Effects of overlying water properties on sorption of organic pollutants in sediments

Abstract

Abstract: By the method of orthogonal experiment,this paper studied the effects of overlying water temperature,pH,ion- ic strength,and dissolved organic carbon (DOC) on the sorption of phenanthrene and pentachlorophenol (PCP) in sediments.The results showed that temperature was the main factor affecting the sorption behavior of phenanthrene,with the trend of partition coefficient (Kd) decreased with temperature.For PCP,its Kd was the smallest at 20 ℃,and its sorption was decreased with pH.The DOC content of overlying water slightly decreased the Kd of phenanthrene and PCP,and ionic strength only increased the Kd of PCP slightly.The sorption capacity of organic pollutants in sediment was mainly determined by the properties of organic pollutants and sediments.

Key words: Phenanthrene, Pentachlorophenol (PCP), Sediment, Sorption

CLC Number:

X522
X524

CHEN Hualin, CHEN Yingxu, XU Yuntai, SHEN Mengwei . Effects of overlying water properties on sorption of organic pollutants in sediments[J]. Chinese Journal of Applied Ecology, 2005, 16(10): 1938-1942.

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