کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
575504 | 1453056 | 2016 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Ultra-trace determination of methylmercuy in seafood by atomic fluorescence spectrometry coupled with electrochemical cold vapor generation
ترجمه فارسی عنوان
تعیین فوق العاده ریز متیل مولکولی در غذاهای دریایی به وسیله اسپکترومتری فلورسانس اتمی همراه با تولید بخار سرد الکتروشیمیایی
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کلمات کلیدی
تولید بخار سرد الکتروشیمیایی، متیل کرچک، غذاهای دریایی، طیف سنجی فلورسانس اتمی،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
بهداشت و امنیت شیمی
چکیده انگلیسی
A homemade electrochemical flow cell was adopted for the determination of methylmercury. The cold vapor of mercury atoms was generated from the surface of glassycarbon cathode through the method of electrolytic reduction and detected by atomic fluorescence spectroscopy subsequently. The operating conditions were optimized with 2 ng mLâ1 methylmercury standard solution. The caliberation curve was favorably linear when the concentrations of standard HgCH3+ solutions were in the range of 0.2-5 ng mLâ1(as Hg). Under the optimized conditions, the limit of detection (LOD) for methylmercury was 1.88 Ã 10â3 ng mLâ1 and the precision evaluated by relative standard deviation was 2.0% for six times 2 ng mLâ1 standard solution replicates. The terminal analytical results of seafood samples, available from local market, showed that the methylmercury content ranged within 3.7-45.8 ng gâ1. The recoveries for methylmercury spiked samples were found to be in the range of 87.6-103.6% and the relative standard deviations below 5% ï¼n = 6ï¼were acquired, which showed this method was feasible for real sample analysis.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Hazardous Materials - Volume 304, 5 March 2016, Pages 467-473
Journal: Journal of Hazardous Materials - Volume 304, 5 March 2016, Pages 467-473
نویسندگان
Wenchuan Zu, Zhenghao Wang,