Spatial distribution of potentially harmful trace elements and ecological risk assessment in Zhanjiang mangrove wetland, South China.
Mar Pollut Bull
; 182: 114033, 2022 Sep.
Article
em En
| MEDLINE
| ID: mdl-35969905
ABSTRACT
Global mangrove wetlands face increasing anthropogenic impacts along the coast. The Zhanjiang mangrove wetland is the largest and adjacent to the most developed bay area in China. Surface sediments were collected in different plant transit and used for potentially harmful trace elements (PHTEs) measurement. Mean contents of Hg, Cr, Ni, Cu, Zn, As, Cd and Pb were 0.01â¯mg/kg, 56.16â¯mg/kg, 10.06â¯mg/kg, 9.61â¯mg/kg, 43.58â¯mg/kg, 8.76â¯mg/kg, 0.25â¯mg/kg, 28.12â¯mg/kg. Most of the PHTEs were slightly enriched but the Cd pollution is significant, and the potential ecological risk is moderate. The risk of the mangrove wetland is larger than the grassland and the farmland. The PCA and PMF indicate Hg, Ni, Cu, Zn, As, and Pb mainly originated from local anthropogenic activities, Cr originated from the natural geological process, and Cd mainly originated from atmospheric deposition of regional industrial pollution. In view of the impact of surrounding industry and agriculture and the signs of PHTEs pollution, it is necessary to implement the wetland protection law more strictly to truly realize the construction of ecological civilization. This provides a valid reference for the wetland conservation and management in coastal cities.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Contexto em Saúde:
2_ODS3
Base de dados:
MEDLINE
Assunto principal:
Oligoelementos
/
Metais Pesados
/
Mercúrio
Tipo de estudo:
Etiology_studies
/
Risk_factors_studies
País/Região como assunto:
Asia
Idioma:
En
Revista:
Mar Pollut Bull
Ano de publicação:
2022
Tipo de documento:
Article