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《Environmental Science & Technology》 2009-01
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Adsorption of Phthalate Esters on Sediments of Yellow River

GUO Hong-dong, ZHOU Min, TONG Dan, CHEN Hui(School of Chemistry and Chemical Engineering,Northwest Normal University,Lanzhou730070,China)  
Adsorption kinetics of dimethyl phthalate(DMP)and adsorption isotherms of DMP,diethyl phthalate(DEP), di-n-propyl phthalate(DnPrP)and dibutyl phthalate(DBP)on sediments in Lanzhou section of Yellow River were studied with reverse-phase high performance liquid chromatography.Influence of ionic strength and solvent methanol on adsorption behavior was investigated.Results showed that adsorptive rates of DMP were quick at the beginning and then became slow gradually in a certain concentration range.Adsorption isotherms for DMP and DEP were linear while isotherms for DnPrP and DBP were well fitted Freundlich equation.It was found that the adsorptive capacities of DMP at the sediment decreased with increasing ionic strength and content of solvent methanol.
【Fund】: 甘肃省教育厅科研基金项目(0501-07)
【CateGory Index】: X522
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