A denuder-based method for sampling and separating gaseous and particulate mercury in the air was described. The comparison results for denuder and a traditional filtration method were presented.
本文叙述一种分离大气中气态汞和颗粒态汞的扩散管采样方法,将它与传统的滤膜过滤法测得的结果进行比较。
Measurements of particulate nitrate and gaseous nitric acid in ambient air were studied by denuder difference and filter packs.
研究了用扩散管差分法和多种叠层滤膜法测量大气中颗粒物硝酸盐和气体硝酸。
The denuder difference experiment can be used to measure particulate ammonium and gaseous ammonia in the atmosphere while avoiding losses of particulate ammonium by sampling artifacts.