Your browser doesn't support javascript.
loading
Pollution and mobility of heavy metals in the soils of a typical agricultural zone in eastern China.
Zhang, Jie; Yang, Liyuan; Liu, Ye; Xing, Menghan; Wu, Yanhong; Bing, Haijian.
Afiliação
  • Zhang J; School of Water Conservancy and Environment, University of Jinan, Jinan, 250022, China.
  • Yang L; Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, 610299, China.
  • Liu Y; School of Water Conservancy and Environment, University of Jinan, Jinan, 250022, China.
  • Xing M; Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, 610299, China.
  • Wu Y; School of Water Conservancy and Environment, University of Jinan, Jinan, 250022, China.
  • Bing H; Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, 610299, China.
Environ Geochem Health ; 46(3): 91, 2024 Feb 17.
Article em En | MEDLINE | ID: mdl-38367072
ABSTRACT
The pollution of heavy metals (HMs) in agricultural soils profoundly threatens national food safety, and the mobility and environmental behaviors of HMs are closely implicated in crop safety. Here, we assessed the pollution level and mobility of ten HMs and explored their environmental behaviors in the soils of three different land uses from a main crop production zone in eastern China. The concentrations of HMs in the soils were higher in the farmland than the woodland and wasteland, and Cd showed a relatively higher pollution and ecological risk levels compared to other metals. Cadmium was dominated by the reducible (41%) and exchangeable (23%) fractions, and the rest of HMs were mainly in the residual fraction (> 60%). The significant correlation between the exchangeable and DGT-labile Cd indicates relatively higher mobility of Cd in the soils. Soil pH, organic matters and mineral elements had significant correlation with the exchangeable and reducible fractions of most of the HMs (e.g., Cd, Co, Mn, Ni, Pb and V; p < 0.05), indicating their good predictors of the HMs mobility. However, this was not the case for the DGT-labile fraction, which suggests a marked difference in the controlling mechanisms of the mobility versus potential bioavailability of HMs in the soils. The results of this study indicate that both the chemically extracted fractions and the bioavailable fractions of HMs need be considered when effectively assessing the safety of agricultural soils.
Assuntos
Palavras-chave

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Poluentes do Solo / Metais Pesados País/Região como assunto: Asia Idioma: En Ano de publicação: 2024 Tipo de documento: Article

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Poluentes do Solo / Metais Pesados País/Região como assunto: Asia Idioma: En Ano de publicação: 2024 Tipo de documento: Article