Occurrence, risk assessment, and source of heavy metals in Liaohe River Protected Area from the watershed of Bohai Sea, China

Haixia Li; Li Xu; Nana Feng; Anxiang Lu; Wei Chen; Yupeng Wang

doi:10.1016/j.marpolbul.2021.112489

Occurrence, risk assessment, and source of heavy metals in Liaohe River Protected Area from the watershed of Bohai Sea, China

Mar Pollut Bull. 2021 Aug:169:112489. doi: 10.1016/j.marpolbul.2021.112489. Epub 2021 May 26.

Authors

Haixia Li¹, Li Xu², Nana Feng³, Anxiang Lu³, Wei Chen⁴, Yupeng Wang⁵

Affiliations

¹ College of Resources and Environment, Anhui Agricultural University, Hefei 230036, Ahui, China; Beijing Research Center for Agricultural Standards and Testing, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China; Beijing Municipal Key Laboratory of Agriculture Environment Monitoring, Beijing 100097, China.
² Beijing Research Center for Agricultural Standards and Testing, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China; Beijing Municipal Key Laboratory of Agriculture Environment Monitoring, Beijing 100097, China. Electronic address: xuliforever@163.com.
³ Beijing Research Center for Agricultural Standards and Testing, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China; Beijing Municipal Key Laboratory of Agriculture Environment Monitoring, Beijing 100097, China.
⁴ School of Environmental Studies, China University of Geosciences, Wuhan 430078, China.
⁵ College of Resources and Environment, Anhui Agricultural University, Hefei 230036, Ahui, China. Electronic address: ypengwang@hotmail.com.

PMID: 34049064
DOI: 10.1016/j.marpolbul.2021.112489

Abstract

The occurrence, ecological risk, and source of heavy metals in the Liaohe River Protected Area from the watershed of the Bohai Sea were investigated. The maximum concentrations of Cu, Zn, Ni, Cd, Cr, Pb, and As in water were 8.50, 25.22, 3.80, 0.14, 1.76, 8.52, and 3.19 μg/L, respectively. The maximum concentrations of Cu, Zn, Ni, Cd, Cr, Pb, and As in sediment were 27.0, 109, 33.2, 0.56, 318, 43.7, and 29.3 mg/kg, respectively. The percentages of soil samples with observed concentrations above background values were 31.25%, 31.25%, 25%, 28.13%, 56.25%, 34.38%, and 37.5% for Cu, Cr, Zn, Ni, Cd, Pb, and As, respectively. I_geo suggested that sediments were polluted with Cd, Pb, As, Cr, and Zn, whereas soils were contaminated with all seven metals. Potential ecological risk index values exhibited that sites L25 and L12 were classified as moderately polluted in sediment and soil, respectively.

Keywords: Bohai Sea; Heavy metal; Risk assessment; Sediment; Soil; Water.

MeSH terms

China
Environmental Monitoring
Geologic Sediments
Metals, Heavy* / analysis
Risk Assessment
Rivers
Water Pollutants, Chemical* / analysis

Substances

Metals, Heavy
Water Pollutants, Chemical