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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.

本研究的目的是建立管理策略的新的杀虫剂化合物替代有机锡。使用的化合物是Irgarol 1051、敌草隆、KH 101、吡啶甲酸锌、吡啶甲酸铜和Sea-Nine 211。1）日本水环境污染情况在日本环境沃茨中检测到的三种化合物的最高浓度分别为：Irgarol 1051 0.30 μg/L，M1 1.9 μg/L，敌草隆3.1 μg/L。2）降解研究汞离子能催化水溶液中的Irgarol 1051水解生成M1。太阳辐射也降解水中的Irgarol产生M1。Irgarol的光降解速率加快的天然成分在水中，这表明与腐殖物质的光敏降解。3）生态毒性研究利用海洋细菌、微藻、海藻、浮萍、浮游动物和陆生植物等环境相关生物评价了Irgarol和M1的生态毒性。通过生态毒理学数据和残留量评价了其环境风险。用幼鱼、悬浮培养的鱼细胞、海胆受精卵和非靶植物评价了几种新化合物的毒性。金属吡啶硫酮对所测试的物种的毒性较高，特别是吡啶硫酮锌在每升飞克时抑制海胆卵的发育。UV-A灯照射金属吡啶硫酮对海胆的毒性随照射时间的延长而降低。这表明，金属吡啶硫酮可以通过太阳辐射降解。