干旱区生态环境知识资源中心(Arid): Occurrence, sources and spatial distribution of n-alkanes in surface soils from the Amu Darya Delta, Uzbekistan, arid Central Asia

Arid

DOI	10.1016/j.envres.2022.114063
	Occurrence, sources and spatial distribution of n-alkanes in surface soils from the Amu Darya Delta, Uzbekistan, arid Central Asia
	Zhan, Shuie; Wu, Jinglu; Zhang, Hongliang; Jin, Miao
通讯作者	Wu, JL
来源期刊	ENVIRONMENTAL RESEARCH
ISSN	0013-9351
EISSN	1096-0953
出版年	2022
卷号	214
英文摘要	Central Asia (CA) has attracted global attention because of either water scarcity or ecosystem degradation. The Amu Darya Delta (ADD), one of the most important oases in CA, is endowed with valuable wetlands and biological resources that provide good ecosystem services to inhabitants. However, the region has experienced climate warming and large-scale anthropogenic changes since the last century. To assess the influences of anthropogenic interventions on the soil environment in this area, surface soil samples collected from the ADD were analysed for aliphatic hydrocarbon fractions and five heavy metals (HMs; including Cd, Zn, Cu, Ni and V). The results indicated that the n-alkanes extracted from surface soils were composed of homologous series from C14 to C35. Relatively high abundances of short-chain n-alkanes (n-C33) occurred in most surface soils, which might be a sign of a hot and arid climatic environment. Notably, almost all samples presented a clear even carbon dominance of short-chain n-alkanes, especially for cluster 1, which possibly represented the influence of hydrocarbon contamination and highly saline carbonate environments in addition to bacterial degradation. The biomarker indices and HM enrichment index indicated greater effects of crude oil pollution on cluster 1 (specifically samples 2, 4, 5, 6, 13, 16 and 34) and anthropogenic activities such as traffic emissions and agricultural drainage on cluster 3 samples. The results of this study provide evidence that the n-alkane composition and abundance in surface soils respond sensitively to anthropogenic interventions, arid climate and petroleum hydrocarbon pollution.
英文关键词	n-Alkanes Sources Anthropogenic intervention Heavy metals Amu Darya Delta
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000860717600002
WOS关键词	POLYCYCLIC AROMATIC-HYDROCARBONS ; ALIPHATIC-HYDROCARBONS ; ORGANIC GEOCHEMISTRY ; OIL POLLUTION ; TRACE-METALS ; SEDIMENTS ; WATER ; CHINA ; LAKE ; MANAGEMENT
WOS类目	Environmental Sciences ; Public, Environmental & Occupational Health
WOS研究方向	Environmental Sciences & Ecology ; Public, Environmental & Occupational Health
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/392500
推荐引用方式 GB/T 7714	Zhan, Shuie,Wu, Jinglu,Zhang, Hongliang,et al. Occurrence, sources and spatial distribution of n-alkanes in surface soils from the Amu Darya Delta, Uzbekistan, arid Central Asia[J],2022,214.
APA	Zhan, Shuie,Wu, Jinglu,Zhang, Hongliang,&Jin, Miao.(2022).Occurrence, sources and spatial distribution of n-alkanes in surface soils from the Amu Darya Delta, Uzbekistan, arid Central Asia.ENVIRONMENTAL RESEARCH,214.
MLA	Zhan, Shuie,et al."Occurrence, sources and spatial distribution of n-alkanes in surface soils from the Amu Darya Delta, Uzbekistan, arid Central Asia".ENVIRONMENTAL RESEARCH 214(2022).