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首页> 外文期刊>Environmental toxicology and chemistry >EFFECTS OF STORAGE TIME ON TOXICITY OF SEDIMENTS FROM PUGET SOUND, WASHINGTON
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EFFECTS OF STORAGE TIME ON TOXICITY OF SEDIMENTS FROM PUGET SOUND, WASHINGTON

机译：存储时间对华盛顿州普吉特桑德的沉积物毒性的影响

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The effects of sediment storage time were determined for three sediment toxicity tests: the amphipod test using Rhepoxynius abronius, the polychaete test using Neanthes sp., and the Microtox~® test using Photobacterium phosphoreum. Sediments were collected from a reference area and a contaminated area in Puget Sound to determine the effects of storage time on each type of sediment. Toxicity comparisons were also made between the two kinds of sediment to simulate the manner in which the data might be analyzed in a regulatory or decision-making context. Sediments were stored at 4℃ for as long as 16 weeks. Results of all three toxicity tests varied significantly with storage time for each type of sediment. Amphipod survival generally decreased with storage time, whereas luminescence in the Microtox test and polychaete biomass varied unpredictably. The significance of differences between results for the two sediments varied unpredictably with storage time for the amphipod and Microtox tests. By contrast, differences were consistently significant for all storage times for the polychaete test, primarily because of the large differences in the test response between sediments. These results suggest that effects of storage time are greater for results indicative of low to intermediate levels of toxicity than for results indicative of high levels of toxicity. It is recommended that sediments be tested as soon as possible after field collection to minimize the potential for alterations of toxicity during storage.
机译：在三种沉积物毒性测试中确定了沉积物储存时间的影响：三个步骤分别是使用Rhepoxynius abronius进行的两栖动物测试，使用Neanthes sp。进行的多毛et测试以及使用Photophobacteriumeumum的Microtox®测试。从普吉特海湾的参考区域和受污染区域收集沉积物，以确定储存时间对每种沉积物的影响。还对两种沉积物之间的毒性进行了比较，以模拟在监管或决策环境下分析数据的方式。沉积物在4℃下保存长达16周。对于每种类型的沉积物，所有三种毒性测试的结果均随存储时间的不同而有很大差异。两栖动物的存活率通常随储存时间而降低，而Microtox测试中的发光和多毛生物质却发生不可预测的变化。两种沉积物的结果之间差异的显着性随两栖动物和Microtox测试的储存时间而变化。相比之下，对于多毛绒测试，在所有存储时间上差异始终是显着的，这主要是由于沉积物之间的测试响应差异很大。这些结果表明，对于指示低至中等毒性水平的结果，对于指示高毒性水平的结果，贮存时间的影响更大。建议在田间收集后尽快对沉积物进行测试，以最大程度地减少储存过程中毒性变化的可能性。

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