کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4907865 1426581 2017 32 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Disposable plastic electrode for electrochemical determination of total chromium and hexavalent chromium
ترجمه فارسی عنوان
الکترودهای پلاستیکی یکبار مصرف برای تعیین الکتروشیمیایی کل کروم و کروم شش ظرفیتی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
چکیده انگلیسی
We report a sensitive electrochemical protocol based on an easy-to-produce and disposable plastic electrode for the determination of total chromium (Cr) and Cr(VI). The electrode was fabricated by sputtering a thin layer of gold on a polyethylene terephthalate (PET) substrate. The experimental factors influencing the fabrication and electrochemical analysis as well as potential interferences were investigated. Under optimum conditions, the determination of total Cr was achieved by adsorptive cathodic stripping voltammetry and the linear range was from 5 to 70 μg L− 1 and from 70 to 300 μg L− 1 with a limit of detection of 5 μg L− 1. The analysis of Cr(VI) was performed by amperometry and linearity in the range from 0.5 to 100 μg L− 1 with a limit of detection of 0.5 μg L− 1 was obtained. The applicability to spiked river water and textile samples was demonstrated with satisfying results. The proposed method has been proved to provide more convenient sensor fabrication and much higher sensitivity than other reports based on disposable electrodes. We believe it may provide a promising alternative for routine analysis of total Cr and Cr(VI).
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Electroanalytical Chemistry - Volume 794, 1 June 2017, Pages 148-155
نویسندگان
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