| 钨精矿中痕量汞的电化学冷蒸气发生-原子荧光光谱测定法 |
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| 引用本文： | 练萍,张旻杰,范玉兰,薛珺,李勋. 钨精矿中痕量汞的电化学冷蒸气发生-原子荧光光谱测定法[J]. 中国钨业, 2008, 23(6) |
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| 作者姓名： | 练萍 张旻杰 范玉兰 薛珺 李勋 |
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| 作者单位： | 赣南师范学院化学与生命科学学院,江西赣州341000 |
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| 基金项目： | 江西省自然科学基金资助项目(2007GZH0377); 国家科技支撑计划课题(2007BAD61B03-1) |
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| 摘 要： | 在断续流动条件下,采用自制的电化学流通池作为汞蒸气发生器,建立了电化学冷蒸气发生法-原子荧光光谱联用技术对汞的分析方法。在优化的实验条件下,汞的荧光强度在0～5.0μg/L范围内与浓度呈良好的线性关系,汞的检出限为1.3 ng/L。对1μg/L Hg测定的相对标准偏差为1.5%(n=11)。方法应用于钨精矿中汞的测定,样品加标回收率在97%～103%之间。方法准确可靠,灵敏度高。
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| 关 键 词： | 电化学冷蒸气发生 原子荧光光谱 钨精矿 汞 |
Determination of Trace Mercury in Tungsten Concentrates by Electrochemical Cold Vapor Generation Coupled with Atomic Fluorescence Spectrometry |
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| LIAN Ping,ZHANG Min-jie,FAN Yu-lan,XUE Jun,LI Xun. Determination of Trace Mercury in Tungsten Concentrates by Electrochemical Cold Vapor Generation Coupled with Atomic Fluorescence Spectrometry[J]. China Tungsten Industry, 2008, 23(6) |
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| Authors: | LIAN Ping ZHANG Min-jie FAN Yu-lan XUE Jun LI Xun |
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| Affiliation: | LIAN Ping,ZHANG Min-jie,FAN Yu-lan,XUE Jun,LI Xun(School of Chemistry , Life Science,Gannan Teacher' s College,Ganzhou 341000,Jiangxi,China) |
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| Abstract: | A method for determining mercury was developed using an intermittent flow electrochemical cold vapor generation coupled with atomic fluorescence spectrometry(ECVG-AFS).The mercury vapor was generated in the electrochemical flow cell.Under the optimized conditions,the calibration curve was linear up to 5 μ g/L Hg.A detection limit of 1.3 ng/L Hg and a relative standard deviation of 1.5 % for 1 μg/L Hg were obtained.The method has been applied to the determination of trace mercury in tungsten concentrates,and the recovery was in the range of 97 %~103 %. |
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| Keywords: | electrochemical cold vapor generation atomic fluorescence spectrometry tungsten concentrates mercury |
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