globalchange  > 气候变化事实与影响
DOI: 10.1016/j.atmosenv.2014.06.002
Scopus记录号: 2-s2.0-84902303954
论文题名:
General trends of atmospheric mercury concentrations in urban and rural areas in Korea and characteristics of high-concentration events
作者: Han Y; -J; , Kim J; -E; , Kim P; -R; , Kim W; -J; , Yi S; -M; , Seo Y; -S; , Kim S; -H
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2014
卷: 94
起始页码: 754
结束页码: 764
语种: 英语
英文关键词: In-situ formation ; Long-range transport ; Rural ; Speciated mercury ; Urban
Scopus关键词: Coal combustion ; Mercury (metal) ; Rural areas ; Gas-particle partitioning ; Gaseous oxidized mercuries ; In-situ formations ; Long range transport ; Spatial characteristics ; Speciated mercury ; Total gaseous mercuries ; Urban ; Urban transportation ; coal ; mercury ; atmospheric pollution ; concentration (composition) ; long range transport ; mercury (element) ; oxidation ; pollutant ; relative humidity ; rural area ; urban area ; air monitoring ; air pollutant ; air quality ; air temperature ; ambient air ; article ; atmospheric deposition ; circadian rhythm ; energy consumption ; energy resource ; environmental temperature ; humidity ; Korea ; oxidation ; priority journal ; residential area ; rural area ; seasonal variation ; solar radiation ; urban area ; Chuncheon ; Kangwon ; Seoul [South Korea] ; South Korea
Scopus学科分类: Environmental Science: Water Science and Technology ; Earth and Planetary Sciences: Earth-Surface Processes ; Environmental Science: Environmental Chemistry
英文摘要: Long-term measurement of speciated Hg concentrations is the first step toward identifying the seasonal and spatial characteristics of Hg concentrations; however, atmospheric Hg research is scarce in Korea. In this study, total gaseous mercury (TGM), gaseous oxidized mercury (GOM) and particle-bound mercury (PBM) were measured in urban (Seoul) and rural (Chuncheon) areas over a more than 3 year period in order to improve the understanding of speciated Hg transport. The mean concentrations of TGM, GOM and PBM were 3.72±2.96 (0.19-149.84)ngm-3, 11.3±9.5 (0.9-57.3)pgm-3, and 13.4±12.0 (2.1-64.3)pgm-3 at the Seoul site and 2.12±1.47 (0.26-10.75)ngm-3, 2.7±2.7 (0.1-16.9)pgm-3, and 3.7±5.7 (0.1-30.0)pgm-3 in Chuncheon. Both long-range transport and local sources caused high TGM concentration events, while local coal combustion was a main cause of enhancing the GOM and PBM concentrations in Seoul. However, there was no correlation between the pollutants emitted from coal combustion and the speciated Hg concentration in Chuncheon, indicating that other mechanisms were involved in the Hg increase. We found a positive correlation between the GOM and the O3 concentrations and a negative correlation between the GEM and the GOM concentrations, especially on foggy days, suggesting that the oxidation of GEM was an important source for GOM in Chuncheon. In addition, the ratio of PBM/GOM was inversely proportional to the atmospheric temperature and directly proportional to the relative humidity, which suggests that the in-situ formation of PBM through gas-particle partitioning of GOM was important in rural areas. © 2014 Elsevier Ltd.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81110
Appears in Collections:气候变化事实与影响

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作者单位: Department of Environmental Science, Kangwon National University, 192-1 Hyoja-2-dong, Chuncheon, Kangwon-do, 200-701, South Korea; Environmental Health Center, Kangwon National University Hospital, Kangwon National University School of Medicine, Chuncheon, Kangwon-do, 200-722, South Korea; Department of Environmental and Public Health, School of Public Health, Seoul National University, Seoul, South Korea; Wecos Co., Ltd, Gasan-dong, Geumcheon-gu, Seoul, 153-719, South Korea

Recommended Citation:
Han Y,-J,, Kim J,et al. General trends of atmospheric mercury concentrations in urban and rural areas in Korea and characteristics of high-concentration events[J]. Atmospheric Environment,2014-01-01,94
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