کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10269279 | 459826 | 2005 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Electrochemical determination of bromide at a multiwall carbon nanotubes-chitosan modified electrode
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Electrochemical determination of bromide at a multiwall carbon nanotubes-chitosan modified electrode Electrochemical determination of bromide at a multiwall carbon nanotubes-chitosan modified electrode](/preview/png/10269279.png)
چکیده انگلیسی
A multiwall carbon nanotubes (MWNTs)-chitosan modified glassy carbon electrode (GCE) exhibits attractive ability for highly sensitive cathodic stripping voltammetric measurements of bromide (Brâ). In pH 1.8 H2SO4 solution, a substantial increase in the stripping peak current of Brâ (compared to bare GCE and chitosan modified GCE) is observed using MWNTs-chitosan modified electrode. Operational parameters were optimized and the electrochemical behaviors of Brâ were studied by different electrochemical methods. The kinetics parameters were measured, the number of electron transfer (n) was 1 and the transfer coefficient (α) is 0.17. A wide linear calibration range (3.6 Ã 10â7-1.4 Ã 10â5 g mLâ1) was achieved, with a detection limit of 9.6 Ã 10â8 g mLâ1. The mechanism of electrode reaction was fully discussed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 51, Issue 4, 1 November 2005, Pages 649-654
Journal: Electrochimica Acta - Volume 51, Issue 4, 1 November 2005, Pages 649-654
نویسندگان
Yan Zeng, Zhi-Hong Zhu, Rui-Xia Wang, Guang-Han Lu,