Ali A. Ensafi

Summary

Affiliation: Isfahan University of Technology
Location: Isfahan, Iran
URL: http://ensafi.iut.ac.ir

Publications

  1. ncbi request reprint On-line preconcentration system for lead(II) determination in waste water by atomic absorption spectrometry using active carbon loaded with Pyrogallol Red
    Ali A Ensafi
    College of Chemistry, Isfahan University of Technology, Isfahan 84156, Iran
    Anal Sci 19:953-6. 2003
  2. doi request reprint Combined hollow fiber-based liquid-liquid-liquid microextraction and in-situ differential pulse voltammetry to improve selectivity, sensitivity, and interference elimination in electrochemical analysis
    Mohammad Saraji
    Department of Chemistry, Isfahan University of Technology, Isfahan 84156 83111, Iran
    Talanta 82:1588-93. 2010
  3. ncbi request reprint On-line separation and preconcentration of lead(II) by solid-phase extraction using activated carbon loaded with xylenol orange and its determination by flame atomic absorption spectrometry
    Ali A Ensafi
    College of Chemistry, Isfahan University of Technology, Isfahan 84156 83111, Iran
    J Hazard Mater 150:554-9. 2008
  4. doi request reprint Differential pulse cathodic stripping adsorption voltammetric determination of trace amounts of lead using factorial design for optimization
    Ali A Ensafi
    Department of Analytical Chemistry, College of Chemistry, Isfahan University of Technology, Isfahan, Iran
    Talanta 59:727-33. 2003
  5. doi request reprint Electrochemical study of quinone redox cycling: A novel application of DNA-based biosensors for monitoring biochemical reactions
    Ali A Ensafi
    Department of Analytical Chemistry, College of Chemistry, Isfahan University of Technology, Isfahan 84156 83111, Iran Electronic address
    Bioelectrochemistry 111:15-22. 2016
  6. doi request reprint Simultaneous kinetic determination of thiocyanate and sulfide using eigenvalue ranking and correlation ranking in principal component-wavelet neural network
    Ali A Ensafi
    College of Chemistry, Isfahan University of Technology, Isfahan 84156 83111, Iran
    Talanta 71:2021-8. 2007
  7. ncbi request reprint Determination of tryptophan and histidine by adsorptive cathodic stripping voltammetry using H-point standard addition method
    Ali A Ensafi
    College of Chemistry, Isfahan University of Technology, Isfahan 84156 83111, Iran
    Anal Chim Acta 580:236-43. 2006
  8. ncbi request reprint Flow injection determination of formaldehyde by its catalytic effect on the oxidation of sulfonazo III by bromate with spectrophotometric detection
    Ali Asghar Ensafi
    College of Chemistry, Isfahan University of Technology, Isfahan 84156, Iran
    Anal Sci 21:545-8. 2005
  9. ncbi request reprint Simultaneous spectrophotometric determination of nitrite and nitrate by flow injection analysis
    Ali Asghar Ensafi
    College of Chemistry, Isfahan University of Technology, Isfahan, 84156, Iran
    Anal Sci 20:1749-53. 2004
  10. ncbi request reprint Sequential determination of iron(II) and iron(III) in pharmaceutical by flow-injection analysis with spectrophotometric detection
    Ali A Ensafi
    College of Chemistry, Isfahan University of Technology, Isfahan 84154, Iran
    Anal Sci 20:645-50. 2004

Collaborators

Detail Information

Publications66

  1. ncbi request reprint On-line preconcentration system for lead(II) determination in waste water by atomic absorption spectrometry using active carbon loaded with Pyrogallol Red
    Ali A Ensafi
    College of Chemistry, Isfahan University of Technology, Isfahan 84156, Iran
    Anal Sci 19:953-6. 2003
    ..Under the optimum conditions, the lead ions in aqueous samples were concentrated about 100 fold by the column. The detection limit was 0.001 microg ml(-1). The recovery percent of spliced lead(II) was in the range of 98%-103%...
  2. doi request reprint Combined hollow fiber-based liquid-liquid-liquid microextraction and in-situ differential pulse voltammetry to improve selectivity, sensitivity, and interference elimination in electrochemical analysis
    Mohammad Saraji
    Department of Chemistry, Isfahan University of Technology, Isfahan 84156 83111, Iran
    Talanta 82:1588-93. 2010
    ..988) and the limit of detection (LOD) was found to be 0.8 nmol L(-1). Finally, the applicability of the proposed method was evaluated by extraction and determination of desipramine in plasma and urine samples without any dilutions...
  3. ncbi request reprint On-line separation and preconcentration of lead(II) by solid-phase extraction using activated carbon loaded with xylenol orange and its determination by flame atomic absorption spectrometry
    Ali A Ensafi
    College of Chemistry, Isfahan University of Technology, Isfahan 84156 83111, Iran
    J Hazard Mater 150:554-9. 2008
    ..The recovery of lead(II) from river water, waste water, tap water, and in the following reference materials: SRM 2711 Montana soil and GBW-07605 tea were obtained in the range of 97-104% by the proposed method...
  4. doi request reprint Differential pulse cathodic stripping adsorption voltammetric determination of trace amounts of lead using factorial design for optimization
    Ali A Ensafi
    Department of Analytical Chemistry, College of Chemistry, Isfahan University of Technology, Isfahan, Iran
    Talanta 59:727-33. 2003
    ..Under optimum conditions, lead(II) determined in the range of 0.1-30.0 ng ml(-1) with a limit of detection of 0.06 ng ml(-1). The method is successfully applied to determination of lead(II) in water sample...
  5. doi request reprint Electrochemical study of quinone redox cycling: A novel application of DNA-based biosensors for monitoring biochemical reactions
    Ali A Ensafi
    Department of Analytical Chemistry, College of Chemistry, Isfahan University of Technology, Isfahan 84156 83111, Iran Electronic address
    Bioelectrochemistry 111:15-22. 2016
    ..These techniques may be recommended for monitoring DNA damages and investigating the mechanisms involved in the production of redox cycling compounds. ..
  6. doi request reprint Simultaneous kinetic determination of thiocyanate and sulfide using eigenvalue ranking and correlation ranking in principal component-wavelet neural network
    Ali A Ensafi
    College of Chemistry, Isfahan University of Technology, Isfahan 84156 83111, Iran
    Talanta 71:2021-8. 2007
    ..The proposed method was applied for the determination of sulfide and thiocyanate in real samples such as tap, waste and river waters with satisfactory results...
  7. ncbi request reprint Determination of tryptophan and histidine by adsorptive cathodic stripping voltammetry using H-point standard addition method
    Ali A Ensafi
    College of Chemistry, Isfahan University of Technology, Isfahan 84156 83111, Iran
    Anal Chim Acta 580:236-43. 2006
    ..The method was successfully applied to the determination of tryptophan and histidine in synthetic and real samples...
  8. ncbi request reprint Flow injection determination of formaldehyde by its catalytic effect on the oxidation of sulfonazo III by bromate with spectrophotometric detection
    Ali Asghar Ensafi
    College of Chemistry, Isfahan University of Technology, Isfahan 84156, Iran
    Anal Sci 21:545-8. 2005
    ..20, 0.50 and 1.00 microg ml(-1) formaldehyde were 1.3, 0.8 and 0.7%, respectively. The method was applied to the determination of formaldehyde in river water, shampoo and melamine-formaldehyde resin...
  9. ncbi request reprint Simultaneous spectrophotometric determination of nitrite and nitrate by flow injection analysis
    Ali Asghar Ensafi
    College of Chemistry, Isfahan University of Technology, Isfahan, 84156, Iran
    Anal Sci 20:1749-53. 2004
    ..The influences of potential interfering cations and anions for nitrite and nitrate determination were studied. The method is successfully applied for food and water samples. Up to ten samples can be analyzed per hour...
  10. ncbi request reprint Sequential determination of iron(II) and iron(III) in pharmaceutical by flow-injection analysis with spectrophotometric detection
    Ali A Ensafi
    College of Chemistry, Isfahan University of Technology, Isfahan 84154, Iran
    Anal Sci 20:645-50. 2004
    ..The experimental limits of detection were 0.03 and 0.04 microg ml(-1) for iron(II) and iron(III), respectively. The proposed method was successfully applied to the speciation of iron in pharmaceutical products...
  11. doi request reprint Graphene/nano-porous silicon and graphene/bimetallic silicon nanostructures (Pt-M, M: Pd, Ru, Rh), efficient electrocatalysts for the hydrogen evolution reaction
    Ali A Ensafi
    Department of Analytical Chemistry, Faculty of Chemistry, Isfahan University of Technology, Isfahan 84156 83111, Iran
    Phys Chem Chem Phys 17:23770-82. 2015
    ..The results showed that there was a higher electrocatalytic activity for Pt-M/PSiF-eRGO/GCE when compared with Pt-M/PSiF-GCE. ..
  12. ncbi request reprint Differential pulse adsorption stripping voltammetric determination of copper(II) with 2-mercaptobenzimidazol at a hanging mercury-drop electrode
    A A Ensafi
    College of Chemistry, Isfahan University of Technology, Isfahan, 84154, Iran
    Anal Sci 17:609-12. 2001
    ..0, 20.0 and 70.0 ng/ml copper(II), relative standard deviations of 4.2, 3.5 and 2.8%, respectively, were obtained. The developed method was applied to the determination of copper in commercial salts and aluminium alloys...
  13. doi request reprint A simple and rapid label-free fluorimetric biosensor for protamine detection based on glutathione-capped CdTe quantum dots aggregation
    Ali A Ensafi
    Department of Chemistry, Isfahan University of Technology, Isfahan 84156 83111, Iran Electronic address
    Biosens Bioelectron 71:243-8. 2015
    ..The results showed that the biosensor is highly selective and sensitive for the detection of protamine. The optical biosensor was successfully used for the determination of protamine in real samples...
  14. doi request reprint Experimental and theoretical investigation effect of flavonols antioxidants on DNA damage
    Ali A Ensafi
    Department of Analytical Chemistry, Faculty of Chemistry, Isfahan University of Technology, Isfahan 84156 83111, Iran Electronic address
    Anal Chim Acta 887:82-91. 2015
    ..Finally molecular dynamic (MD) simulation was performed on the structure of DNA in a water box to study any interaction between the antioxidant, AO and DNA...
  15. doi request reprint A novel diagnostic biosensor for distinguishing immunoglobulin mutated and unmutated types of chronic lymphocytic leukemia
    Ali A Ensafi
    Department of Analytical Chemistry, Faculty of Chemistry, Isfahan University of Technology, Isfahan 84156 83111, Iran Electronic address
    Biosens Bioelectron 77:409-15. 2016
    ....
  16. doi request reprint A simple and sensitive fluorimetric aptasensor for the ultrasensitive detection of arsenic(III) based on cysteamine stabilized CdTe/ZnS quantum dots aggregation
    Ali A Ensafi
    Department of Chemistry, Isfahan University of Technology, Isfahan 84156 83111, Iran Electronic address
    Biosens Bioelectron 77:499-504. 2016
    ..The present assay was successfully applied for the determination of As(III) in several water samples...
  17. doi request reprint Cobalt ferrite nanoparticles decorated on exfoliated graphene oxide, application for amperometric determination of NADH and H2O2
    Ali A Ensafi
    Department of Chemistry, Isfahan University of Technology, Isfahan 84156 83111, Iran Electronic address
    Mater Sci Eng C Mater Biol Appl 60:276-84. 2016
    ..The new electrochemical sensor was successfully applied for the determination of NADH and H2O2 in real samples with satisfactory results...
  18. doi request reprint Impedimetric DNA-biosensor for the study of dopamine induces DNA damage and investigation of inhibitory and repair effects of some antioxidants
    Ali A Ensafi
    Center of Excellence in Sensor and Green Chemistry, Department of Chemistry, Isfahan University of Technology, Isfahan 84156 83111, Iran Electronic address
    Bioelectrochemistry 104:71-8. 2015
    ..In addition, the ability of dopamine-Cu(II) was greater than dopamine-Fe(III). Moreover, some antioxidant such as glutathione and ascorbic acid can overcome and/or minimize the influence of these damaging interactions...
  19. doi request reprint Synthesis of new copper nanoparticle-decorated anchored type ligands: applications as non-enzymatic electrochemical sensors for hydrogen peroxide
    Ali A Ensafi
    Department of Chemistry, Isfahan University of Technology, Isfahan 84156 83111, Iran Electronic address
    Mater Sci Eng C Mater Biol Appl 47:290-7. 2015
    ..As further verification of the selected sensor, H2O2 contained in milk sample was analyzed and the obtained results were comparable with the ones from classical control titration method...
  20. doi request reprint Characterization of carbon nanotubes decorated with NiFe2O4 magnetic nanoparticles as a novel electrochemical sensor: application for highly selective determination of sotalol using voltammetry
    Ali A Ensafi
    Department of Chemistry, Isfahan University of Technology, Isfahan 84156 83111, Iran
    Mater Sci Eng C Mater Biol Appl 33:202-8. 2013
    ..09 μmol L(-1). The modified electrode was used as a novel electrochemical sensor for the determination of sotalol in real samples such as pharmaceutical, patient and safe human urine...
  21. doi request reprint Application of ionic liquid-TiO2 nanoparticle modified carbon paste electrode for the voltammetric determination of benserazide in biological samples
    Ali A Ensafi
    Department of Chemistry, Isfahan University of Technology, Isfahan 84156 83111, Iran Electronic address
    Mater Sci Eng C Mater Biol Appl 33:831-5. 2013
    ..1%. Finally, the proposed method was successfully applied to the determination of benserazide in real samples such as blood serum and urine...
  22. doi request reprint Determination of atropine sulfate using a novel sensitive DNA-biosensor based on its interaction on a modified pencil graphite electrode
    Ali A Ensafi
    Department of Chemistry, Isfahan University of Technology, Isfahan 84156 83111, Iran Electronic address
    Talanta 131:149-55. 2015
    ..0 nmol L(-1). The biosensor shows a good selectivity for the determination of atropine sulfate. Finally, the applicability of the biosensor is evaluated by measuring atropine sulfate in real samples with good accuracy...
  23. doi request reprint Highly selective differential pulse voltammetric determination of phenazopyridine using MgCr2O4 nanoparticles decorated MWCNTs-modified glassy carbon electrode
    Ali A Ensafi
    Department of Chemistry, Isfahan University of Technology, Isfahan, 84156 83111, Iran Electronic address
    Colloids Surf B Biointerfaces 111:270-6. 2013
    ..05 to 7.5 μmol L(-1). The detection limit was 0.025 μmol L(-1). The applicability of the method was confirmed with satisfactory results obtained through the assay of phenazopyridine in human plasma, urine samples, and pharmaceuticals...
  24. doi request reprint Voltammetric behavior of dopamine at a glassy carbon electrode modified with NiFe(2)O(4) magnetic nanoparticles decorated with multiwall carbon nanotubes
    Ali A Ensafi
    Department of Chemistry, Isfahan University of Technology, Isfahan 84156 83111, Iran Electronic address
    Mater Sci Eng C Mater Biol Appl 39:78-85. 2014
    ..The proposed electrochemical sensor has appropriate properties such as high selectivity, low detection limit and wide linear dynamic range when compared with that of the previous reported papers for dopamine detection...
  25. doi request reprint Impedimetric DNA-biosensor for the study of anti-cancer action of mitomycin C: comparison between acid and electroreductive activation
    Ali A Ensafi
    Department of Chemistry, Isfahan University of Technology, Isfahan 84156 83111, Iran Electronic address
    Biosens Bioelectron 59:282-8. 2014
    ..Impedance spectroscopy was used for the first time as a novel technique for detecting DNA-drug adducts. ..
  26. doi request reprint Assessment of genotoxicity of catecholics using impedimetric DNA-biosensor
    Ali A Ensafi
    Department of Chemistry, Isfahan University of Technology, Isfahan 84156 83111, Iran Electronic address
    Biosens Bioelectron 53:43-50. 2014
    ..Such direct monitoring of the DNA damage holds great promise for designing new biosensors with modification of the biosensor with different damaging agents...
  27. doi request reprint A combined liquid three-phase micro-extraction and differential pulse voltammetric method for preconcentration and detection of ultra-trace amounts of buprenorphine using a modified pencil electrode
    Ali A Ensafi
    Department of Chemistry, Isfahan University of Technology, Isfahan 84156 83111, Iran Electronic address
    Talanta 116:1113-20. 2013
    ..The results indicate that the proposed method is highly selective and sensitive for buprenorphine detection in real samples such as human urine and plasma of both drug-addict and non-addict human subjects...
  28. doi request reprint Biosensor based on ds-DNA decorated chitosan modified multiwall carbon nanotubes for voltammetric biodetection of herbicide amitrole
    Ali A Ensafi
    Department of Chemistry, Isfahan University of Technology, Isfahan 84156 83111, Iran
    Colloids Surf B Biointerfaces 109:45-51. 2013
    ..017 ng mL(-1). The sensor showed a good selectivity and precision for the determination of amitrole. Finally, applicability of the biosensor was evaluated by measuring the analyte in soil and water samples with good selectivity...
  29. ncbi request reprint Polytetrafluorethylene film-based liquid-three phase micro extraction coupled with differential pulse voltammetry for the determination of atorvastatin calcium
    Ali A Ensafi
    Department of Chemistry, Isfahan University of Technology, Isfahan, Iran
    Anal Sci 29:303-9. 2013
    ..0 µmol L(-1) of ATC. The detection limit was found to be 8.1 pmol L(-1) ATC. Finally, the proposed method was used as a new combination method for the determination of atorvastatin calcium in real samples, such as human urine and plasma...
  30. doi request reprint A sensitive and selective voltammetric sensor based on multiwall carbon nanotubes decorated with MgCr₂O₄ for the determination of azithromycin
    Ali A Ensafi
    Department of Chemistry, Isfahan University of Technology, Isfahan 84156 83111, Iran
    Colloids Surf B Biointerfaces 103:468-74. 2013
    ..0. The influence of potential interfering compounds on the selectivity was studied. Finally, the modified electrode showed good sensitivity, selectivity and stability for the determination of azithromycin in real samples...
  31. doi request reprint DNA-based biosensor for comparative study of catalytic effect of transition metals on autoxidation of sulfite
    Ali A Ensafi
    Department of Chemistry, Isfahan University of Technology, Isfahan 84156 83111, Iran
    Anal Chem 85:991-7. 2013
    ....
  32. doi request reprint Voltammetric determination of glutathione in haemolysed erythrocyte and tablet samples using modified-multiwall carbon nanotubes paste electrode
    Ali A Ensafi
    Department of Chemistry, Isfahan University of Technology, Iran
    Drug Test Anal 4:978-85. 2012
    ..0 × 10(-8) mol L(-1). The method was also successfully employed as a selective, simple, and precise method for the determination of glutathione in haemolysed erythrocyte, tablet, and urine samples...
  33. doi request reprint Different interaction of codeine and morphine with DNA: a concept for simultaneous determination
    Ali A Ensafi
    Department of Chemistry, Isfahan University of Technology, Isfahan 84156 83111, Iran
    Biosens Bioelectron 41:627-33. 2013
    ..041 and 0.043 μg mL(-1) were obtained for codeine and morphine, respectively. The biosensor was applied to validate its capability for the analysis of codeine and morphine in blood serum, urine samples and pharmaceutical formulations...
  34. doi request reprint Determination of 6-mercaptopurine in the presence of uric acid using modified multiwall carbon nanotubes-TiO2 as a voltammetric sensor
    Ali A Ensafi
    Department of Chemistry, Isfahan University of Technology, Iran
    Drug Test Anal 4:970-7. 2012
    ..7%, and 1.2%, respectively. The kinetic parameters of the system were determined using electrochemical approaches. The method was successfully applied for the determination of 6-MP in drug sample, and 6-MP plus UA in urine samples...
  35. doi request reprint A novel enzyme-free amperometric sensor for hydrogen peroxide based on Nafion/exfoliated graphene oxide-Co3O4 nanocomposite
    Ali A Ensafi
    Department of Chemistry, Isfahan University of Technology, Isfahan 84156 83111, Iran
    Talanta 103:322-9. 2013
    ....
  36. doi request reprint Multiwall carbon nanotubes decorated with NiFe2O4 magnetic nanoparticles, a new catalyst for voltammetric determination of cefixime
    Ali A Ensafi
    Department of Chemistry, Isfahan University of Technology, Isfahan 84156 83111, Iran
    Colloids Surf B Biointerfaces 102:687-93. 2013
    ..1-100 and 100-600 μmol L(-1) cefixime. The detection limit was found to be 0.02 μmol L(-1) cefixime. Finally, the modified electrode showed good sensitivity, selectivity and stability for the determination of cefixime in real samples...
  37. doi request reprint In-situ differential pulse anodic stripping voltammetry combined with hollow fiber-based liquid-three phase micro extraction for determination of mercury using Au-nanoparticles sol-gel modified Pt-wire
    Ali A Ensafi
    Department of Chemistry, Isfahan University of Technology, Isfahan 84156 83111, Iran
    Talanta 99:335-41. 2012
    ..9880) and a limit of detection of 0.06 nmol L(-1). Finally, the applicability of the proposed method was evaluated by extraction and determination of mercury in real samples such as fish and rice...
  38. ncbi request reprint Characterization of MgFe2O4 nanoparticles as a novel electrochemical sensor: application for the voltammetric determination of ciprofloxacin
    Ali A Ensafi
    Department of Chemistry, Isfahan University of Technology, Isfahan, Iran
    Anal Sci 28:705-10. 2012
    ..1%. The repeatability of the sensor was investigated by preparing nine similar electrodes. The proposed sensor is a selective and fast tool for the determination of ciprofloxacin in tablet, plasma, and urine samples...
  39. doi request reprint A novel sensitive DNA-biosensor for detection of a carcinogen, Sudan II, using electrochemically treated pencil graphite electrode by voltammetric methods
    Ali A Ensafi
    Department of Chemistry, Isfahan University of Technology, Isfahan 84156 83111, Iran
    Talanta 88:244-51. 2012
    ..0015-0.30 μg mL(-1), with a detection limit of 0.00007 μg mL(-1) Sudan II. Both ds-DNA-modified PGE and PPGE were applied to analyze Sudan II in real samples...
  40. doi request reprint DNA-functionalized biosensor for riboflavin based electrochemical interaction on pretreated pencil graphite electrode
    Ali A Ensafi
    Department of Chemistry, Isfahan University of Technology, Isfahan 84156 83111, Iran
    Biosens Bioelectron 31:376-81. 2012
    ..003-0.88 μg mL(-1) with differential pulse adsorptive stripping voltammetric signal and with a detection limit of 0.076 ng mL(-1). Both determination methods were fully validated and applied for the analysis of riboflavin...
  41. doi request reprint Voltammetric determination of isoproterenol using multiwall carbon nanotubes-ionic liquid paste electrode
    Ali A Ensafi
    Department of Chemistry, Isfahan University of Technology, Isfahan 84156 83111, Iran
    Drug Test Anal 3:325-30. 2011
    ..0 to 520 µmol L⁻¹ using differential pulse voltammetry. The detection limit was 0.85 µmol L⁻¹. The proposed method was successfully applied to the determination of ISPT in both ampoules and urine samples...
  42. ncbi request reprint Determination of losartan and triamterene in pharmaceutical compounds and urine using cathodic adsorptive stripping voltammetry
    Ali Asghar Ensafi
    Department of Chemistry, Isfahan University of Technology, Isfahan 84156 83111, Iran
    Anal Sci 24:1449-54. 2008
    ..6 mV pH(-1) in the pH range of 2.0 - 6.0. The stoichiometry and complex formation constant (beta) for losartan-Cu(II), number of transfer electrons (n), transfer coefficients (alpha) and number of proton transfers were also estimated...
  43. ncbi request reprint Spectrofluorimetric flow injection determination of trace amounts of periodate
    A A Ensafi
    College of Chemistry, Isfahan University of Technology, Iran
    Spectrochim Acta A Mol Biomol Spectrosc 57:1739-43. 2001
    ..500 and 5.00 microg ml(-1) was 1.3 and 1.1%, respectively. Periodate can be determined in the presence of iodate and bromate. The proposed method was used to determination of periodate in water samples...
  44. ncbi request reprint Kinetic spectrophotometric method for the determination of oxalic acid by its catalytic effect on the oxidation of safranine by dichromate
    A A Ensafi
    College of Chemistry, Isfahan University of Technology, Iran
    Spectrochim Acta A Mol Biomol Spectrosc 57:1833-8. 2001
    ..The purposed method is simple, sensitive, selective and inexpensive. The applicability of the proposed method was determined by the determination of oxalic acid in spinach and wastewater samples with satisfactory results...
  45. ncbi request reprint Kinetic-spectrophotometric determination of palladium in hydrogenation catalyst by its catalytic effect on the oxidation of pyrogallol red by hydrogen peroxide
    Ali A Ensafi
    College of Chemistry, Isfahan University of Technology, Iran
    Spectrochim Acta A Mol Biomol Spectrosc 58:1567-72. 2002
    ..60 microg ml(-1) Pd(II) was 1.5 and 0.9%, respectively. The influence of more than 40 potential interfering ions was studied for the selectivity. The proposed method was used for the determination of palladium in catalytic material...
  46. ncbi request reprint Kinetic-spectrophotometric determination of ascorbic acid by inhibition of the hydrochloric acid-bromate reaction
    Ali A Ensafi
    College of Chemistry, Isfahan University of Technology, Iran
    Spectrochim Acta A Mol Biomol Spectrosc 58:2589-94. 2002
    ..8 and 1.7%, respectively. The influence of potential interfering substance was studied. The method was successfully applied for the determination of ascorbic acid in pharmaceuticals...
  47. ncbi request reprint Flow-injection spectrophotometric determination of periodate and iodate by their reaction with pyrogallol red in acidic media
    Ali A Ensafi
    College of Chemistry, Isfahan University of Technology, Isfahan 84156, Iran
    Spectrochim Acta A Mol Biomol Spectrosc 58:2835-9. 2002
    ..The influence of potential interfering ions in the determination of the anions was tested. The relative standard deviations for 4.20 and 5.73 microM periodate and iodate were 1.8 and 2.2%, respectively...
  48. ncbi request reprint Sequential flow injection determination of iodate and periodate with spectrophotometric detection
    Ali A Ensafi
    College of Chemistry, Isfahan University of Technology, Isfahan 84156, Iran
    Spectrochim Acta A Mol Biomol Spectrosc 59:2897-903. 2003
    ..The 3 sigma limit of detection was 0.030 and 0.050 microg/ml for periodate and iodate, respectively. The proposed method has been applied for the sequential determinations of periodate and iodate in water samples...
  49. ncbi request reprint Spectrophotometric reaction rate method for determination of barbituric acid by inhibition of the hydrochloric acid-bromate reaction
    Ali A Ensafi
    College of Chemistry, Isfahan University of Technology, Isfahan 84156, Iran
    Spectrochim Acta A Mol Biomol Spectrosc 59:3159-64. 2003
    ..The relative standard deviation of seven replication determination of 5.6x10(-6) M barbituric acid was 1.8%. The influence of potential interfering substance was studied...
  50. ncbi request reprint Determination of trace amount of carbon disulfide in water by the spectrophotometric reaction-rate method
    Ali A Ensafi
    College of Chemistry, Isfahan University of Technology, Isfahan, 84156, Iran
    Anal Sci 19:1679-81. 2003
    ..870 microg/ml CS2. The limit of detection is 0.013 microg/ml CS2. A carbon-active column was used for sample solution clean up. The proposed method was successfully applied to the determination of trace carbon disulfide in natural water...
  51. ncbi request reprint Highly selective spectrophotometric flow-injection determination of trace amounts of bromide by catalytic effect on the oxidation of m-cresolsulfonephthalein by periodate
    Ali A Ensafi
    College of Chemistry, Isfahan University of Technology, Isfahan 84156, Iran
    Spectrochim Acta A Mol Biomol Spectrosc 60:2053-7. 2004
    ..1%. The influence of potential interfering ions on the selectivity was studied. The method successes to measure bromide in the presence of other halide ions. The method was used to measure bromide in river water and tap water...
  52. ncbi request reprint On-line solid phase selective separation and preconcentration of Cd(II) by solid-phase extraction using carbon active modified with methyl thymol blue
    Ali A Ensafi
    College of Chemistry, Isfahan University of Technology, Isfahan 84156 83111, Iran
    J Hazard Mater 148:319-25. 2007
    ..4) with satisfactory results. The accuracy was assessed through recovery experiments...
  53. doi request reprint Novel and selective potentiometric membrane sensor for amiloride determination in pharmaceutical compounds and urine
    Ali A Ensafi
    College of Chemistry, Isfahan University of Technology, Isfahan 84156 83111, Iran
    J Pharm Biomed Anal 47:802-6. 2008
    ..The sensor showing a fast response time of 6s and was used over a period of 2 months with a good reproducibility. The sensor was successfully applied to determination of amiloride in pharmaceutical samples with satisfactory results...
  54. doi request reprint Determination of glutathione in hemolysed erythrocyte by flow injection analysis with chemiluminescence detection
    A A Ensafi
    Department of Chemistry, Isfahan University of Technology, Isfahan 84156 83111, Iran
    J Pharm Biomed Anal 48:140-4. 2008
    ..The proposed method was applied successfully for the determination of glutathione in real samples such as erythrocyte hemolysed in normal subjects and diabetes...
  55. doi request reprint Highly sensitive voltammetric sensor based on catechol-derivative-multiwall carbon nanotubes for the catalytic determination of captopril in patient human urine samples
    A A Ensafi
    Department of Chemistry, Isfahan University of Technology, Isfahan, Iran
    Colloids Surf B Biointerfaces 87:480-8. 2011
    ..The RSD% for 0.5 and 10.0 μmol L(-1) captopril were 2.1% and 1.6%, respectively. The proposed sensor was successfully applied for the determination of captopril in human patient urine and tablet samples...
  56. doi request reprint Determination of ultra trace amount of enrofloxacin by adsorptive cathodic stripping voltammetry using copper(II) as an intermediate
    Ali A Ensaifi
    Department of Chemistry, Isfahan University of Technology, Isfahan 84156 83111, Iran
    Talanta 78:942-8. 2009
    ..33 nmol L(-1). The influence of potential interfering substances on the determination of ENRO was examined. The method was successfully applied to determination of ENRO in plasma and pharmaceutical samples...
  57. doi request reprint Non-extraction flow injection determination of cationic surfactants using eriochrome black-T
    Ali A Ensafi
    Department of Chemistry, Isfahan University of Technology, Isfahan 84156 83111, Iran
    Spectrochim Acta A Mol Biomol Spectrosc 73:794-8. 2009
    ..The proposed method is simple and rapid, using no toxic organic solvents. It was applied to the determination of trace CS in industrial wastewater with satisfactory results...
  58. doi request reprint Simultaneous chemiluminescence determination of promazine and fluphenazine using support vector regression
    Ali A Ensafi
    Department of Chemistry, Isfahan University of Technology, Isfahan 84156 83111, Iran
    Talanta 79:534-8. 2009
    ..The proposed method was used for simultaneous determination of both compounds in synthetic mixtures and in spiked human plasma...
  59. doi request reprint Highly selective optical-sensing film for lead(II) determination in water samples
    Ali A Ensafi
    Department of Chemistry, Isfahan Un iversity of Technology, Isfahan 84156 83111, Iran
    J Hazard Mater 172:1069-75. 2009
    ..However, it is for one time use only as the reaction of Pb(II) with 4-hydroxy salophen is irreversible. The optode was successfully used for measuring Pb(II) ions in different water samples and in SRM sample...
  60. doi request reprint Simultaneous chemiluminescence determination of thebaine and noscapine using support vector machine regression
    Ali A Ensafi
    Department of Chemistry, Isfahan University of Technology, Isfahan 84156 83111, Iran
    Spectrochim Acta A Mol Biomol Spectrosc 75:867-71. 2010
    ..08 and 0.1 micromo lL(-1) for noscapine and thebaine, respectively. The proposed method was utilized for the simultaneous determination of the compounds in pharmaceutical formulations and plasma samples with satisfactory results...
  61. doi request reprint Simultaneous determination of ascorbic acid, epinephrine, and uric acid by differential pulse voltammetry using poly(p-xylenolsulfonephthalein) modified glassy carbon electrode
    Ali A Ensafi
    Department of Chemistry, Isfahan University of Technology, Isfahan 84156 83111, Iran
    Colloids Surf B Biointerfaces 79:480-7. 2010
    ..06 x 10(3) mol(-1) Ls(-1), respectively. The present method was applied to the determination of EP in pharmaceutical and urine samples, AA in commercially available vitamin C tablet, and EP plus UA in urine samples...
  62. ncbi request reprint Simultaneous voltammetric determination of enrofloxacin and ciprofloxacin in urine and plasma using multiwall carbon nanotubes modified glassy carbon electrode by least-squares support vector machines
    Ali A Ensafi
    Department of Chemistry, Isfahan University of Technology, Isfahan 84156 83111, Iran
    Anal Sci 26:803-8. 2010
    ..The detection limits for ENRO and CIPRO were 0.5 and 0.9 micromol L(-1), respectively. The proposed method was applied to simultaneously determine both compounds in human urine, plasma and in pharmaceutical samples...
  63. doi request reprint p-Aminophenol-multiwall carbon nanotubes-TiO2 electrode as a sensor for simultaneous determination of penicillamine and uric acid
    Ali A Ensafi
    Department of Chemistry, Isfahan University of Technology, Isfahan 84156 83111, Iran
    Colloids Surf B Biointerfaces 81:42-9. 2010
    ..1% for 15.0 and 30.0 micromol L(-1) UA, respectively. Finally, the sensor was examined as a selective, simple, and precise new electrochemical sensor for the determination of PA in real samples in the presence of UA in drugs and urine...
  64. doi request reprint Determination of isoproterenol and uric acid by voltammetric method using carbon nanotubes paste electrode and p-chloranil
    Ali A Ensafi
    Department of Chemistry, Isfahan University of Technology, Isfahan, Iran
    Colloids Surf B Biointerfaces 84:148-54. 2011
    ..The proposed method was successfully applied to the determination of isoproterenol in both ampoule and urine samples...
  65. ncbi request reprint Flow injection catalytic determination of ruthenium with spectrophotometric detection
    A A Ensafi
    College of Chemistry, Isfahan University of Technology, Iran
    Spectrochim Acta A Mol Biomol Spectrosc 56:1583-8. 2000
    ..1% and with a limit of detection of 0.70 ng ml(-1). The influence of reagent and manifold variables were studied and optimized. The method was tested for the determination of ruthenium(III) in some synthetic mixtures...
  66. ncbi request reprint A voltammetric sensor for the simultaneous determination of L-cysteine and tryptophan using a p-aminophenol-multiwall carbon nanotube paste electrode
    Ali A Ensafi
    Department of Chemistry, Isfahan University of Technology, Isfahan, Iran
    Anal Sci 27:409. 2011
    ..3 and 5.7 µmol L(-1), respectively. The proposed method is also used for the determination of L-cysteine and tryptophan in urine, river water, blood plasma, and serum samples using standard addition methods...