首页> 外文期刊>Environmental toxicology and chemistry >FUEL OIL AND DISPERSANT TOXICITY TO THE ANTARCTIC SEA URCHIN (STERECHINUS NEUMAYERI)
【24h】

FUEL OIL AND DISPERSANT TOXICITY TO THE ANTARCTIC SEA URCHIN (STERECHINUS NEUMAYERI)

机译:燃油和对南极海胆(STERECHINUS NEUMAYERI)的不同毒性

获取原文
获取原文并翻译 | 示例
       

摘要

The risk of a major marine fuel spill in Antarctic waters is increasing, yet there are currently no standard or suitable response methods under extreme Antarctic conditions. Fuel dispersants may present a possible solution; however, little data exist on the toxicity of dispersants or fuels to Antarctic species, thereby preventing informed management decisions. Larval development toxicity tests using 3 life history stages of the Antarctic sea urchin (Sterechinus neumayeri) were completed to assess the toxicity of physically dispersed, chemically dispersed, and dispersant-only water-accommodated fractions (WAFs) of an intermediate fuel oil (IFO 180, BP) and the chemical dispersant Slickgone NS (Dasic International). Despite much lower total petroleum hydrocarbon concentrations, physically dispersed fuels contained higher proportions of low-to-intermediate weight carbon compounds and were generally at least an order of magnitude more toxic than chemically dispersed fuels. Based on concentrations that caused 50% abnormality (EC50) values, the embryonic unhatched blastula life stage was the least affected by fuels and dispersants, whereas the larval 4-armed pluteus stage was the most sensitive. The present study is the first to investigate the possible implications of the use of fuel dispersants for fuel spill response in Antarctica. The results indicate that the use of a fuel dispersant did not increase the hydrocarbon toxicity of IFO 180 to the early life stages of Antarctic sea urchins, relative to physical dispersal. (C) 2016 SETAC
机译:在南极水域发生重大海洋燃油泄漏的风险正在增加,但是目前还没有在极端南极条件下的标准或适当的应对方法。燃料分散剂可能提出解决方案;但是,关于分散剂或燃料对南极物种的毒性的数据很少,因此妨碍了明智的管理决策。完成了使用南极海胆(Sterechinus neumayeri)的3个生命历史阶段的幼体发育毒性测试,以评估中间燃料油(IFO 180)的物理分散,化学分散和仅分散剂的水可吸收馏分(WAF)的毒性,BP)和化学分散剂Slickgone NS(Dasic International)。尽管总的石油烃浓度要低得多,但是物理分散的燃料包含较高比例的中低碳化合物,并且通常比化学分散的燃料毒性高至少一个数量级。根据引起50%异常(EC50)值的浓度,胚胎和未孵化的囊胚生命期受燃料和分散剂的影响最小,而幼虫4臂发育期则最敏感。本研究是第一个调查使用燃料分散剂对南极洲燃料泄漏响应的潜在影响的研究。结果表明,相对于物理分散,使用燃料分散剂不会增加IFO 180到南极海胆早期生命期的碳氢化合物毒性。 (C)2016年SETAC

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号