基于极性有机化合物整合采样器的水环境有机污染物测定

作为一种被动采样技术，极性有机化合物整合采样器（polar organic chemical integrative sampler，POCIS）具有安全、易使用、可进行低浓度监测、高回收率和抗生物污染等优点，由于POCIS可以测定极性有机化学物质的时间加权平均（time-weighted average，TWA）浓度，能够更为全面地反映污染物的长期影响。近年来POCIS已被广泛应用于水环境中农药、药品、内分泌干扰物等有机污染物的分离和富集，以及新兴痕量有机污染物的环境行为和生态风险的评价。介绍了POCIS的结构、原理和校准方法，综述了该装置在水环境中不同类型有机污染物监测中的应用，结合装置特点和实际应用，提出了POCIS在实际环境中需要解决的问题和后续进一步改进的方向。

MEASUREMENT OF ORGANIC CONTAMINANTS IN WATER ENVIRONMENT BASED ON POLAR ORGANIC CHEMICAL INTEGRATIVE SAMPLER

As a passive sampling technique, the polar organic chemical integrative sampler (POCIS) has the advantages of safety, simple operation, low concentration monitoring, high recovery, and anti-biological pollution. Due to the determination of time-weighted average concentration (TWA) for polar organic chemicals, reflecting the long-term effects of pollutants, POCIS has been widely applied in the separation and enrichment of pesticides, drugs, endocrine disruptors and other organic pollutants in water environment, as well as the assessment of the environmental behaviors and ecological risks for emerging trace organic pollutants. This paper introduced the structure, principle and calibration method of POCIS, and summarized its application in monitoring of different types of organic pollutants in water environment. Based upon the characteristics and practical application of the device, the problems faced in the actual environment were suggested and the research direction for further improvement of the device was proposed.