Seasonal co-pollution characteristics of parent-PAHs and alkylated-PAHs in karst mining area soil of Guizhou, Southwest China
The research on polycyclic aromatic hydrocarbons (PAHs) in karst soil mainly focuses on 16 kinds of parent-PAHs (p- PAHs), and little attention is given to alkylated-PAHs (a-PAHs) with higher concentration and greater toxicity. Five surface soils of coal mining area and their surrounding areas in ka...
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Frontiers Media S.A.
2022-09-01
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| Series: | Frontiers in Environmental Science |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fenvs.2022.990471/full |
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| author | Xianjin An Xianjin An Wei Li Jiacheng Lan Jiacheng Lan Xinyue Di Muhammad Adnan Muhammad Adnan |
| author_facet | Xianjin An Xianjin An Wei Li Jiacheng Lan Jiacheng Lan Xinyue Di Muhammad Adnan Muhammad Adnan |
| author_sort | Xianjin An |
| collection | DOAJ |
| description | The research on polycyclic aromatic hydrocarbons (PAHs) in karst soil mainly focuses on 16 kinds of parent-PAHs (p- PAHs), and little attention is given to alkylated-PAHs (a-PAHs) with higher concentration and greater toxicity. Five surface soils of coal mining area and their surrounding areas in karst area were sampled as subject investigated, and the spatiotemporal pollution characteristics of p-PAHs and a-PAHs were analyzed to discuss the impact of karst soil properties and environmental conditions on the migration of a-PAHs. The research results showed that the pollution concentration of a-PAHs in the soil of the southwestern karst area, especially the coal mining area, was significantly higher compared to the 16 kinds of p-PAHs, and the average concentration of the p-PAHs was 177.29 ± 37.36 ng/g; the concentration of a-PAHs was 346.87 ± 104.91 ng/g; the concentration of PAHs presented a seasonal pattern of that in winter > spring > autumn > summer. At the same time, seasonal rainfall could affect and change the occurrence state of PAHs in karst soils, but the effect on p-PAHs was weaker than on a-PAHs. The concentration of PAHs in the coal mining area and forest soil were 651.68 ng/g and 755.38 ng/g, respectively, so they belonged to contaminated soil, while the concentrations of two cultivated soil and abandoned soil were 475.51 ng/g, 367.58 ng/g and 370.63 ng/g, respectively, belonging to weakly contaminated. Toxicity assessment showed that p-BaP with a maximum toxic equivalent of 62.35 ng/g, C1-BaP (42.09 ng/g), DaA (37.82 ng/g) and C1-3 BaA (25.91 ng/g) were toxic PAHs with higher risk. The results of the correlation study showed that soil organic carbon, soil clay and soil calcium content were the dominant factors affecting the spatiotemporal distribution of PAHs of soils in karst coal mining areas and their surrounding areas. The research can provide data guidance for the management, control and restoration of soil pollution in karst areas, and offer a reference for Guizhou province to implement the big-ecological strategy. |
| first_indexed | 2024-04-11T12:19:41Z |
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| id | doaj.art-b86937be612648318f4e15a0e6c705fd |
| institution | Directory Open Access Journal |
| issn | 2296-665X |
| language | English |
| last_indexed | 2024-04-11T12:19:41Z |
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| series | Frontiers in Environmental Science |
| spelling | doaj.art-b86937be612648318f4e15a0e6c705fd2022-12-22T04:24:07ZengFrontiers Media S.A.Frontiers in Environmental Science2296-665X2022-09-011010.3389/fenvs.2022.990471990471Seasonal co-pollution characteristics of parent-PAHs and alkylated-PAHs in karst mining area soil of Guizhou, Southwest ChinaXianjin An0Xianjin An1Wei Li2Jiacheng Lan3Jiacheng Lan4Xinyue Di5Muhammad Adnan6Muhammad Adnan7School of Karst Science, Guizhou Normal University, Guiyang, ChinaState Engineering Technology Institute for Karst Desertification Control, Guiyang, ChinaCollege of Biology and Environmental Engineering, Guiyang University, Guiyang, ChinaSchool of Karst Science, Guizhou Normal University, Guiyang, ChinaState Engineering Technology Institute for Karst Desertification Control, Guiyang, ChinaSchool of Geography and Environmental Engineering, Gannan Normal University, Ganzhou, ChinaState Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, ChinaUniversity of Chinese Academy of Sciences, Beijing, ChinaThe research on polycyclic aromatic hydrocarbons (PAHs) in karst soil mainly focuses on 16 kinds of parent-PAHs (p- PAHs), and little attention is given to alkylated-PAHs (a-PAHs) with higher concentration and greater toxicity. Five surface soils of coal mining area and their surrounding areas in karst area were sampled as subject investigated, and the spatiotemporal pollution characteristics of p-PAHs and a-PAHs were analyzed to discuss the impact of karst soil properties and environmental conditions on the migration of a-PAHs. The research results showed that the pollution concentration of a-PAHs in the soil of the southwestern karst area, especially the coal mining area, was significantly higher compared to the 16 kinds of p-PAHs, and the average concentration of the p-PAHs was 177.29 ± 37.36 ng/g; the concentration of a-PAHs was 346.87 ± 104.91 ng/g; the concentration of PAHs presented a seasonal pattern of that in winter > spring > autumn > summer. At the same time, seasonal rainfall could affect and change the occurrence state of PAHs in karst soils, but the effect on p-PAHs was weaker than on a-PAHs. The concentration of PAHs in the coal mining area and forest soil were 651.68 ng/g and 755.38 ng/g, respectively, so they belonged to contaminated soil, while the concentrations of two cultivated soil and abandoned soil were 475.51 ng/g, 367.58 ng/g and 370.63 ng/g, respectively, belonging to weakly contaminated. Toxicity assessment showed that p-BaP with a maximum toxic equivalent of 62.35 ng/g, C1-BaP (42.09 ng/g), DaA (37.82 ng/g) and C1-3 BaA (25.91 ng/g) were toxic PAHs with higher risk. The results of the correlation study showed that soil organic carbon, soil clay and soil calcium content were the dominant factors affecting the spatiotemporal distribution of PAHs of soils in karst coal mining areas and their surrounding areas. The research can provide data guidance for the management, control and restoration of soil pollution in karst areas, and offer a reference for Guizhou province to implement the big-ecological strategy.https://www.frontiersin.org/articles/10.3389/fenvs.2022.990471/fullkarstsoilparent-PAHsalkylated-PAHsseasonal variationspollution characteristics |
| spellingShingle | Xianjin An Xianjin An Wei Li Jiacheng Lan Jiacheng Lan Xinyue Di Muhammad Adnan Muhammad Adnan Seasonal co-pollution characteristics of parent-PAHs and alkylated-PAHs in karst mining area soil of Guizhou, Southwest China Frontiers in Environmental Science karst soil parent-PAHs alkylated-PAHs seasonal variations pollution characteristics |
| title | Seasonal co-pollution characteristics of parent-PAHs and alkylated-PAHs in karst mining area soil of Guizhou, Southwest China |
| title_full | Seasonal co-pollution characteristics of parent-PAHs and alkylated-PAHs in karst mining area soil of Guizhou, Southwest China |
| title_fullStr | Seasonal co-pollution characteristics of parent-PAHs and alkylated-PAHs in karst mining area soil of Guizhou, Southwest China |
| title_full_unstemmed | Seasonal co-pollution characteristics of parent-PAHs and alkylated-PAHs in karst mining area soil of Guizhou, Southwest China |
| title_short | Seasonal co-pollution characteristics of parent-PAHs and alkylated-PAHs in karst mining area soil of Guizhou, Southwest China |
| title_sort | seasonal co pollution characteristics of parent pahs and alkylated pahs in karst mining area soil of guizhou southwest china |
| topic | karst soil parent-PAHs alkylated-PAHs seasonal variations pollution characteristics |
| url | https://www.frontiersin.org/articles/10.3389/fenvs.2022.990471/full |
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