A sensitive method for electrochemical determination of molybdenum (VI) in plant foodstuff samples using Ni0.5Zn0.5Fe2O4 nanocomposite modified carbon paste electrode
In the present study, a new chemically modified carbon paste electrode (CPE) is constructed for rapid, accurate, simple, highly sensitive, and selective determination of Mo (VI) using differential pulse voltammetry. The electrode was prepared using magnetic nickel zinc ferrite nanocomposite (Ni0.5Zn...
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Iranian Chemical Society
2016-07-01
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doaj-3d638a7d569b4f0498589145ffbb397a2021-02-17T13:30:16ZengIranian Chemical SocietyNanochemistry Research2538-42792423-818X2016-07-011224925710.7508/ncr.2016.02.01238535A sensitive method for electrochemical determination of molybdenum (VI) in plant foodstuff samples using Ni0.5Zn0.5Fe2O4 nanocomposite modified carbon paste electrodeAbbas Afkhami0Mahdi Moradi1Atousa Bahiraei2Tayyebeh Madrakian3Faculty of Chemistry, Bu-Ali Sina University, Hamedan, IranFaculty of Chemistry, Bu-Ali Sina University, Hamedan, IranFaculty of Chemistry, Bu-Ali Sina University, Hamedan, IranFaculty of Chemistry, Bu-Ali Sina University, Hamedan, IranIn the present study, a new chemically modified carbon paste electrode (CPE) is constructed for rapid, accurate, simple, highly sensitive, and selective determination of Mo (VI) using differential pulse voltammetry. The electrode was prepared using magnetic nickel zinc ferrite nanocomposite (Ni0.5Zn0.5Fe2O4), as the modifier in CPE (Ni0.5Zn0.5Fe2O4/CPE). Mo (VI) was determined after preconcentration at the surface of the modified electrode at -0.7 V vs. Ag/AgCl. Under the optimal conditions, the linear dynamic range and limit of detection were 0.005-1.00 and 0.003 µgmL-1, respectively. Ten successive measurements of 0.06 and 0.70 µg mL-1 of Mo (VI) ions showed the relative standard deviation of 3.20 and 1.98 %, respectively. The reproducibility and stability of the electrode response were also studied. Investigation of the effects of different cations and anions on the determination of Mo (VI) indicated that the electrode is highly selective. Furthermore, the present method was applied to the determination of Mo (VI) in several plant foodstuff samples with satisfactory results.http://www.nanochemres.org/article_38535_dbebd3920b8b535ed504448d19b56f13.pdfcarbon paste modified electrodedetermination of mo (vi) ionelectrochemical methodfood samplesmagnetic nickel zinc ferritenanocomposite |
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DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Abbas Afkhami Mahdi Moradi Atousa Bahiraei Tayyebeh Madrakian |
spellingShingle |
Abbas Afkhami Mahdi Moradi Atousa Bahiraei Tayyebeh Madrakian A sensitive method for electrochemical determination of molybdenum (VI) in plant foodstuff samples using Ni0.5Zn0.5Fe2O4 nanocomposite modified carbon paste electrode Nanochemistry Research carbon paste modified electrode determination of mo (vi) ion electrochemical method food samples magnetic nickel zinc ferrite nanocomposite |
author_facet |
Abbas Afkhami Mahdi Moradi Atousa Bahiraei Tayyebeh Madrakian |
author_sort |
Abbas Afkhami |
title |
A sensitive method for electrochemical determination of molybdenum (VI) in plant foodstuff samples using Ni0.5Zn0.5Fe2O4 nanocomposite modified carbon paste electrode |
title_short |
A sensitive method for electrochemical determination of molybdenum (VI) in plant foodstuff samples using Ni0.5Zn0.5Fe2O4 nanocomposite modified carbon paste electrode |
title_full |
A sensitive method for electrochemical determination of molybdenum (VI) in plant foodstuff samples using Ni0.5Zn0.5Fe2O4 nanocomposite modified carbon paste electrode |
title_fullStr |
A sensitive method for electrochemical determination of molybdenum (VI) in plant foodstuff samples using Ni0.5Zn0.5Fe2O4 nanocomposite modified carbon paste electrode |
title_full_unstemmed |
A sensitive method for electrochemical determination of molybdenum (VI) in plant foodstuff samples using Ni0.5Zn0.5Fe2O4 nanocomposite modified carbon paste electrode |
title_sort |
sensitive method for electrochemical determination of molybdenum (vi) in plant foodstuff samples using ni0.5zn0.5fe2o4 nanocomposite modified carbon paste electrode |
publisher |
Iranian Chemical Society |
series |
Nanochemistry Research |
issn |
2538-4279 2423-818X |
publishDate |
2016-07-01 |
description |
In the present study, a new chemically modified carbon paste electrode (CPE) is constructed for rapid, accurate, simple, highly sensitive, and selective determination of Mo (VI) using differential pulse voltammetry. The electrode was prepared using magnetic nickel zinc ferrite nanocomposite (Ni0.5Zn0.5Fe2O4), as the modifier in CPE (Ni0.5Zn0.5Fe2O4/CPE). Mo (VI) was determined after preconcentration at the surface of the modified electrode at -0.7 V vs. Ag/AgCl. Under the optimal conditions, the linear dynamic range and limit of detection were 0.005-1.00 and 0.003 µgmL-1, respectively. Ten successive measurements of 0.06 and 0.70 µg mL-1 of Mo (VI) ions showed the relative standard deviation of 3.20 and 1.98 %, respectively. The reproducibility and stability of the electrode response were also studied. Investigation of the effects of different cations and anions on the determination of Mo (VI) indicated that the electrode is highly selective. Furthermore, the present method was applied to the determination of Mo (VI) in several plant foodstuff samples with satisfactory results. |
topic |
carbon paste modified electrode determination of mo (vi) ion electrochemical method food samples magnetic nickel zinc ferrite nanocomposite |
url |
http://www.nanochemres.org/article_38535_dbebd3920b8b535ed504448d19b56f13.pdf |
work_keys_str_mv |
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