Source Apportionment and Ecological Risk of Heavy Metals in Taihu Lake: A Spatiotemporal Perspective

• DOI: 10.2139/ssrn.4680321
• Publication Date: 2023-12-31T02:18:41Z
• Authors: Guangjing Bao; Chao Ji; Dawei Hou; Aiping Deng; Fazhi Li
• Keywords: Apportionment

To determine the source apportionment and ecological risk of heavy metals in water from a spatiotemporal perspective, 7 samples were monitored 2018 to 2020 Taihu Lake. The correlation analysis principal component employed identify sources metals, temporal spatial characteristics analyzed using Mann-Kendall test, mean gravity center, standard-deviation ellipse. results indicated an increase median concentration following order: Cd < Pb Hg Cu As Ni Zn, These primarily derived industrial agricultural activities. Overall, risks posed by deemed acceptable, with exception Hg, which showed considerable potential risk. Furthermore, exhibited significant decreasing trend, Z-values passing 95% confidence interval significance except for S3. centers located within ellipse center coordinates (120.2553, 31.3718), major axis 44525m, minor 28225m, direction 0.4463°. This study contributes enrichment research perspectives provides valuable insights development mitigation strategies