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首页> 外文期刊>Journal of Sciences >GRAPHITE FURNACE ATOMIC ABSORPTION SPECTROMETRY WITH MATRIX MODIFICATION FOR DETERMINATION OF LEAD IN DRINKING WATER
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GRAPHITE FURNACE ATOMIC ABSORPTION SPECTROMETRY WITH MATRIX MODIFICATION FOR DETERMINATION OF LEAD IN DRINKING WATER

机译：改进的石墨炉原子吸收光谱法测定饮用水中铅。

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摘要

An ammonium vanadate plus sodium molybdate mixed modifier Graphite Furnace Atomic Absorption Spectrometric method has been developed for determination of traces of lead in drinking water. The concentration of lead in the sample is obtained by direct comparison to linear working graph prepared from aqueous standards in the modifier medium. The results indicate the better performance of the proposed modifier over Pd-Mg. Recovery of lead from spiked samples was 99.4%. The within-run and within-batch precisions, RSD, were less than 4%. The limit of detection based on three times the standard deviation of the blank was 0.07 μg l~(-1). The sensitivity and simplicity of the method make it attractive for routine determination of lead in environmental samples.
机译：开发了一种钒酸铵加钼酸钠混合改性剂石墨炉原子吸收光谱法，用于测定饮用水中的痕量铅。通过直接与由改性剂介质中的水性标准液制得的线性工作图进行比较，可以获得样品中铅的浓度。结果表明，所提出的改性剂的性能优于Pd-Mg。从加标样品中回收的铅为99.4％。批内和批内精度RSD均小于4％。基于空白标准偏差三倍的检测限为0.07μgl〜（-1）。该方法的灵敏度和简便性使其对于常规测定环境样品中的铅具有吸引力。

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