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《ACTA SCIENTIAE CIRCUMSTANTIAE》 1994-04
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RELATION OF AQUATIC PARTICULATE GRAIN SIZE TO HEAVY METALS CONCENTRATIONS IN EASTERN CHINESE RIVERS

Chen Jingsheng;Wang Feiyue(Department of Urban and Environmental Sciences, Peking University, Beijing 100871)Chen Jianglin(The North Sea Monitoring Center, The State Oceanic Administration , Qingdao 266033)  
Grain size is one of the most significant factors controlling aquatic par-ticulates capacity for collecting and concentrating heavy metals.Therefore,the study of heavy metals in aquatic particulates requires consideration of thegrain size effects. In this paper, the methods for correcting the grain sizeeffects were reviewed and discussed. The63μm fraction was then recomme- nded as the most appropriate size separation for reconnaiSsance surveys or monitoring studies of heavy metals in aquatic particulate. The relation of theheavy metals concentrations in50μm fraction to those in 63μm fractionwas studied, for most data in Chinese literature were about 50μm fractions. A total of 27 geographical and hydrological aquatic particulates samples fromthe eastern Chinese rivers were collected, and the concentrations of Cu,Pb,Zn,Cd,Co,Fe,and Mn in both50μm and 63 μm fractions were ana- lysed. Based on the data set,regression models(Regression Model Ⅱ)ofheavy metals concentrations in these two fractions were reported and tested.
【Fund】: 国家自然科学基金
【CateGory Index】: X832
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