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Mobility, ecotoxicity, bioaccumulation and sources of trace elements in the bottom sediments of the Rożnów reservoir
Environmental Geochemistry and Health ( IF 3.2 ) Pub Date : 2021-05-10 , DOI: 10.1007/s10653-021-00957-4
Magdalena Szara-Bąk 1 , Agnieszka Baran 1 , Agnieszka Klimkowicz-Pawlas 2 , Joanna Tkaczewska 3 , Barbara Wojtasik 4
Affiliation  

The aim of the study was to use of geochemical, chemical, ecotoxicological and biological indicators for a comprehensive assessment of ecological risks related to the mobility, ecotoxicity and bioavailability of trace elements in the bottom sediment of the Rożnów reservoir. The study found three elements deserving attention in the sediments: cadmium, nickel and chromium. Cadmium proved to be the most mobile and bioavailable, although the total cadmium content and geochemical indicators did not reveal any risk to organisms. Geochemical indicators showed that the sediments are contaminated with nickel and chromium, but both elements had a low bioaccumulation factor. Fractional analysis also revealed relatively low mobility of Cr and Ni and a higher potential risk of bioavailability for nickel. Most of the tested sediment samples had low toxicity in relation to the tested organisms. For H. incongruens, 11% of the samples were non-toxic, 50% of the samples had low toxicity, and 39% of the samples were toxic. For A. fischeri, no toxicity was found in 7% of the samples, low toxicity in 76% of the samples and toxicity in 17% of the sediment samples. The As, Cd, Cu content in the F1 fraction correlated significantly positively with the content of these metals in mussel tissues. Both biotesting and chemical analysis can reveal a potential risk to aquatic organisms. For a real assessment of the ecological risks associated with trace elements, it is necessary to use bioindicators taken from the environment and exposed to trace elements in situ.



中文翻译:

Rożnów 水库底部沉积物中微量元素的流动性、生态毒性、生物积累和来源

该研究的目的是利用地球化学、化学、生态毒理学和生物学指标,全面评估与 Rożnów 水库底部沉积物中微量元素的流动性、生态毒性和生物有效性相关的生态风险。该研究在沉积物中发现了三种值得关注的元素:镉、镍和铬。镉被证明是最具流动性和生物可利用性的,尽管总镉含量和地球化学指标并未显示对生物体有任何风险。地球化学指标显示沉积物被镍和铬污染,但两种元素的生物富集系数都较低。分数分析还显示 Cr 和 Ni 的迁移率相对较低,而镍的生物利用度潜在风险较高。大多数测试的沉积物样品与测试的生物体相比具有低毒性。对于 H. incongruens,11% 的样本是无毒的,50% 的样本是低毒的,39% 的样本是有毒的。对于 A. fischeri,7% 的样品没有发现毒性,76% 的样品具有低毒性,17% 的沉积物样品具有毒性。F1组分中的As、Cd、Cu含量与贻贝组织中这些金属的含量呈显着正相关。生物测试和化学分析都可以揭示对水生生物的潜在风险。为了真正评估与微量元素相关的生态风险,有必要使用从环境中提取并原位暴露于微量元素的生物指示剂。50% 的样品具有低毒性,39% 的样品具有毒性。对于 A. fischeri,7% 的样品没有发现毒性,76% 的样品具有低毒性,17% 的沉积物样品具有毒性。F1组分中的As、Cd、Cu含量与贻贝组织中这些金属的含量呈显着正相关。生物测试和化学分析都可以揭示对水生生物的潜在风险。为了真正评估与微量元素相关的生态风险,有必要使用从环境中提取并原位暴露于微量元素的生物指示剂。50% 的样品具有低毒性,39% 的样品具有毒性。对于 A. fischeri,7% 的样品没有发现毒性,76% 的样品具有低毒性,17% 的沉积物样品具有毒性。F1组分中的As、Cd、Cu含量与贻贝组织中这些金属的含量呈显着正相关。生物测试和化学分析都可以揭示对水生生物的潜在风险。为了真正评估与微量元素相关的生态风险,有必要使用从环境中提取并原位暴露于微量元素的生物指示剂。F1 组分中的铜含量与贻贝组织中这些金属的含量呈显着正相关。生物测试和化学分析都可以揭示对水生生物的潜在风险。为了真正评估与微量元素相关的生态风险,有必要使用从环境中提取并原位暴露于微量元素的生物指示剂。F1 组分中的铜含量与贻贝组织中这些金属的含量呈显着正相关。生物测试和化学分析都可以揭示对水生生物的潜在风险。为了真正评估与微量元素相关的生态风险,有必要使用从环境中提取并原位暴露于微量元素的生物指示剂。

更新日期:2021-05-10
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