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Sy Ibrahima Cissé Birane Ndao Babacar Touré Mory Diouf Abdoul Aziz Sarr Mamadou Adama Ndiaye Ousmane Ndiaye Youssoupha Badiane Daouda Lalou Richard Janicot Serge Ndione Jacques-André 《Environmental science and pollution research international》2022,29(55):83365-83377
Environmental Science and Pollution Research - The Sahelian zone of Senegal experienced heat waves in the previous decades, such as 2013, 2016 and 2018 that were characterised by temperatures... 相似文献
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Patience Ngelinkoto Florian Thevenon Naresh Devarajan Niane Birane Jeef Maliani Alain Buluku 《毒物与环境化学》2013,95(1):48-57
In this study, the concentrations of some metals in sediments and consumable fish from the Kwilu Ngongo River, province of Bas-Congo, Democratic Republic of Congo, are investigated. The digested muscle tissue, whole fish, and river sediment samples were subjected to trace element analysis by inductively coupled plasma mass spectroscopy and by using an automatic mercury analyzer. The highest values of trace metals in fish muscle tissue were found for Cr, Cu, Pb and Hg, with maximum values of 8.6 (Cr), 15.7 (Cu), 6.0 (Pb) and 3.3 (Hg) mg kg?1. These values are higher than maximum tolerable limits recommended by the European Commission Regulation for Food. The highest metal concentrations in sediments were 81 (Cr), 86 (Cu), 21 (Sb), 41 (Pb), and 0.8 (Hg) mg kg?1. Sediment toxicity tests using benthic crustaceans (ostracods) revealed mortality rates of up to 30% after six days of exposure to the sediments near the sugarcane industry outlet pipe discharge. The contamination of the sediments and fishes by the elements and the bio-accumulation of mercury in fish most likely arise from the adjacent agricultural fields where intensive sugarcane cultivation since 1925 has probably contaminated the soils through the long-term use of fertilizers and pesticides. 相似文献
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