气候变化领域集成服务门户(CCPortal): Chemical characterisation of water-soluble ions in atmospheric particulate matter on the east coast of Peninsular Malaysia

CCPortal

DOI	10.5194/acp-19-1537-2019
	Chemical characterisation of water-soluble ions in atmospheric particulate matter on the east coast of Peninsular Malaysia
	Farren N.J.; Dunmore R.E.; Mead M.I.; Nadzir M.S.M.; Samah A.A.; Phang S.-M.; Bandy B.J.; Sturges W.T.; Hamilton J.F.
发表日期	2019
ISSN	16807316
起始页码	1537
结束页码	1553
卷号	19 期号:3
英文摘要	Air quality on the east coast of Peninsular Malaysia is influenced by local anthropogenic and biogenic emissions as well as marine air masses from the South China Sea and aged emissions transported from highly polluted East Asian regions during the winter monsoon season. An atmospheric observation tower has been constructed on this coastline at the Bachok Marine Research Station. Daily PM 2.5 samples were collected from the top of the observation tower over a 3-week period, and ion chromatography was used to make time-resolved measurements of major atmospheric ions present in aerosol. SO 2- 4 -was found to be the most dominant ion present and on average made up 66 % of the total ion content. Predictions of aerosol pH were made using the ISORROPIA II thermodynamic model, and it was estimated that the aerosol was highly acidic, with pH values ranging from -0:97 to 1.12. A clear difference in aerosol composition was found between continental air masses originating from industrialised regions of East Asia and marine air masses predominantly influenced by the South China Sea. For example, elevated SO 2- 4 - concentrations and increased Cl- depletion were observed when continental air masses that had passed over highly industrialised regions of East Asia arrived at the measurement site. Correlation analyses of the ionic species and assessment of ratios between different ions provided an insight into common sources and formation pathways of key atmospheric ions, such as SO 2- 4 , NHC 4 and C 2 O 2- 4 . To our knowledge, time-resolved measurements of water-soluble ions in PM2:5 are virtually non-existent in rural locations on the east coast of Peninsular Malaysia. Overall this dataset contributes towards a better understanding of atmospheric composition in the Maritime Continent, a region of the tropics that is vulnerable to the effects of poor air quality, largely as a result of rapid industrialisation in East Asia. © 2019 Author(s).
语种	英语
scopus关键词	aerosol composition; air mass; atmospheric chemistry; coast; correlation; ionic composition; temporal variation; Malaysia; Pacific Ocean; South China Sea; West Malaysia
来源期刊	Atmospheric Chemistry and Physics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/144666
作者单位	Wolfson Atmospheric Chemistry Laboratories, Department of Chemistry, University of York, York, YO10 5DD, United Kingdom; Centre for Atmospheric Informatics and Emissions Technology, School of Energy, Environment and Agrifood/Environmental Technology, Cranfield University, Cranfield, United Kingdom; Centre for Tropical Climate Change System (IKLIM), Institute of Climate Change, Universiti Kebangsaan Malaysia, Bangi, Selangor, 43600, Malaysia; School of Environmental Science and Natural Resources, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Bangi, Selangor Darul Ehsan, 43600, Malaysia; Institute of Ocean and Earth Sciences, University of Malaya, Kuala Lumpur, Malaysia; Centre for Ocean and Atmospheric Sciences, School of Environmental Sciences, University of East Anglia, Norwich, United Kingdom
推荐引用方式 GB/T 7714	Farren N.J.,Dunmore R.E.,Mead M.I.,et al. Chemical characterisation of water-soluble ions in atmospheric particulate matter on the east coast of Peninsular Malaysia[J],2019,19(3).
APA	Farren N.J..,Dunmore R.E..,Mead M.I..,Nadzir M.S.M..,Samah A.A..,...&Hamilton J.F..(2019).Chemical characterisation of water-soluble ions in atmospheric particulate matter on the east coast of Peninsular Malaysia.Atmospheric Chemistry and Physics,19(3).
MLA	Farren N.J.,et al."Chemical characterisation of water-soluble ions in atmospheric particulate matter on the east coast of Peninsular Malaysia".Atmospheric Chemistry and Physics 19.3(2019).