Application of Passive Samplers for Non-target Monitoring of Organic Chemicals in Air and Water

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Research article

Journal of the Korean Society for Environmental Analysis 2015;18(3):154-163.

수동시료채취기를 이용한 대기 및 수계 유기화학물질의 비표적 검색 모니터링 방법 적용성 검토

정인영¹, 김혁¹, 박유미¹, 김일규¹, 김상민¹, 강은영¹, 김순지¹, 이소화¹, 석광설¹, 최경희¹, 황승율², 권정환³

¹국립환경과학원
²화학물질안전원
³고려대학교

Abstract

The purpose of this study was to compare a few passive samplers that may be used for non-target screening of organic chemicals in air and water. In this study we customized passive sampling and subsequent analytical methods. The methods were applied to three sites (S sites) as potential pollution hotspots and three reference sites (H sites). The number of the chemicals accumulated in polyurethane foam (PUF) in the pollution hotspots was greater than those in the control sites by more than a factor of two. Passive sampling was found to be less affected by the seasonal variations. In S3 site, the results of grab sampling showed significant monthly variations, suggesting the necessity of passive sampling. Up to 90,000 peaks were detected for each site as a result of analyzing of pre-treated samples with two-dimensional gas chromatography time of flight mass spectrometer (2D-GC/TOF-MS) after passive sampling. Especially, there were 800 to 1,800 chemical compounds screened under the condition that the similarity was over 700 and the signal-to-noise ratio was over 1,000. These results suggest that passive samplers would be useful in non-target screening of residual organic chemicals in air and water although further research is needed.

Key Words: Non-target screening, Passive sampler, Grab sampling, PUF, PDMS, SPMD