沉淀富集-火焰原子吸收光谱法测定水中的铅和镉

Determination of Lead and Cadmium in water by FAAS after Enriching with Sediment

水样用Mg(OH)2沉淀,沉淀富集后采用校准曲线法,火焰原子吸收光谱法直接测定了水样中的铅和镉。所测定的水样中铅和镉的含量远低于国家限定标准,采用此方法回收率为70%—110%。本法简单、快速,结果令人满意。

The content of lead and cadmium in water were determined by flame atomic absorption spectroscopy after enriching with precipitated by Mg（OH）2. The lead and cadmium in the water is less than the government standard. The recoveries of the elements are between 70% to 110 %. The method is simple, rapid,accuracy and satisfactory.