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| 吹扫捕集/GC-冷原子荧光法测定包装饮用水中烷基汞 |
| Determination of Alkyl Mercury in Drinking Water by Purge and Trap/Gas Chromatography Cold Vapor Atomic Fluorescence Spectrometry |
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| DOI： |
| 中文关键词: 甲基汞 乙基汞 吹扫捕集 气相色谱-冷原子荧光法 包装饮用水 |
| 英文关键词: Methyl mercury Ethyl mercury Purge and trap Gas chromatography cold vapor atomic fluorescence spectrometry Packaged drinking water |
| 基金项目:江苏省青年医学重点人才基金资助项目(QNRC2016540) |
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| 中文摘要: |
| 采用吹扫捕集/气相色谱-冷原子荧光法测定包装饮用水中烷基汞(甲基汞和乙基汞)。通过优化试剂和仪器条件，使方法在0100 ng/L~100 ng/L范围内线性良好。当取样体积为25 mL时，甲基汞和乙基汞的方法检出限分别为0005 5 ng/L和0004 2 ng/L，市售某品牌包装饮用天然泉水3个质量浓度水平的加标回收率为905%～106%，6次测定结果的RSD为04%～19%。将该方法用于各品牌包装饮用水样品的测定，甲基汞和乙基汞均为未检出。 |
| 英文摘要: |
| A method for the determination of alkyl mercury(methyl mercury and ethyl mercury) in packaged drinking water by purge and trap/gas chromatography cold vapor atomic fluorescence spectrometry was established. With the optimized reagents and instrument parameters， the method had a good linear relationship in the range of 0.100 ng/L～10.0 ng/L. When the sample volume was 25 mL， the detection limits of methyl mercury and ethyl mercury were 0.005 5 ng/L and 0.004 2 ng/L， respectively. The recoveries of the samples from a brand of packaged springwater at 3 mass concentration levels were 90.5%~106%， the relative standard deviations were 0.4%~1.9%（n=6）. The method was applied in determining different kinds of packaged drinking water samples， both methyl mercury and ethyl mercury were undetected. |
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