کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1185604 1492121 2015 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Sensitive determination of carbendazim in orange juice by electrode modified with hybrid material
ترجمه فارسی عنوان
تعیین حساسیت کربندازیم در آب پرتقال توسط الکترود اصلاح شده با مواد هیبرید
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
چکیده انگلیسی


• Carbon nanotubes physically incorporated in the mesoporous silica matrix.
• Direct electrochemical determination of Carbendazim in orange juice.
• Carbendazim oxidation at lower anodic potential.
• High sensitivity and low limit of detection.
• No susceptibility to interference species, such as citric and ascorbic acids.

This paper describes the application of a glassy carbon electrode modified with a thin film of mesoporous silica/multiwalled carbon nanotubes for voltammetric determination of the fungicide carbendazim (CBZ). The hybrid material, (SiO2/MWCNT), was obtained by a sol–gel process using HF as the catalyst. The amperometric response to CBZ was measured at +0.73 V vs. Ag/AgCl by square wave voltammetry at pH 8.0. SiO2/MWCNT/GCE responded to CBZ in the linear range from 0.2 to 4.0 μmol L−1. The calculated detection limit was 0.056 μmol L−1, obtained using statistical methods. The SiO2/MWCNT/GCE sensor presented as the main characteristics high sensitivity, low detection limit and robustness, allowing CBZ determination in untreated real samples. In addition, this strategy afforded remarkable selectivity for CBZ against ascorbic and citric acid which are the main compounds of the orange juice. The excellent sensitivity and selectivity yielded feasible application for CBZ detection in orange juice sample.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Food Chemistry - Volume 170, 1 March 2015, Pages 360–365
نویسندگان
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