کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6662711 | 463225 | 2014 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Differential pulse anodic stripping voltammetric determination of Pb ion at a montmorillonites/polyaniline nanocomposite modified glassy carbon 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: Differential pulse anodic stripping voltammetric determination of Pb ion at a montmorillonites/polyaniline nanocomposite modified glassy carbon electrode Differential pulse anodic stripping voltammetric determination of Pb ion at a montmorillonites/polyaniline nanocomposite modified glassy carbon electrode](/preview/png/6662711.png)
چکیده انگلیسی
In this paper, Na+-montmorillonites/polyaniline nanocomposite modified glassy carbon electrode (PANI/MMT/GCE) was prepared and characterized by scanning electron microscopy and electrochemical techniques. It was found that when PANI/MMT film was modified on the electrode, electrochemical responses could be improved significantly. The modified electrode could be applied in sensitive detection of Pb2+ by differential pulse anodic stripping voltammetry (DPASV). The 50 wt% feeding ratio of MMT to aniline of the nanocomposite exhibited the best electrochemical response to Pb2+. In 0.2 mol Lâ1 acetate buffer solution (pH 3.5), the stripping peak currents after enrichment at â1.20 V for 120 s showed good linear relationships with Pb2+ at concentration ranges of 4-100 nM with the correlation coefficient of 0.998, and the detection limit is 1 nM. The proposed method is applicable in the determination of trace Pb2+ in real water samples with the relative standard deviations less than 5.2% and the recovery rates of 94-103%.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Electroanalytical Chemistry - Volumes 717â718, 15 March 2014, Pages 206-212
Journal: Journal of Electroanalytical Chemistry - Volumes 717â718, 15 March 2014, Pages 206-212
نویسندگان
YongPing Dong, Yong Ding, Ying Zhou, Jun Chen, ChengMing Wang,