Fate and ecotoxicity of new antifouling compounds in aquatic environments.

水生环境中新型防污化合物的归宿和生态毒性。

基本信息

批准号：
11680530
负责人：
OKAMURA Hideo
金额：
$ 2.11万
依托单位：
Kobe University of Mercantile Marine (2002)Okayama University (1999-2001)
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1999
资助国家：
日本
起止时间：
1999 至 2002
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-11680530/
关键词：
New antifouling compound ecotoxicity fate aquatic environment degradation persistent Irgarol 1051 Diuron DCMU

项目摘要

The aim of this study was to establish management strategy for the new antifouling compounds alternative to organotins. Compounds used were Irgarol 1051, Diuron, KH 101, Zinc pirithione, Copper Pyrithione, and Sea-Nine 211. Conclusions obtained were as follows :1) Pollution of Japanese aquatic environmentThe highest concentrations of three compounds detected in Japanese ambient waters were as follows ; 0.30 μg/L for Irgarol 1051, 1.9 μg/L for M1, and 3.1 μg/L for Diuron. Three-year survey at two stations indicated the concentrations in higher order as Diuron > Irgarol 1051 > M1, generally.2) Degradation studyMercuric ion could catalyze hydrolysis of Irgarol in water to produce M1. Solar irradiation also degraded Irgarol in water to produce M1. Photodegradation rate of Irgarol was accelerated by natural components in water, suggesting photosensitive degradation with humic substances. The origin of Irgarol, M1, and Diuron detected in water was ascertained to commercial antifouling paints available in Japanese market.3) Ecotoxicity studyEcotoxicity of Irgarol and M1 was evaluated using environmentally relevant organisms such as marine bacteria, microalgae, seaweed, duckweed, zooplankton, and terrestrial plants. The environmental risk of them was assessed with both the ecotoxicological data and residue concentrations. Toxicity of several new antifouling compounds were evaluated using juvenile fish, suspension-cultured fish cells, fertilized egg of sea urchin, and non-target plant species. The toxicity of metal pyrithiones was high to those species tested, especially zinc pyrithione inhibited sea urchin egg development at femtgram per liter. The metal pyrithiones irradiated with UV-A lamp decreased its toxicity to sea urchin, depending on the duration of light treatment. This suggested that metal pyrithiones could be degraded by solar irradiation.

该研究的目的是针对有机素的新反式替代品。在日本的环境中，IRGAROL 1051的0.30/L，M1的1.9μg/L，diuron的3.1μg/L。 > M1，2）降解晶状体可以在水中降解IRGAROL的ion辐射。 3）使用相关生物毒性毒性毒品可用的市场，使用海洋bactteria，微藻，海藻，浮游植物，浮游植物和地植物来评估Irgarol和M1的生态毒素。使用少年鱼类，鱼细胞，海胆的卵子和非目标植物物种评估了几种新的防腐剂的毒性用UV-A灯照射的载脂降低了其汤姆海胆，具体取决于光处理的持续时间。