双道原子荧光光谱同时测定土壤中砷、汞的方法研究
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Determination of Arsenic and Mercury Synchronously in Soils with Dual-Channel Atomic Fluorescence Spectrometry
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    摘要:

    研究了土壤中总As、总Hg的同时测定方法,并对消化体系进行了筛选,利用正交试验设计法对测试条件进行了优化。建立了用王水消解样品,在10%盐酸溶液中用双道原子荧光光度计同时测定土壤中As、Hg的新方法。方法线性范围宽(As 0~200 μg/L;Hg 0~10 μg/L);检出限低(As 0.05 μg/L;Hg 0.007 μg/L);As的回收率为96.0%~101.0%,Hg的回收率为97.0%~103.7%;相对标准偏差(RSD) As为2.7%,Hg为4.5%。该方法准确、简便、快速,结果令人满意。

    Abstract:

    Study was carried out on how to determine total arsenic and mercury synchronously, and screen out an optimal digestion system. Test conditions were optimized with the orthogonal test designing method. A new method of determining total arsenic and mercury in 10% hydrochloric acid solution using the dual channel atomic fluorescence spectrometry was set up for soil samples digested in aqua regia. The method has a wide linear range (As 0~200 μg/L and Hg 0~10 μg/L) and low detection limits (As 0.05 μg/L and Hg 0.007 μg/L). The recovery rate varied from 96.0% to 101.0% for As and from 97.0% to 103.7% for Hg in soils, whereas the RSD (n=6) of arsenic was 2.7% and of mercury 4.5%. The method is accurate, rapid and convenient and produces satisfactory results.

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孟立红,任凤山,刘宾.双道原子荧光光谱同时测定土壤中砷、汞的方法研究[J].土壤,2007,39(5):832-836. MENG Li-hong, REN Feng-shan, LIU Bin. Determination of Arsenic and Mercury Synchronously in Soils with Dual-Channel Atomic Fluorescence Spectrometry[J]. Soils,2007,39(5):832-836

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  • 在线发布日期: 2017-05-19
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