摘要
本文探讨了三层采样头同时采集大气中颗粒物气态硝酸和气态氨的方法。用国产1号有机膜采集颗粒物,5％NaCl浸渍玻璃纤维膜采集气态硝酸,5％H_3PO_4—1％草酸溶液浸渍玻璃纤维膜采集气态氨,并对滤膜的选择及采样过程中可能产生的误差进行了探讨。结果表明,用这种方法同时采集大气中颗粒物、硝酸和氨是简便可行的。
A method of simultaneously collecting atmospheric particulates,nitric acid and ammonia by three-layer filter was established.The first layer was installed with polychloride filter collecting particulates,the second layer was installed with glass fiber filter which was imprengnated with 5% NaCl solution for collecting nitric acid,the third layer was installed with 5% phosphoric acid-1% oxalic acid solution.The different kinds of filters and the imprengnated solutions were compared.The error in sampling ammonia was discussed.This method is feasible in atmospheric condition in general.
出处
《环境化学》
CAS
CSCD
北大核心
1990年第1期32-38,共7页
Environmental Chemistry
