直接-火焰原子吸收法测定土壤中微量铅

The Determination of Trace Lead in Soil by Direct-flame Atomic Absorbtion Method

本文进行了高压消解和敞口消解土壤样品的前处理比较实验,采用了高压消解,直接一火焰原子吸收法测定土壤样品中微量铅。方法的相对标准偏差2.2％～4.6％,回收率99％～104％,检出限0.054mg/L。

In this article, engage in comparison experiment of preceding disposal between high press dispel and uncovered dispel in soil sample. The determination of trace lead in soil sample by high press dispel, direct-flame atomic absorbtion was established. The relative standard deviation of method is 2. 2%~4. 6%. The recovery of method is 99%~104%. The detection limit of method is 0. 054mg/L.