کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1428449 1509173 2015 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A highly selective voltammetric sensor for nanomolar detection of mercury ions using a carbon ionic liquid paste electrode impregnated with novel ion imprinted polymeric nanobeads
ترجمه فارسی عنوان
سنسور ولتاژ بسیار انتخابی برای تشخیص نانومولار یونهای جیوه با استفاده از یک الکترود مایع کربنی یونی کپسوله شده با نانوکامپوزیت های پلیمری
کلمات کلیدی
الکترود مایع کربن یونیک، پلیمرهای چاپ شده با یونهای نانو، ولتامتری سدی آنالوگ پالس دیفرانسیل، یون جیوه
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد بیومتریال
چکیده انگلیسی


• Synthesis and characterization of Hg2 + imprinted polymeric nanobeads via precipitation polymerization.
• Use of dithizone as a suitable host for quantitative and selective enrichment of Hg2 + ions.
• Construction of a highly selective IIP-based voltammetric sensor for nanomolar detection of Hg2 +.
• Linear responses of 0.5 nM–10 nM and 0.08 μM–2 μM with a limit of detection of 0.1 nM.
• Application to separation and detection of mercury content of different waste water samples

This work reports the preparation of a voltammetric sensor for selective recognition and sensitive determination of mercury ions using a carbon ionic liquid paste electrode (CILE) impregnated with novel Hg2 +-ion imprinted polymeric nanobeads (IIP) based on dithizone, as a suitable ligand for complex formation with Hg2 + ions. The differential pulse anodic stripping voltammetric technique was employed to investigate the performance of the prepared IIP-CILE for determination of hazardous mercury ions. The designed modified electrode revealed linear responses in the ranges of 0.5 nM–10 nM and 0.08 μM–2 μM with a limit of detection of 0.1 nM (S / N = 3). It was found that the peak currents of the modified electrode for Hg2 + ions were at a maximum value in phosphate buffer of pH 4.5. The optimized preconcentration potential and accumulation time were to be − 0.9 V and 35 s, respectively. The applicability of the proposed sensor to mercury determination in waste water samples is reported.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: C - Volume 48, 1 March 2015, Pages 205–212
نویسندگان
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