摘要
采用分子筛固体吸附管采集空气中的二氧化氮样品,再借助离子色谱法来进行测定。结果表明,当采样体积为48L时,方法检出限为0.007mg/m^3,测定下限为0.028mg/m^3。解吸效率在92.41%～99.97%之间,穿透容量>471.0μg,可见固体吸附管采样—离子色谱法可较好的实现对空气中二氧化氮的测定。
Nitrogen dioxide in air was collected by molecular sieve solid adsorption tube, and then determined by ion chromatography. The results showed that the detection limit was 0.007mg/m3 and the lower limit was 0.028mg/m3 when the sampling volume was 48L. The desorption efficiency is between 92.41% and 99.97%, and the penetration capacity is more than 471.0 ug. It can be seen that solid adsorption tube sampling-ion chromatography can better realize the determination of nitrogen dioxide in air.
关键词
固体吸附管采样
离子色谱法
二氧化氮
solid adsorption tube sampling
ion chromatography
nitrogen dioxide
