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根据卫生标准对汞的规定,要求地面水中汞的含量不能超过1微克/升,而对有机汞的含量则不能超过0.1微克/升。现行比色分析法的灵敏度已经不能适应此项要求,在此情况下,需采用仪器分析方能满足饮水中微量汞的测定。
Requirements for mercury under health standards require that mercury in surface waters be less than 1 μg / L, while organic mercury should not exceed 0.1 μg / L. The sensitivity of the current colorimetric analysis can not meet this requirement. In this case, the instrument must be used to meet the determination of trace mercury in drinking water.