微波消化-氢化物原子吸收法测定大百合中砷的含量

Determination of arsenic in Cardiocrinum giganteum by microwave digestion hydride generation atomic Absorption spectrometry*

采用微波消解样品，氢化物原子吸收法测定As含量。本法检出限为0．036μg·kg^-1，变异系数RSD=5．48％，回收率为90％-101％。该方法简单快速，灵敏度高，可作为测定药用植物大百合中微量As的方法。

Hydride generation atomic absorption spectrometry was used to determine arsenic by tnicrowave digesting sample. The detection limit of the method was 0.036μ g · kg^-1 , RSD = 5.48% , the recovery was in the range of 90% - 101%. The method is simple, rapid and with high sensitivity, and can be applied for the determination of trace amounts arsenic in Cardiocrinum giganteum.