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首页> 外文期刊>Environmental toxicology and chemistry >PROFILE OF TOXIC RESPONSE TO SEDIMENTS USING WHOLE-ANIMAL AND IN VITRO SUBMITOCHONDRIAL PARTICLE (SMP) ASSAYS
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PROFILE OF TOXIC RESPONSE TO SEDIMENTS USING WHOLE-ANIMAL AND IN VITRO SUBMITOCHONDRIAL PARTICLE (SMP) ASSAYS

机译:使用全动物和体外亚软骨软骨颗粒(SMP)检测对沉积物的毒性反应概况

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摘要

A rapid bioassay for monitoring acute toxicity of wastewater, ground water, and soil and sediment extracts using submi-tochondrial particles (SMP) has been developed. The assay utilizes the mitochondrial electron transfer enzyme complex, present in all eukaryotic cells. Prior developmental work with pure chemicals chosen from the U.S. Environmental Protection Agency's (EPA) priority pollutant list documented order-of-magnitude predictability between the bioassay response and whole-organism tests (e.g., fathead minnow). Recent work has adapted the assay for analysis of uncharacterized environmental samples, including stormwater runoff, landfill leachate, and soil and sediment extracts. A feasibility study was performed to determine whether the SMP assay could detect toxicity in samples previously assessed for toxicity to amphipods. Acute toxicity tests using Hyalella azteca were performed on 30 sediment samples from Colorado's Arkansas River, Eagle River, and Chalk Creek watersheds, all of which have been directly or indirectly affected by heavy metal mine tailings and drainage. In parallel, two SMP assay protocols designed to differentiate between modes of toxicity were performed on elutriate samples from 23 of the above sites. The results from analysis of the sediments differed widely in the nature and degree of test responses. Significant correlation was found between the responses of the SMP electron transfer protocol and the whole-organism assay, and between the responses of the SMP electron transfer protocol and levels of zinc and sulfur, as determined by inductively coupled plasma spectroscopy.
机译:已经开发出一种快速生物测定法,用于利用亚线粒体颗粒(SMP)监测废水,地下水以及土壤和沉积物提取物的急性毒性。该测定利用存在于所有真核细胞中的线粒体电子转移酶复合物。从美国环境保护署(EPA)优先污染物清单中选择的纯化学物质的先前开发工作记录了生物测定响应和整个生物体测试之间的数量级可预测性(例如胖头min鱼)。最近的工作已对该测定法进行了调整,以分析未表征的环境样品,包括雨水径流,垃圾填埋场渗滤液以及土壤和沉积物提取物。进行了可行性研究,以确定SMP分析是否可以检测先前评估过的两栖动物毒性的样品中的毒性。对来自科罗拉多州阿肯色河,伊格尔河和查尔克里克河流域的30个沉积物样品进行了使用透明质酸的急性毒性测试,所有这些沉积物都直接或间接地受到重金属矿山尾矿和排水系统的影响。同时,对来自上述部位中23个部位的洗出液样品进行了两种旨在区分毒性模式的SMP分析规程。沉积物分析的结果在测试响应的性质和程度方面差异很大。通过电感耦合等离子体光谱法确定,在SMP电子转移方案的响应与全生物测定之间以及SMP电子转移方案的响应与锌和硫含量之间存在显着相关性。

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