干旱区生态环境知识资源中心(Arid): Seasonal co-pollution characteristics of parent-PAHs and alkylated-PAHs in karst mining area soil of Guizhou, Southwest China

Arid

DOI	10.3389/fenvs.2022.990471
	Seasonal co-pollution characteristics of parent-PAHs and alkylated-PAHs in karst mining area soil of Guizhou, Southwest China
	An, Xianjin; Li, Wei; Lan, Jiacheng; Di, Xinyue; Adnan, Muhammad
通讯作者	Li, W
来源期刊	FRONTIERS IN ENVIRONMENTAL SCIENCE
EISSN	2296-665X
出版年	2022
卷号	10
英文摘要	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.
英文关键词	karst soil parent-PAHs alkylated-PAHs seasonal variations pollution characteristics
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000892147300001
WOS关键词	POLYCYCLIC AROMATIC-HYDROCARBONS ; UNDERGROUND RIVER SYSTEM ; AGRICULTURAL SOILS ; ROCKY DESERTIFICATION ; SURFACE SOIL ; RISK ; EMISSION ; CONTAMINATION ; FRACTIONS ; SEDIMENTS
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/392762
推荐引用方式 GB/T 7714	An, Xianjin,Li, Wei,Lan, Jiacheng,et al. Seasonal co-pollution characteristics of parent-PAHs and alkylated-PAHs in karst mining area soil of Guizhou, Southwest China[J],2022,10.
APA	An, Xianjin,Li, Wei,Lan, Jiacheng,Di, Xinyue,&Adnan, Muhammad.(2022).Seasonal co-pollution characteristics of parent-PAHs and alkylated-PAHs in karst mining area soil of Guizhou, Southwest China.FRONTIERS IN ENVIRONMENTAL SCIENCE,10.
MLA	An, Xianjin,et al."Seasonal co-pollution characteristics of parent-PAHs and alkylated-PAHs in karst mining area soil of Guizhou, Southwest China".FRONTIERS IN ENVIRONMENTAL SCIENCE 10(2022).