Characteristics and Source Identification of Heavy Metal Pollution in a Certain Industrial Park in Guangdong Province
Taking a certain industrial park in Guangdong province as an example,a study was conducted on the possible sources and pollution levels of heavy metals in the wetlands of the region.Firstly,the concentrations of 12 heavy metals in the sediment of industrial park wetlands were analyzed,and the pollution level of industrial park wetlands was evaluated using geological accumulation index(Igeo)and enrichment factor(EF).The results showed that anthropogenic Ga,Pb,and Sb were heavy metal pollutants diffused in industrial park wetlands.Pearson correlation matrix analysis shows that sewage and runoffare the main sources of heavy metals in industrial park wetlands,and the continuous discharge of river overflow is also the main source of heavy metals.In addition,non point sources of heavy metal pollution such as industrial fly ash,traffic emissions,and agricultural pollution cannot be ignored.Therefore,in accordance with the national guidelines for the development of ecological parks,efforts should be intensified to formulate stricter environmental regulations.
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