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《Environmental Chemistry》 1998-01
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Chen Jingsheng Guan Wenrong Xia Xinghui He Dawei (Department of Urban & Environmental Sciences, Peking University, Beijing 100871)  
Based on the analysis of water-quality data from wate year book and GEMS/WATER, three problems of water-quality trends in the mainstream of Yangtze river from 1960's to 1980's have been studied. They are: (1) the relationship between decrease of alkalinity, increase, Ca2+, SO42+ concentrations and environmental acidification; (2) increase of Cl-and nitrogen compound contents; (3) the response of water-quality to the use of benzene hexachloride in our country.
【Fund】: 国家自然科学基金资助项目
【CateGory Index】: X832
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