کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6616821 | 459629 | 2013 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Simultaneous voltammetric determination of nitrophenol isomers at ordered mesoporous carbon modified electrode
ترجمه فارسی عنوان
اندازه گیری همزمان ولتامتری از ایزومرهای نیترو فنول در الکترود اصلاح شده کربن مزپورس
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کلمات کلیدی
سفارشات کربن مزپوروس، تشخیص ولتاژ ایزومرهای نیتروفنول، تعیین همزمان،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
چکیده انگلیسی
In this paper, ordered mesoporous carbons (OMCs) modified glassy carbon electrode (GCE) (OMCs/GCE) was employed to investigate the electrochemical behavior of o-nitrophenol (o-NP), m-nitrophenol (m-NP) and p-nitrophenol (p-NP) in ambient-N2 phosphate buffer saline. Compared with bare GCE, the OMCs/GCE exhibited obvious electrocatalytic activity towards nitrophenol isomers. The electrochemical reaction mechanism of nitrophenol at the modified electrode was also studied. At OMCs/GCE, the three nitrophenol isomers could be identified and separated successfully and the simultaneous determination was realized by detecting the reduction peaks of their intermediate products (at 0.209 V vs. saturated calomel electrode for p-NP, 0.020 V for m-NP and â0.201 V for o-NP) with differential pulse voltammetry. Under the optimized experimental conditions, the linear ranges of the calibration curves were 2-90 μM for p-NP, 1-100 μM for m-NP and 0.5-90 μM for o-NP with limits of detection of 0.1 μM, 0.06 μM and 0.08 μM for p-NP, m-NP and o-NP, respectively (S/N = 3). Therefore, the proposed method is simple, rapid, stable, sensitive, specific, reproducible and cost-effective, which can be applicable for real samples detection.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 106, 1 September 2013, Pages 127-134
Journal: Electrochimica Acta - Volume 106, 1 September 2013, Pages 127-134
نویسندگان
Tingting Zhang, Qiaolin Lang, Dapeng Yang, Liang Li, Lingxing Zeng, Cheng Zheng, Tie Li, Mingdeng Wei, Aihua Liu,