大气中全氟与多氟有机化合物研究进展

Research advance on per-and poly-fluorinated organic compounds in the atmosphere

全氟与多氟有机化合物(PFCs)作为表面活性剂被广泛应用于工业生产及生活家居领域,部分PFCs已被列为斯德哥尔摩公约受控持久性有机污染物(POPs).PFCs具有一些特殊的理化性质(如高表面活性、憎水憎油性等),使其采样、分析、环境迁移转化过程等都不同于"传统"POPs(如PCBs、PAHs等).相对于其它环境介质(水、沉积物和生物等)研究,大气中PFCs的研究相对较少.本文针对大气中PFCs的研究现状进行综述,内容涵盖了大气PFCs的样品采集、前处理、仪器分析、含量水平和迁移转化过程,其中重点概述了大气中PFCs的气-颗粒两相分配、长距离迁移、干湿沉降和大气降解,并提出了今后的重点研究方向建议.

Per- and poly-fluorinated organic compounds（ PFCs） are widely used as surfactants in industrial production and domestic furnishing. Several PFCs have been listed as controlled persistent organic pollutants（ POPs） by Stockholm Convention. PFCs have some special physical and chemical properties,such as high surface activity,hydrophobic and oleophobic property,which make them different from the ＂traditional＂POPs（ e. g. PCBs,PAHs） in sampling and analysis procedure,environmental migration and transformation process. Compared to studies in other environmental media（ water,sediment,organism etc.）,the research of PFCs in the atmosphere is relatively scarce. This paper reviews the research advance on PFCs in the atmosphere,including sample collection and pretreatment,instrumental analysis,ambient levels and migration and transformation process of the atmospheric PFCs,focusing on the gas-particle partitioning,long distance transport,dry and wet deposition and atmospheric degradation of PFCs. Finally,some key research directions developed in the future are suggested.