孔雀鱼（食蚊鱼）和斑马贻贝（多形饰贝）中四氯苄基甲苯生物富集因子的比较。

Comparison of bioconcentration factors of tetrachlorobenzyltoluenes in the guppy (Poecilia reticulata) and zebra mussel (Dreissena polymorpha).

作者信息

van Haelst A G, Loonen H, van der Wielen F W, Govers H A

机构信息

Department of Environmental and Toxicological Chemistry, University of Amsterdam, Netherlands.

出版信息

Chemosphere. 1996 Mar;32(6):1117-22. doi: 10.1016/0045-6535(96)00014-8.

DOI:10.1016/0045-6535(96)00014-8

PMID:8920593

Abstract

Preliminary bioconcentration factors (BCFs) were determined of six tetrachlorobenzyltoluenes (TCBTs) in guppies (Poecilia reticulata). BCFs and rate constants were derived by an iterative integration method. With this method BCFs and rate constants can be derived from experimental data of a bioconcentration test, even if the concentration in the water is not constant and steady state has not been reached. Log BCF values of TCBTs in guppies ranged from 1.67 to 2.68 L.kg-1 on a wet weight basis. These values are much lower than the reported log BCF values of TCBTs in zebra mussels (Dreissena polymorpha) determined with the same method. Biotransformation of TCBTs in guppies as an explanation for the higher log BCF values in zebramussel is discussed.

摘要

测定了孔雀鱼（孔雀鱼）体内六种四氯苄基甲苯（TCBTs）的初步生物富集系数（BCFs）。BCFs和速率常数通过迭代积分法得出。使用该方法，即使水中浓度不恒定且未达到稳态，也可从生物富集试验的实验数据中得出BCFs和速率常数。以湿重计，孔雀鱼体内TCBTs的对数BCF值范围为1.67至2.68 L·kg⁻¹。这些值远低于用相同方法测定的斑马贻贝（多形饰贝）体内TCBTs的报告对数BCF值。文中讨论了孔雀鱼体内TCBTs的生物转化，以此解释斑马贻贝中较高的对数BCF值。