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首页> 外文期刊>Environmental Monitoring and Assessment >Pesticide concentrations in water and sediment and associated invertebrate toxicity in Del Puerto and Orestimba Creeks, California, 2007-2008
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Pesticide concentrations in water and sediment and associated invertebrate toxicity in Del Puerto and Orestimba Creeks, California, 2007-2008

机译：2007-2008年，加利福尼亚州德尔波多和奥雷斯蒂巴溪中水和沉积物中的农药浓度及相关的无脊椎动物毒性

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摘要

The California's San Joaquin River and its tributaries including Orestimba (ORC) and Del Puerto (DPC) Creeks are listed on the 2006 US EPA Clean Water Act §303(d) list for pesticide impairment. From December 2007 through June 2008, water and sediment samples were collected from both creeks in Stanislaus County to determine concentrations of organophosphorus (OP) and pyrethroid insecticides and to identify toxicity to Ceriodaphnia dubia and Hyalella azteca. OPs were detected in almost half (10 of 21) of the water samples, at concentrations from 0.005 to 0.912 μg L~(-1). Diazinon was the most frequently detected OP, followed by chlorpyri-fos and dimethoate. Two water samples were toxic to C. dubia; based on median lethal concentrations (LC50), chlorpyrifos was likely the cause of this toxicity. Pyrethroids were detected more frequently in sediment samples (18 detections) than in water samples (three detections). Pyrethroid concentrations in water samples ranged from 0.005 to 0.021 μg L~(-1). These concentrations were well below reported C. dubia LC50S, and toxicity was not observed in laboratory bioas-says. Cyfluthrin, bifenthrin, esfenvalerate, and γ-cyhalothrin were detected in sediment samples at concentrations ranging from 1.0 to 74.4 ng g~(-1), dry weight. At DPC, all but one sediment sample caused 100% toxicity to H. azteca. Based on estimated toxicity units (TUs), bifenthrin was likely responsible for this toxicity and λ-cyhalothrin also contributed. At ORC, survival of H. azteca was significantly reduced in four of the 11 sediment samples. However, pyrethroids were detected in only two of these samples. Based on TUs, bifenthrin and λ-cyhalothrin likely contributed to the toxicity.
机译：加利福尼亚州的圣华金河及其支流（包括Orestimba（ORC）和Del Puerto（DPC）Creeks）被列为2006年美国EPA清洁水法第303（d）条中的农药损害清单。从2007年12月到2008年6月，从斯坦尼斯劳斯县的两条小河中收集了水和沉积物样品，以确定有机磷（OP）和拟除虫菊酯类杀虫剂的浓度，并确定对杜鹃花虫和透明质酸的毒性。在水样中几乎一半（21个中的10个）中检测到OP，浓度为0.005至0.912μgL〜（-1）。二嗪农是最常见的OP，其次是毒死-和乐果。有两个水样对杜仲念珠菌有毒。根据中位数致死浓度（LC50），毒死rif可能是这种毒性的原因。在沉积物样品（18次检测）中检出拟除虫菊酯的频率比在水样品中（3次检测）检出拟除虫菊酯的频率更高。水样样品中拟除虫菊酯的浓度范围为0.005〜0.021μgL〜（-1）。这些浓度远低于报道的C. dubia LC50S，并且在实验室生物测定中未观察到毒性。在沉积物样品中检测到的氟氰菊酯，联苯菊酯，乙草戊酸酯和γ-氟氰菊酯的浓度范围为干重1.0至74.4 ng g〜（-1）。在DPC处，除一个沉积物样品外，所有其他样品均对阿兹台克人H. azteca造成100％毒性。根据估计的毒性单位（TUs），联苯菊酯可能是造成这种毒性的原因，λ-氯氟氰菊酯也起作用。在ORC，11个沉积物样品中有4个的阿兹台克人的存活率显着降低。但是，仅在这些样品中的两个中检测到了拟除虫菊酯。基于TUs，联苯菊酯和λ-氯氟氰菊酯可能是造成毒性的原因。

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  • 来源
    《Environmental Monitoring and Assessment》 |2011年第4期|p.573-587|共15页
  • 作者

    Michael Ensminger; Rick Bergin; Frank Spurlock; Kean S. Goh;

  • 作者单位

    Surface Water Protection Program, Environmental Monitoring Branch, California Department of Pesticide Regulation, 10011 Street,Sacramento, CA 95812, USA;

    Surface Water Protection Program, Environmental Monitoring Branch, California Department of Pesticide Regulation, 10011 Street,Sacramento, CA 95812, USA;

    Surface Water Protection Program, Environmental Monitoring Branch, California Department of Pesticide Regulation, 10011 Street,Sacramento, CA 95812, USA;

    Surface Water Protection Program, Environmental Monitoring Branch, California Department of Pesticide Regulation, 10011 Street,Sacramento, CA 95812, USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    organophosphorus insecticides; pyrethroid; ceriodaphnia dubia; hyalella azteca; aquatic toxicity;

    机译：有机磷杀虫剂;拟除虫菊酯胫骨紫檀透明质酸透明质酸水生毒性;

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