Koutsaftis Apostolos, Aoyama Isao
Research Institute for Bioresources, Okayama University, Chuo Kurashiki, Japan.
J Environ Sci Health A Tox Hazard Subst Environ Eng. 2008 Dec;43(14):1581-5. doi: 10.1080/10934520802329794.
Diuron and copper pyrithione (CuPT) are two substances that have been used worldwide as alternatives to tributyltin (TBT) in antifouling paints for the protection of ship hulls. In this study their toxicity against the brine shrimp Artemia franciscana is examined under several combinations of salinity and temperature using the LC(20), LC(50) and LC(80) values found for the 25 degrees C and 35 per thousand standard conditions. A significant interaction between temperature and salinity effects was observed for both chemicals. Decreasing temperature almost eliminated Diuron's toxicity, while a toxicity reduction was also observed for CuPT. Decreasing salinity decreased Diuron's toxicity, while for CuPT the effect of salinity was more complex. These two natural environmental parameters had a profound influence on the ecotoxicity of the two tested chemicals, and this highlights the importance of considering the implications of such factors when conducting ecological risk assessment.
敌草隆和吡啶硫酮铜（CuPT）是全球范围内用于船体防污漆中替代三丁基锡（TBT）的两种物质。在本研究中，利用在25摄氏度和35‰标准条件下测得的LC(20)、LC(50)和LC(80)值，在盐度和温度的几种组合下研究了它们对卤虫的毒性。两种化学品均观察到温度和盐度效应之间存在显著的相互作用。温度降低几乎消除了敌草隆的毒性，同时也观察到CuPT的毒性降低。盐度降低降低了敌草隆的毒性，而对于CuPT，盐度的影响更为复杂。这两个自然环境参数对两种受试化学品的生态毒性有深远影响，这突出了在进行生态风险评估时考虑这些因素影响的重要性。
