Study on behavior of POPs and biomonitoring method as a bioindicator

持久性有机污染物的行为及其作为生物指示剂的生物监测方法研究

• 批准号: 15510050
• 负责人: TSUNO Hiroshi
• 金额: $ 2.5万
• 依托单位: KYOTO UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2003
• 资助国家: 日本
• 起止时间: 2003 至 2004
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-15510050/
• 关键词: mussel; bioindicator; PCB; bioaccumulation; concentrations factor; Seto Inland Sea; isomer; prediction of sources of PCBs pollutions

The distribution of PCBs concentrations is monitored in terms of the homologues and the isomers in the Seto Inland Sea to discuss the applicability of the biomonitoring method with mussels as a bioindicator and bioaccumulation characteristics. As a result, the high concentrations of PCBs are distributed in Osaka Bay and the Open Sea of Harima. The principal component analysis applied to PCB homologue and isomer compositions can classify the sampling points and can predict the sources of PCBs pollutions. PCB concentrations in mussels show that the fat concentration in mussels affects the PCBs accumulations. Moreover, it is found that bioaccumulation efficiency of PCBs that are higher than the hepta-CBs into mussels is low because of the high molecular weight. The 2,4,5-substituted isomers of the PCBs are easily to be accumulated, while 2,3,4,5-substituted isomers are difficult to be accumulated. These results prove the applicability of this method and bioaccumulation characteristics of PCBs in mussels.

根据SETO Inland Sea中的同源物和异构体监测PCB浓度的分布，以讨论将生物监测方法与贻贝作为生物指导者和生物蓄积特征的适用性。结果，高浓度的PCB分布在大阪湾和Harima的公海。应用于PCB同源物和异构体组成的主要成分分析可以对采样点进行分类，并可以预测PCBS污染的来源。贻贝中的PCB浓度表明，贻贝中的脂肪浓度会影响PCB的积累。此外，发现高于Hepta-CB的PCB的生物积累效率由于高分子量而低。 PCB的2,4,5取代异构体很容易被积累，而2,3,4,5取代的异构体很难积累。这些结果证明了这种方法的适用性以及PCB在贻贝中的生物积累特征。