实验室内湿度对水中汞分析的影响

Influence of the lab ambient humidity on the mercury analysis in the water samples

在不同实验室湿度条件下,以冷原子吸收法对两个不同浓度的汞的标准样品进行分析对比实验,得出冷原子吸收法测汞易受水气的影响而使测定结果偏高.解决这一影响可采用在实验室内除湿干燥或在管路中增加几级干燥.

The Cold-vapor Atomic Absorption method was adopted to analyze two standard samples with different concentration under different humidity level in laboratory. And the analysis results indicate that the vapor in the lab can make an extra high mercury concentration. To decrease the effect, the dehumidification in the lab is suggested.