【摘要】 当今用于监测环境大气中持久性有机污染物共有5种大气被动采样器(PAS):半透膜仪被动采样器、聚氨酯泡沫碟片被动采样器、XAD-2树脂被动采样器、膜封闭吸收涂料被动采样器包括搅拌棒和硅化人造橡皮棒两种类型,以及最新的XAD-4树脂浸渍的PUF碟片被动采样器.介绍了大气PAS采样技术的基本原理,及采样的关键参数和PAS采样速度(R s)的计算方法.重点论述了世界各国学者关于R s的测定方法和影响R s环境因素的最新研究成果,并指出了今后PAS技术发展需关注的问题.更多还原

【Abstract】 In this paper,five most popular passive air samplers( PAS) used to collect persistent organic pollutants( POPs) in the air are reviewed. They are semi-permeable membrane PAS,polyurethane foam disk PAS,XAD-2 resin PAS,membrane-enclosed sorptive coatings PAS,which includes a stir-bar sampler PAS and a silicone elastomer rod PAS,and sorbent( XAD-4 resin) impregnated polyurethane foam disk PAS. The basic principle of PAS sampling technique and the calculation method of the sampling rate of PAS( R s) for POPs,which is a the key parameter in the calculation of the POPs concentration in the air from the amount of POPs sequestered by the PAS,are introduced,with particular emphasis on the measurement of R s and the latest research results of the influence factors on the R s. Additionally, some important research issues related to the future development of PAS technology are alse indicated.更多还原