Speciation Analysis of Ultra Trace Levels of Mercury in Natural Waters
Speciation Analysis of Ultra Trace Levels of Mercury in Natural Waters
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发表时间：
2003
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通讯作者：
Y. Hai
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作者：
Y. Hai
天然水体中总汞浓度仅在ng/L范围内，干扰和污染使水样中汞的直接测定变得困难。本文提出了两段汞齐预富集-原子荧光光谱法（AFS）测定天然水体中超痕量汞的方法。其检出限为0.02ng/L，平均回收率为101%。该方法同样适用于其他水样中汞的形态分析。
Total mercury concentrations in natural waters are only in the range of ng/L,and interference and contamination make the direct determination of mercury in water samples difficult.In this paper,a method of two-stage amalgamation pre_concentration coupled with atomic fluorescence spectrometry(AFS)is proposed for the determination of ultra trace levels of mercury species in natural waters.Its detection limit is0.02ng/L,and its average recovery rate is101%.This method is also applicable to the speciation analysis of mercury in other types of water samples.