Heavy metal toxicity in the water column and benthic sediments of a degraded tropical stream.,Ecotoxicology and Environmental Safety

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Heavy metal toxicity in the water column and benthic sediments of a degraded tropical stream.
Ecotoxicology and Environmental Safety ( IF 6.8 ) Pub Date : 2020-01-06 , DOI: 10.1016/j.ecoenv.2019.110153
Emmanuel O Akindele ₁ , Omobukola D Omisakin ₁ , Oluwagbemiga A Oni ₁ , Olanrewaju O Aliu ₂ , Gbenga E Omoniyi ₃ , Oluwaseun T Akinpelu ₄

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Agriculture and other anthropogenic activities on riparian corridors pose a great ecotoxicological risk to freshwater ecosystem and human health. Using the atomic absorption spectroscopy, concentrations of heavy metals (Cd, Cu, Fe, Zn, Pb and As) in the water column and benthic sediments of a degraded tropical stream (Opa Stream, Ile-Ife, Nigeria), were assessed with a view to determining the stream's health status. Three metals (Cu, Pb, and As) showed significant positive correlations between concentrations in the water column and the benthic sediments. All but one heavy metal (i.e. Zn) had reached disturbing concentrations in the stream's water column and exceeded their recommended limits in surface freshwaters. The geo-accumulation index (Igeo) and contamination factor (CF) indicated that the stream was moderately contaminated with Cd (0

中文翻译：

降解的热带溪流的水柱和底栖沉积物中的重金属毒性。

河岸走廊上的农业和其他人为活动对淡水生态系统和人类健康构成巨大的生态毒理风险。使用原子吸收光谱法，用a评估了水柱和退化的热带河流（奥帕河，伊利-Ife，尼日利亚）底栖沉积物中重金属（Cd，Cu，Fe，Zn，Pb和As）的浓度。查看以确定流的健康状态。三种金属（铜，铅和砷）在水柱和底栖沉积物中的浓度之间显示出显着的正相关。除一种重金属（即Zn）外，所有其他金属均已在河流水柱中达到令人不安的浓度，并超过了其在表层淡水中的建议限值。

更新日期：2020-01-07

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