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两次金汞齐–冷原子荧光光谱法测定大气中的痕量气态总汞
DETERMINATION OF TRACE TOTAL GASEOUS MERCURY IN THE ATMOSPHERE BY TWO-STAGE GOLD AMALGAMATION COLD VAPOR ATOMIC FLUORESCENCE SPECTROSCOPY
查看参考文献8篇
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文摘
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建立了两次金汞齐–冷原子荧光光谱法(CVAFS)测定大气中痕量气态总汞(TGM)的方法.研究表明:本方法的绝对检出限为2 pg;当以0.2～0.4 L·min-1采样速度,采集12～48 h时,采样效率 > 99%,精密度为9.63%;样品经2次循环加热分析,热解吸效率 > 99%.这种分析方法还可以运用到其他环境样品痕量汞的测定. |
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其他语种文摘
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A new procedure to determine trace total gaseous mercury (TGM) in the atmosphere by two-stage gold amalgamation cold vapor atomic fluorescence spectroscopy was set up. The detection limit of this method is below 2 pg. When air has been pulled through a sampling trap at the flow rate of 0. 2 ～ 0. 4 L·min~(-1) for 12 - 48 hours, the sampling efficiency of > 99% and precision of 9. 63% are obtained, respectively. The thermal desorption efficiency of samples is > 99% through two analysis heating-cycles. This method also can be used to analyze trace mercury contents in other environmental samples. |
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来源
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地球与环境
,2005,33(1):84-88 【核心库】
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关键词
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大气
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气态总汞
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两次金汞齐–冷原子荧光光谱法
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测定
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地址
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中国科学院地球化学研究所, 环境地球化学国家重点实验室, 贵州, 贵阳, 550002
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1672-9250 |
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学科
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环境科学基础理论 |
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基金
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国家自然科学基金
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文献收藏号
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CSCD:1912676
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参考文献 共
8
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