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논문 기본 정보

자료유형
학술저널
저자정보
황규철 (한국해양과학기술원) 안준건 (한국해양과학기술원) 이승현 (한국해양과학기술원) 최원식 (부경대학교) 임운혁 (한국해양과학기술원)
저널정보
한국대기환경학회 한국대기환경학회지(국문) 한국대기환경학회지 제36권 제5호
발행연도
2020.10
수록면
645 - 668 (24page)
DOI
10.5572/KOSAE.2020.36.5.645

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초록· 키워드

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Diurnal variation of ozone and volatile organic compounds (VOCs) were monitored at representative urban and harbor sites in Busan during January and April 2019. A mobile laboratory equipped with selected ion flow tube mass spectrometry (SIFT-MS), cavity ring-down spectroscopy (CRDS), and ozone analyzer was used for close proximity measurement of region-specific sources. Field measurement method of VOCs by SIFT-MS was verified using tiered approach. Fifty-three kinds of VOCs including alkane, alkene, aromatic, alcohol, carboxylic acid, aldehyde, ketone and halogenated compounds were measured in this study. Carbon dioxide well reflected diurnal variation of car exhaust and showed good correlation with ozone concentration, implying that CO₂ can be a good tracer for local fossil fuel combustion and ozone contamination. Urban and harbor sites showed different VOCs characteristics, mainly affected by gasoline and heavy-duty diesel vehicle exhaust, respectively. Ozone formation potential (OFP) of VOCs was analyzed by group, in which carbonyl compounds including aldehyde, ketone and carboxylic acid accounted for more than 60 and 70% of OFP at urban and harbor site, respectively. Ozone production per concentration index (OPCI) was proposed to calculate relative contribution of individual compound’s OFP to concentration. Formaldehyde showed the highest OPCI, followed by acrylic acid, aromatic compounds. This study mainly focused on method development of realtime field measurement of VOCs and their contribution to ozone formation, which is expected to provide methodological basis for observation based model study of photochemical reaction of VOCs.

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Abstract
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2. 연구방법
3. 결과 및 고찰
4. 결론
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