摘要
氯化亚锡还原冷蒸汽无色散原子荧光光谱法测定痕量汞,采用硫酸、双氧水、王水逐次加入低温分析样品,可以保证样品分解完全又可避免汞的损失。汞的检出限为6.0×10^(-10)g,精密度RSD％=4.1。该方法操作简便,快速、准确、费用低,可应用于大批量地球化学样品的分析。
A simple, rapid and sensitive method for the determination of trace mercury at the lowest cost by nondispersive atomicfluorescence spectrometry using stannous chloride reducing cold steam is studied in the paper. It can be used in a large amount of geochemical samples. Sulfuric acid, hydrogen peroxide solution and aqua regia are added in the analysed samples of low temperatur by the order to make the samples disintegrated completly and avoide mercury losing. The detection limit of mercury is 6. 0×10^(-10)g; the accuracy RSD % = 4. 1.
关键词
汞
测定
荧光光谱法
Nondispersive atomic fluorescence spectrometry Trace mercury
