Rare earth and precious elements in the urban sewage sludge and lake surface sediments under anthropogenic influence in the Republic of Benin
| Autor: | Daouda Mama, Chang-Ping Yu, Biaou Dimon, Arouna Yessoufou, Fidèle Suanon, Qian Sun, Binessi Edouard Ifon, Comlan Achille Dedjiho |
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| Rok vydání: | 2017 |
| Předmět: |
Pollution
Geologic Sediments 010504 meteorology & atmospheric sciences media_common.quotation_subject Rare earth 010501 environmental sciences Management Monitoring Policy and Law 01 natural sciences Mass Spectrometry Metal Metals Heavy Ecotoxicology Benin Ecosystem 0105 earth and related environmental sciences General Environmental Science media_common Sewage Metallurgy Sediment General Medicine Contamination Lakes visual_art Environmental chemistry visual_art.visual_art_medium Environmental science Metals Rare Earth Enrichment factor Sludge Water Pollutants Chemical Environmental Monitoring |
| Zdroj: | Environmental monitoring and assessment. 189(12) |
| ISSN: | 1573-2959 |
| Popis: | Nowadays, sewage sludge and water bodies are subjected to heavy pollution due to rapid population growth and urbanization. Heavy metal pollution represents one of the main challenges threatening our environment and the ecosystem. The present work aims to evaluate the contamination state of the sewage sludge and lake sediments in the Republic of Benin. Twenty metallic elements including 15 rare earth elements (Eu, Sb, Cs, Nd, Pr, Gd, La, Ce, Tb, Sm, Dy, Ho, Eu, Yb, and Lu) and five precious elements (Ag, Au, Pd, Pt, and Ru) were investigated using inductive plasma-mass spectrometry. Results showed broad range concentrations of the elements. Ce, La, and Nd were present in both sediments and sewage sludge at concentrations ranging 5.80–41.30 mg/kg dry matter (DM), 3.23–15.60 mg/kg DM, and 2.74–19.26 mg/kg DM, respectively. Pr, Sm, Gd, Tb, Dy, Eu, Er, Yb, Cs, Ho, and Tm concentrations were lower (0.02–5.94 mg/kg DM). Among precious elements, Ag was detected at the highest concentration in all sites (0.43–4.72 mg/kg DM), followed by Pd (0.20–0.57 mg/kg DM) and Au (0.01–0.57 mg/kg DM). Ru and Pt concentrations were |
| Databáze: | OpenAIRE |
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