摘要
本文介绍了用被动式个体采样器同时测定空气中ＳＯ２和ＮＯ２的方法，吸收层用三乙醇胺（２０％）＋碳酸钠（５％）溶液浸渍的滤纸，采样后分成两等分，分别测定ＳＯ２和ＮＯ２浓度。与有动力的溶液吸收管现场对比验证，表明两者结果是一致的。在外环境监测时，为了克服风速的影响，可将被动式个体采样器放在ＴＳＰ流量采样器的帽形采样头中，这样可同时测定环境空气中ＴＳＰ、ＳＯ２和ＮＯ２。
The paper presents a new method of measuring SO_2 and NO_2 in ambient air by a passive personal sampler.The fiber filter paper impregnated with the solution of the triethanolamine(20%)and Na_2CO_3(5%)was used as absorbent layer.After sampling,the filter paper was cut into two parts and determined SO_2 and NO_2 concentration respectively.According to the comparative test of the passive sampler with active bubble sampler in field,both results were agreed well.In outdoor environmental monitoring,the passive personal sampler was installed in interior of the cap of a medium volume TSP sampler for eliminating the influence of sampler,and can measure TSP,SO_2 and NO_2 in ambient air simultaneously.
出处
《中国环境监测》
CAS
CSSCI
CSCD
北大核心
1998年第1期41-43,共3页
Environmental Monitoring in China
