土壤样品中铅的含量的测定

The determination of lead content in Geochemical samples

目的:考察土壤样品中Pb含量的适用方法,以期得到测定范围较宽、精度较高的配套方法。方法:采用地质实验室常用的发射光谱仪测定低含量Pb(1～100 mg/kg),采用原子吸收分光光度计测定高含量Pb(100～1000 mg/kg),以分段报出的方法。结果:经外部控制样验证合格率达到了95%以上,满足DZ/T0011-2015规范要求。结论:本方法采用地矿实验室常用的发射光谱和原子吸收仪器,具有操作简单、方法准确度高的优点。

Purpose :The suitable method of Pb content in soil samples was investigated in order to obtain a suitable method with wide range and high precision.Method :In our paper, the emission spectrometer commonly used in geological laboratories was used to determine low Pb content(1 ~100 mg/kg), and atomic absorption spectrophotometer was used to determine high Pb content(100~1000 mg/kg).Results: The qualified rate of external control sample was more than 95% meeting the requirements of DZ/T 0011-2015.Conclusion: the method is simple to operate and has the advantages of high accuracy.