Accumulation risk and sources of heavy metals in supratidal wetlands along the west coast of the Bohai Sea.

ABSTRACT: The heavy metals Al, Cr, Cu, Ni, Pb, Zn, Fe, Mn, As, and Cd in the rainfall-driven supratidal wetlands along the west coast of the Bohai Sea (the areas are named site 1, site 2, site 3, and site 4 from south to north in the gradient in this study) are tested for their accumulation risks and sources. Results show that the distribution and enrichment of the heavy metals in the supratidal wetlands are lower in site 1 than in sites 2-4. The risk indices (RIs) of all sites are less than 150, indicating low-moderate risk. However, the RI values are primarily dominated by the risk indices (E _r ⁱ ) of As and Cd. The accumulative contribution values of E _r ⁱ -As and E _r ⁱ -Cd in sites 1, 2, 3

SUBMITTER: Liu F 

PROVIDER: S-EPMC9072157 | biostudies-literature | 2019 Sep

REPOSITORIES: biostudies-literature