Nontarget screening using passive air and water sampling with a level Ⅱ fugacity model to identify unregulated environmental contaminants  

作　　者：In-Young Chung Yu-Mi Park Hyun-Jeoung Lee Hyuk Kim Dong-Hoon Kim Il-Gyu Kim Sang-Min Kim Young-Sun Do Kwang-Seol Seok Jung-Hwan Kwon 

机构地区：[1]Chemical Research Division, Environmental Health Research Department, National Institute of Environmental Research,Incheon [2]Division of Environmental Science and Ecological Engineering, Korea University

出　　处：《Journal of Environmental Sciences》2017年第12期84-91,共8页环境科学学报（英文版）

基　　金：supported by the National Institute of Environmental Research(No.NIER-RP-2014-335)

摘　　要：It is thought that there are many unregulated anthropogenic chemicals in the environment.For risk assessment of chemicals, it is essential to estimate the predicted environmental concentrations. As an effort of identifying residual organic contaminants in air and water in Korea, nontarget screening using two-dimensional gas chromatography time-of-flight mass spectrometry（GC × GC-TOFMS） was conducted at 10 sites using polyurethane foam passive air sampler and at 6 sites using polydimethyl siloxane（PDMS） passive water sampler in three different seasons in 2014. More than 600 chemical peaks were identified satisfying the identification criteria in air and water samples, respectively, providing a list for further investigation. Chemical substances with reported national emission rates in2014（n = 149） were also screened for potential existence in the environment using a level Ⅱ fugacity model. Most of chemical substances classified as not detectable were not identified with detection frequency greater than 20% by nontarget screening, indicating that a simple equilibrium model has a strong potential to be used to exclude chemicals that are not likely to remain in the environment after emissions from targeted monitoring.It is thought that there are many unregulated anthropogenic chemicals in the environment.For risk assessment of chemicals, it is essential to estimate the predicted environmental concentrations. As an effort of identifying residual organic contaminants in air and water in Korea, nontarget screening using two-dimensional gas chromatography time-of-flight mass spectrometry（GC × GC-TOFMS） was conducted at 10 sites using polyurethane foam passive air sampler and at 6 sites using polydimethyl siloxane（PDMS） passive water sampler in three different seasons in 2014. More than 600 chemical peaks were identified satisfying the identification criteria in air and water samples, respectively, providing a list for further investigation. Chemical substances with reported national emission rates in2014（n = 149） were also screened for potential existence in the environment using a level Ⅱ fugacity model. Most of chemical substances classified as not detectable were not identified with detection frequency greater than 20% by nontarget screening, indicating that a simple equilibrium model has a strong potential to be used to exclude chemicals that are not likely to remain in the environment after emissions from targeted monitoring.

关 键 词：Nontarget screening GC × GC-TOFMS Passive sampling Pollutant release and transfer register（PRTR） Fugacity model 

分 类 号：X830[环境科学与工程—环境工程]