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提高汞的显色反应灵敏度是目前微量金属分析所关注的问题之一。国内外文献中关于用分光光度法分析微量汞的方法报导较多,其中尤以A.Cabrera—Martin等人的文章所提出的汞(Ⅱ)—XO—HMTA三元络合物显色体系的灵敏度为最高,摩尔吸光系数ε_(590)=2.2×10~(5)l·mol~(-1)·cm~(-1)。
Improving the color reaction sensitivity of mercury is one of the concerns of the current trace metal analysis. Domestic and foreign literature on the use of spectrophotometric method for the analysis of trace mercury, especially in A.Cabrera-Martin et al. Proposed mercury (II) -XO-HMTA ternary complex chromogenic system The highest sensitivity was obtained. The molar extinction coefficientε_ (590) was 2.2 × 10 ~ (5) l · mol -1 (-1) cm -1.