کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10560195 | 969708 | 2005 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Reduction of hexavalent chromium at solid electrodes in acidic media: reaction mechanism and analytical applications
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Reduction of hexavalent chromium at solid electrodes in acidic media: reaction mechanism and analytical applications Reduction of hexavalent chromium at solid electrodes in acidic media: reaction mechanism and analytical applications](/preview/png/10560195.png)
چکیده انگلیسی
The electrochemical detection of hexavalent chromium species was investigated. It was found that Cr(VI) can undergo chemically irreversible reduction in acidic solutions at gold, glassy carbon and boron-doped diamond electrodes. The process was found to be diffusionally controlled at all three electrodes studied. The response obtained at a gold electrode towards the reduction of chromium(VI) produced an electrochemically reversible wave in contrast to those recorded at glassy carbon and boron-doped diamond electrodes. The analytical response of the hexavalent species was studied at gold electrodes in the presence of common environmental interferences: Ni2+, Cu2+, Fe3+, Cr3+ and Triton X-100 (surfactant), with an LoD of 4.3 μM obtained in the presence of 5 mM Cr(III).
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Talanta - Volume 65, Issue 1, 15 January 2005, Pages 74-80
Journal: Talanta - Volume 65, Issue 1, 15 January 2005, Pages 74-80
نویسندگان
Christine M. Welch, Olga Nekrassova, Richard G. Compton,