کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4979506 | 1453033 | 2017 | 35 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Magnetite-platinum nanoparticles-modified glassy carbon electrode as electrochemical detector for nitrophenol isomers
ترجمه فارسی عنوان
الکترودهای کربن شیشه ای اصلاح شده با نانوذرات مگنتیت و پلاتین به عنوان تشخیص الکتروشیمیایی برای ایزومرهای نیتروفنول
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کلمات کلیدی
الکترود اصلاح شده با شیمیایی مگنتیت، پلاتین، نانوذرات، نیتروفنل ها،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
بهداشت و امنیت شیمی
چکیده انگلیسی
A glassy carbon electrode was modified with magnetite and platinum nanoparticles stabilized with 3-n-propyl-4-picoline silsesquioxane chloride. This chemically-modified electrode is proposed for the first time for the individual or simultaneous electrochemical detection of nitrophenol isomers. Nanoparticles act as catalysts and also increase the surface area. The polymer stabilizes the particles and provides the electrochemical separation of isomers. Under optimized conditions, the reduction peak currents, obtained by differential-pulse voltammetry, of 2-, 3-, and 4-nitrophenol increased linearly with increases in their concentration in the range of 0.1-1.5 μmol Lâ1. In individual analysis, the detection limits were 33.7 nmol Lâ1, 45.3 nmol Lâ1 and 48.2 nmol Lâ1, respectively. Also, simultaneous analysis was possible for 2-, and 4-nitrophenol. In this case, the separation of the peak potentials was 0.138 V and the detection limits were 69.6 nmol Lâ1 and 58.0 nmol Lâ1, respectively. These analytical figures of merit evidence the outstanding performance of the modified electrode, which was also successfully applied to the individual determination of isomers in environmental and biological samples. The magnetite and platinum nanoparticles modified glassy carbon electrode was able to detect nitrophenol isomers at the ppm level in rain water and human urine samples.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Hazardous Materials - Volume 330, 15 May 2017, Pages 105-115
Journal: Journal of Hazardous Materials - Volume 330, 15 May 2017, Pages 105-115
نویسندگان
Giles G. Gerent, Almir Spinelli,