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Simultaneous determination of methylmercury and ethylmercury in rice by capillary gas chromatography coupled on-line with atomic fluorescence spectrometry
Shi, JB; Liang, LN; Jiang, GB
2005
Source PublicationJOURNAL OF AOAC INTERNATIONAL
Volume88Issue:2Pages:665-669
AbstractA comprehensive method for simultaneous determination of methylmercury (MeHg) and ethylmercury (EtHg) in rice by capillary gas chromatography (GC) coupled on-line with atomic fluorescence spectrometry was developed. The experimental conditions, including the pyrolyzer temperature and flow rates of the make-up gas and sheath gas, were optimized in detail. The absolute detection limits (3 sigma) were 0.005 ng as Hg for both MeHg and EtHg. The relative standard deviation values (n = 5) for 10 ng Hg/mL of MeHg and EtHg were 2.5 and 1.3%, respectively. The method was evaluated by analyzing 2 certified reference materials (DORM-2 and GBW08508), and the determined values of MeHg and total mercury concentrations were in good agreement with the certified values. In addition, the recoveries of MeHg and EtHg spiked into a rice sample collected from Jiangsu province in China were 86 and 77%, respectively. The proposed method was applied to analysis of MeHg and EtHg in 25 rice samples cultivated in 15 provinces of China. In all samples, MeHg was detectable and no EtHg was found. The MeHg contents in rice samples ranged from 1.9 to 10.5 ng/g, accounting for 7-44% of the total mercury measured.
Department环境化学与生态毒理学国家重点实验室
WOS Research AreaChemistry ; Food Science & Technology
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Document Type期刊论文
Identifierhttps://ir.rcees.ac.cn/handle/311016/23230
Collection环境化学与生态毒理学国家重点实验室
Recommended Citation
GB/T 7714
Shi, JB,Liang, LN,Jiang, GB. Simultaneous determination of methylmercury and ethylmercury in rice by capillary gas chromatography coupled on-line with atomic fluorescence spectrometry[J]. JOURNAL OF AOAC INTERNATIONAL,2005,88(2):665-669.
APA Shi, JB,Liang, LN,&Jiang, GB.(2005).Simultaneous determination of methylmercury and ethylmercury in rice by capillary gas chromatography coupled on-line with atomic fluorescence spectrometry.JOURNAL OF AOAC INTERNATIONAL,88(2),665-669.
MLA Shi, JB,et al."Simultaneous determination of methylmercury and ethylmercury in rice by capillary gas chromatography coupled on-line with atomic fluorescence spectrometry".JOURNAL OF AOAC INTERNATIONAL 88.2(2005):665-669.
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