光谱学与光谱分析 |
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Determination of Mercury in Shark Liver by Cold Atom Fluorescence Spectrometry after Microwave Dissolution |
WENG Di |
School of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310029, China |
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Abstract The conditions for the determination of mercury in shark liver by cold atom fluorescence spectrometry (CAFS) with microwave dissolution were studied. After being dried completely,the method employed 2 mol·L-1 HNO3-4 mol·L-1 HCl as an oxidant,and with catalysis by V2O5, the samples were digested in a microwave oven. The mercury in absorption solution was reduced by SnCl2, and then was determined by CAFS at wavelength of 253.7 nm. 10% SnCl2 solution was used as a reductive agent for mercury. The linear range was 0-2.0 ng·mL-1 mercury (r=0.999 7). The detection limit was 0.05 ng·mL-1, the relative standard deviation was 0.86%-2.22%, and the average recovery rate was 96.0%-108.5%. The method was suitable for the determination of mercury in shark liver.
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Received: 2004-08-03
Accepted: 2004-12-18
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Corresponding Authors:
WENG Di
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Cite this article: |
WENG Di. Determination of Mercury in Shark Liver by Cold Atom Fluorescence Spectrometry after Microwave Dissolution [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2005, 25(12): 2073-2075.
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URL: |
https://www.gpxygpfx.com/EN/Y2005/V25/I12/2073 |
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