Speciation, Distribution and Risk Assessment of Metals in Sediments from a Water Body Replenished by Effluent from a Wastewater Treatment Plant.
Bull Environ Contam Toxicol
; 102(4): 525-530, 2019 Apr.
Article
en En
| MEDLINE
| ID: mdl-30734841
To assess the status and risk of metal pollution in landscape water body replenished by wastewater treatment plant effluent, the distribution of metals in sediments from three regions [regulation pond (RP), wetland lake (WL), and main lake (ML)] of Harbor Lake, Tianjin, China, was characterized. Higher levels of all metals (except Cr and Pb) were observed in RP sediments. As, Cr, Cu, Ni, Pb, and Zn were mainly bound to organic matter and sulfide (F3) and residual fractions (F4), while the exchangeable and carbonate fraction (F1) and Fe/Mn oxide fraction (F2) were the dominant forms for Cd. Additionally, finding showed that the overall risk of sediments in aquatic systems was affected by both metal toxicity and metal fractionation. Thus, according to a modified risk assessment code (RAC), the potential adverse effect of metals in sediments was medium (although As, Cd, Ni, and Zn had high mobility risks based on the RAC), decreasing in the order RP > WL > ML.
Palabras clave
Texto completo:
1
Bases de datos:
MEDLINE
Asunto principal:
Contaminantes Químicos del Agua
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Monitoreo del Ambiente
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Sedimentos Geológicos
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Metales Pesados
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Aguas Residuales
Tipo de estudio:
Etiology_studies
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Risk_factors_studies
País/Región como asunto:
Asia
Idioma:
En
Revista:
Bull Environ Contam Toxicol
Año:
2019
Tipo del documento:
Article