直接测汞仪测定土壤中的总汞

Determination of Total Mercury in Soil by Direct Mercury Analyzer

建立了直接测汞仪快速测定土壤中总汞的方法。通过实验对干燥温度、干燥时间、分解温度、分解时间等条件进行了优化,并进行了线性关系、精密度等实验。结果表明,本法线性范围0—500ng,相关系数≥0.9995,检出限为0.0032ng,相对标准偏差为0.56%。方法灵敏度高,简便、快速、准确,适用于对土壤中的总汞的测定。

The method for rapid determination of total mercury in soil was established by direct mercury analyzer.The conditions such as drying temperature,drying time,decomposition temperature and decomposition time were optimized by experiment.The linear relationship,precision experiment was carried out.The linearity range of the method was 0—500ng,and the correlation coefficient was greater than or equal to 0.9995,the detection limit was 0.0032ng,and the relative standard deviations was 0.56%.The method is simple,rapid,sensitive and accurate,and that is suit to determination of total mercury in soil.