Probabilistic risk assessment of fifteen metal(loid)s and their mixtures in surface sediment of Hongze Lake (China) using the diffusive gradients in thin films (DGT) technique
Freshwater lakes in China face increasing environmental pressures due to rapid urbanization and industrialization, with metal pollution emerging as a significant concern. Despite this, the ecological risk assessment of metal mixtures in lake sediment remains limited. The current study addresses this...
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KeAi Communications Co., Ltd.
2025-06-01
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| Series: | International Journal of Sediment Research |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1001627925000071 |
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| author | Changjiang Ma Yang-Guang Gu Richard W. Jordan Shi-Jun Jiang Meirong Wang |
| author_facet | Changjiang Ma Yang-Guang Gu Richard W. Jordan Shi-Jun Jiang Meirong Wang |
| author_sort | Changjiang Ma |
| collection | DOAJ |
| description | Freshwater lakes in China face increasing environmental pressures due to rapid urbanization and industrialization, with metal pollution emerging as a significant concern. Despite this, the ecological risk assessment of metal mixtures in lake sediment remains limited. The current study addresses this gap by utilizing the diffusive gradients in thin films (DGT) technique to investigate the distribution and ecological risk of metals and arsenic in surface sediment of Hongze Lake, China. Substantial variations in metal concentrations were found across sampling sites, with average values of manganese (Mn) (1,730.56 μg/L) and iron (Fe) (930.58 μg/L) being notably high. The ecological risk quotient (RQ) values for Mn and Fe exceeded 1 at all sites, indicating substantial ecological risks, while copper (Cu) and arsenic (As) had RQ values near or above 1 at most sites. A joint probabilistic risk assessment using the species sensitivity distribution (SSD) method revealed a 30.31% probability of concurrent toxic effects on aquatic organisms. These results highlight the pressing need for proactive measures to mitigate metal contamination risks in Hongze Lake. The current study provides critical insight into the ecological risks associated with metal pollution and underscores the importance of effective environmental management to preserve the lake's ecosystem. |
| format | Article |
| id | doaj-art-eae343570bbc4e7a85536dd816ef4da7 |
| institution | DOAJ |
| issn | 1001-6279 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | KeAi Communications Co., Ltd. |
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| series | International Journal of Sediment Research |
| spelling | doaj-art-eae343570bbc4e7a85536dd816ef4da72025-08-20T03:09:39ZengKeAi Communications Co., Ltd.International Journal of Sediment Research1001-62792025-06-0140351252210.1016/j.ijsrc.2025.01.007Probabilistic risk assessment of fifteen metal(loid)s and their mixtures in surface sediment of Hongze Lake (China) using the diffusive gradients in thin films (DGT) techniqueChangjiang Ma0Yang-Guang Gu1Richard W. Jordan2Shi-Jun Jiang3Meirong Wang4Center for Ecological Environment Monitoring and Scientific Research, Huaihe Valley Ecology and Environment Administration, Ministry of Ecology and Environment, Bengbu 233000, ChinaSouth China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510300, China; Faculty of Science, Yamagata University, Yamagata 990-8560, Japan; Guangdong Provincial Key Laboratory of Fishery Ecology and Environment, Guangzhou 510300, China; Corresponding author. South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510300, China.Faculty of Science, Yamagata University, Yamagata 990-8560, JapanState Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou 570228, ChinaCenter for Ecological Environment Monitoring and Scientific Research, Huaihe Valley Ecology and Environment Administration, Ministry of Ecology and Environment, Bengbu 233000, ChinaFreshwater lakes in China face increasing environmental pressures due to rapid urbanization and industrialization, with metal pollution emerging as a significant concern. Despite this, the ecological risk assessment of metal mixtures in lake sediment remains limited. The current study addresses this gap by utilizing the diffusive gradients in thin films (DGT) technique to investigate the distribution and ecological risk of metals and arsenic in surface sediment of Hongze Lake, China. Substantial variations in metal concentrations were found across sampling sites, with average values of manganese (Mn) (1,730.56 μg/L) and iron (Fe) (930.58 μg/L) being notably high. The ecological risk quotient (RQ) values for Mn and Fe exceeded 1 at all sites, indicating substantial ecological risks, while copper (Cu) and arsenic (As) had RQ values near or above 1 at most sites. A joint probabilistic risk assessment using the species sensitivity distribution (SSD) method revealed a 30.31% probability of concurrent toxic effects on aquatic organisms. These results highlight the pressing need for proactive measures to mitigate metal contamination risks in Hongze Lake. The current study provides critical insight into the ecological risks associated with metal pollution and underscores the importance of effective environmental management to preserve the lake's ecosystem.http://www.sciencedirect.com/science/article/pii/S1001627925000071Inclusion-exclusion principleAquatic biotaDGT-labile metalsEcological riskMetal mixturesFreshwater lake |
| spellingShingle | Changjiang Ma Yang-Guang Gu Richard W. Jordan Shi-Jun Jiang Meirong Wang Probabilistic risk assessment of fifteen metal(loid)s and their mixtures in surface sediment of Hongze Lake (China) using the diffusive gradients in thin films (DGT) technique International Journal of Sediment Research Inclusion-exclusion principle Aquatic biota DGT-labile metals Ecological risk Metal mixtures Freshwater lake |
| title | Probabilistic risk assessment of fifteen metal(loid)s and their mixtures in surface sediment of Hongze Lake (China) using the diffusive gradients in thin films (DGT) technique |
| title_full | Probabilistic risk assessment of fifteen metal(loid)s and their mixtures in surface sediment of Hongze Lake (China) using the diffusive gradients in thin films (DGT) technique |
| title_fullStr | Probabilistic risk assessment of fifteen metal(loid)s and their mixtures in surface sediment of Hongze Lake (China) using the diffusive gradients in thin films (DGT) technique |
| title_full_unstemmed | Probabilistic risk assessment of fifteen metal(loid)s and their mixtures in surface sediment of Hongze Lake (China) using the diffusive gradients in thin films (DGT) technique |
| title_short | Probabilistic risk assessment of fifteen metal(loid)s and their mixtures in surface sediment of Hongze Lake (China) using the diffusive gradients in thin films (DGT) technique |
| title_sort | probabilistic risk assessment of fifteen metal loid s and their mixtures in surface sediment of hongze lake china using the diffusive gradients in thin films dgt technique |
| topic | Inclusion-exclusion principle Aquatic biota DGT-labile metals Ecological risk Metal mixtures Freshwater lake |
| url | http://www.sciencedirect.com/science/article/pii/S1001627925000071 |
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