环状扩散管-分级采样器的建立和细粒子酸性的测定  

DESIGN OF AN ANNULAR DENUDER/CASCADE IMPACTOR SYSTEM AND MEASUREMENT OF ACIDITY OF FINE PARTICLES

作　　者：孙庆瑞[1] 王美蓉[1] 田洪海 陈旦华[1] 

机构地区：[1]北京大学技术物理系

出　　处：《环境科学学报》1998年第1期56-61,共6页Acta Scientiae Circumstantiae

摘　　要：建立了国内第一台扩散管分级采样器，用来研究大气气溶胶的组成和细粒子的酸性．实验证明该采样系统能够有效地避免大气中的碱性物质对颗粒物采样的干扰．在北京、湖南等地进行了现场实验，测定了气溶胶的酸性．An annular denuder/cascade impactor system was designed and evaluated for the first time in China to study aerosol acidity. Laboratory tests and field mesurements showed a good performance of the system, capable of avoiding interference of basic gases, such as NH 3 , with acid aerosols during sampling. The acidity of fine particles was measured in nine sites of China.

关 键 词：气溶胶 采样器 颗粒物酸性 大气监测 

分 类 号：X831.01[环境科学与工程—环境工程] X831.02