斑马贻贝（Dreissena polymorpha）中八种四氯苄基甲苯生物富集因子的测定

Determination of bioconcentration factors of eight tetrachlorobenzyltoluenes in the zebra mussel Dreissena polymorpha.

作者信息

van Haelst A G, Zhao Q, van der Wielen F W, Govers H A, de Voogt P

机构信息

Department of Environmental and Toxicological Chemistry, Amsterdam Research Institute for Substances in Ecosystems, University of Amsterdam, The Netherlands.

出版信息

Ecotoxicol Environ Saf. 1996 Jun;34(1):35-42. doi: 10.1006/eesa.1996.0042.

DOI:10.1006/eesa.1996.0042

PMID:8793318

Abstract

Accurate duplicate bioconcentration factors were determined for tetrachlorobenzyltoluenes (TCBTs). This is the first study that quantifies bioconcentration factors for single TCBT isomers. A continuous flow uptake experiment was performed during 21 days with the zebra mussel (Dreissena polymorpha) as a test organism. Bioconcentration factors (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 bio-concentration test, even if the concentration in the water is not constant and steady state has not been reached. Mean log BCF values of TCBTs ranged from 4.43 +/- 0.05 to 5.19 +/- 0.15 liter.kg-1 on a wet weight basis. The experimental log BCF values were compared with log BCF values of TCBTs, calculated according to linear and polynomial relationships between log BCF and log Kow.

摘要

测定了四氯苄基甲苯（TCBTs）准确的重复生物富集系数。这是第一项对单一TCBT异构体的生物富集系数进行量化的研究。以斑马贻贝（多形饰贝）作为受试生物，进行了为期21天的连续流动摄取实验。通过迭代积分法得出生物富集系数（BCFs）和速率常数。使用该方法，即使水中的浓度不稳定且未达到稳态，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，TCBTs的平均对数BCF值范围为4.43±0.05至5.19±0.15升·千克⁻¹。将实验得到的对数BCF值与根据对数BCF和对数辛醇-水分配系数（log Kow）之间的线性和多项式关系计算得出的TCBTs对数BCF值进行了比较。