复合式吸收器采样还原一体化冷原子吸收法测定大气中的汞

Determination of mercury in the atmosphere by cold atomic absorption with sampling and reduction conducted in a single compound absorber

目的 :研制一种高效率采集大气中汞的吸收器。方法 :利用一种集大泡式与玻砂板式吸收器为一体的复合式吸收器采样 ,并使采样还原一体化冷原子吸收法测定大气中汞。结果 :平均吸收率为 96% ,变异系数在 4%～ 1 2 %之间。结论 :复合式吸收器采样吸收效率高 ,适合于大气中微量汞的测定。

Objective: To develop a new high efficiency absorber for sampling mercury in the atmosphere Methed: To sample with a compound absorber that has the performance of both large bubble and glass sand plate absorber and to determine the mercury in the atmosphere by cold atomic absorption spectrospcopy with sampling and reduction conducted in a single compound absorber Results: The mean absorption rate is 96% The coefficient of variation is between 4% to 12% Conclution: The absorption rate is higher when a sample is taken with a compound absorber which is applicable to the determination of trace mercury in the atmosphere