蚂蟥作为 PCB 污染河流的感应生物指示剂。

Leeches as Sensor-bioindicators of River Contamination by PCBs.

机构信息

University of Veterinary and Pharmaceutical Sciences Brno, Department of Veterinary Public Health and Toxicology, Palackeho 1-3, 612 42 Brno, Czech Republic.

出版信息

Sensors (Basel). 2009;9(3):1807-20. doi: 10.3390/s90301807. Epub 2009 Mar 13.

DOI:10.3390/s90301807

PMID:22573988

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC3345870/

Abstract

The aim of the study was to evaluate the use of leeches of the genus Erpobdella as a means of assessing polychlorinated biphenyl contamination of watercourses. The River Skalice, heavily contaminated with PCBs, was selected as a model. The source of contamination was a road gravel processing factory in Rožmitál pod Třemšínem from which an estimated 1 metric ton of PCBs leaked in 1986. Levels of PCB were measured in leeches collected between 1992 to 2003 from 11 sites covering about 50 km of the river (the first sampling site upstream to the source of contamination and 10 sites downstream). The PCB indicator congeners IUPA no. 28, 52, 101, 118, 138, 153, and 180 were measured. Levels were highest at the four sampling sites nearest the source of pollution. The highest values of PCB congeners were found in 1992. PCB content decreased from 1992 to 2003 and with distance from the source. The study indicated that leeches of the genus Erpobdella are a suitable bioindicator of contamination in the surface layer of river sediments.

摘要

本研究旨在评估医蛭属（Erpobdella）的水蛭作为评估受多氯联苯（PCBs）污染的水道的一种方法。选择受 PCB 严重污染的斯卡利采河（River Skalice）作为模型。污染的源头是位于特热比奇河畔罗兹米塔尔（Rožmitál pod Třemšínem）的一家道路碎石加工厂，据估计，1986 年有 1 公吨的 PCBs 泄漏。在 1992 年至 2003 年期间，从约 50 公里长的河流的 11 个地点采集了医蛭，对其进行了 PCB 含量的测量（第一个采样点位于污染源的上游，10 个采样点位于下游）。测量了 PCB 指示同系物 IUPA 编号 28、52、101、118、138、153 和 180。在离污染源最近的四个采样点，PCB 含量最高。在 1992 年发现了最高的 PCB 同系物值。自 1992 年以来，PCB 含量随时间推移和距离污染源的远近而下降。研究表明，医蛭属（Erpobdella）的水蛭是河流沉积物表层污染的合适生物指示剂。