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《China Water & Wastewater》 2006-03
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Study on the Molecular Weight Distribution of Trihalomethanes Precursors in Source Water of Pearl River

WU Qing~1,QIU Lan~2,QIU Rong-liang~2,SONG Lin~2(1.School of Geographical Science and Planning,Sun Yat-sen University,Guangzhou 510275,China;2.School of Environmental Science and Engineering,Sun Yat-sen University,Guangzhou 510275,China)  
A water sample was collected from the Guangzhou section of the Pearl River,whose dissolved organic matter was fractionated to different molecular weight by ultrafiltration.It was compared that DOC,UV and trihalomethane formation potential(THMFP) of different DOM components were characterized by molecular size.The results show: ① Organic compounds with molecular weight(MW) between 3-10 ku are the major THMs precursors in Guangzhou section of Pearl River;② The smallest MW fraction(1 ku) has the greatest THMs formation potential(THMFP/DOC) despite of its lowest SUVA value;③ Ultrafiltration does not preserve either the SUVA or the THMs formation activity of the source water in spite of little DOM loss after ultrafiltration.
【Fund】: 教育部新世纪优秀人才支持计划项目(NCET-04-0790)
【CateGory Index】: TU991.2
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