微孔滤膜采样-FAAS法测定大气颗粒物中的银

Determination of Silver in Atmospheric Particulates by FAAS with Micropore Membrane Filter for Sampling

用 0 .2 2μm孔径的微孔滤膜采集大气颗粒物中的银 ,并用火焰原子吸收法测定 ,该方法检出限为0 .56 μg,精密度为 1.2 %— 1.8% ,样品加标回收率为 99.0 %— 10 1%。

Silver in atmospheric particulates was collected by micropore membrane filter of which aperture is 0.22μm and determined by FAAS.The detection limit of this method is 0.56μg/g.The precision is 1.2% ? ?.8% .The recovery is 99.0%—101%.