Nanoalumina Modified Carbon Paste Electrode for Sensitive and Rapid Determination of Hypochlorite Ion by Differential Pulse Voltammetry
Publish Year: 1399
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_ANALCH-7-1_008
تاریخ نمایه سازی: 16 بهمن 1401
Abstract:
An anodic stripping differential pulse voltammetric method was proposed for rapid and sensitive determination of hypochlorite ion. A modified electrode was prepared by modification of carbon paste using alumina nanopowder . The method that is rapid, simple and accurate is based on the electrooxidation hypochlorite ion accumulated at the elexctrode urface. Nanoalumina modification increased the oxidation peak current for hypochlorite ion. The effects of different parameters on the electrode response were studied and the optimum condition was established. The response of the sensor was linear in the range ۰.۱-۸۰۰ μg mL-۱ of hypochlorite ion, with a correlation coefficient of ۰.۹۹۹۲ at the optimum condition. The limit of detection was obtained as ۰.۰۲۵ μg mL-۱. The effects of some cations, anions and organic species, which may coexist with hypochlorite ion in real samples, on the current response of hypochlorite, were investigated. The investigated chemical species do not interfere. Hypochorite ion in water and dairy product samples was successfully determined using the proposed electrode.
Keywords:
Hypochlorite determination , Chemically modified carbon paste electrode , Differential pulse voltammetry , Nanoalumina , Water samples , Dairy products
Authors
Maryam Malmir
Faculty of Chemistry, Bu-Ali Sina University, Hamedan, Iran
Abbas Afkhami
Faculty of Chemistry, Bu-Ali Sina University, Hamedan, Iran
Tayyebeh Madrakian
Faculty of Chemistry, Bu-Ali Sina University, Hamedan, Iran
Farzaneh Soltani-Felehgari
Faculty of Chemistry, Bu-Ali Sina University, Hamedan, Iran
Elaheh Madrakian
Faculty of Chemistry, Bu-Ali Sina University, Hamedan, Iran
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