干旱区生态环境知识资源中心(Arid): Attenuation of organic pollutants and the effects of salinity and seasonality in a Mediterranean micro-estuary

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DOI	10.1016/j.scitotenv.2022.158919
	Attenuation of organic pollutants and the effects of salinity and seasonality in a Mediterranean micro-estuary
	Topaz, Tom
通讯作者	Topaz, T
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2023
卷号	856
英文摘要	Micro-estuaries are small ubiquitous transitional water bodies that are often located in semi-arid zones. Unlike the vastly studied large estuaries, micro-estuaries lack the ability to dilute and contain pollution from point and non -point sources due to low natural water discharges. Therefore, these diverse ecological systems are susceptible to pol-lutant loads due to prolonged water residence time and complex geochemical dynamics. Although this elevated an-thropogenic stress limits their potential to provide ecological and recreational services, micro-estuaries have some traits similar to those found in wetlands, which provide a natural potential to retain and mitigate organic pollutants. A two consecutive years study conducted at the Alexander micro-estuary tracked the influx and outflux of a large or-ganic pollutant mixture during base-flow and flood events. During the research period, 165 kg of active ingredients entered the micro-estuary and 160 kg flowed out to the Mediterranean Sea, suggesting negligible net attenuation. However, this broad picture conceals inner shifts in pollutant mixture loads, which contained 46 pesticides and 19 pharmaceuticals. Only a handful of pollutants were actually balanced, whereas most compounds were either removed or added to the flow, with no observed correlation to chemical properties. A prominent observation was the load in-crease along the flow for some pollutants during base-flow conditions. This trend, which was correlated with salinity elevation and was verified in lab experiments, suggests that seawater intrusion to the bottom of the estuary may in-crease desorption rates of pollutants from the estuary bed, creating an estuarine desorption magnification effect. The combination of strong anthropogenic stress with increased desorption rates severely limits the estuary's potential to mitigate pollutants, frequently transforming it into a pollution source rather than a sink.
英文关键词	Stormwater Base-flow Addition Removal Desorption Pollutant load Mixture
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000871095200009
WOS关键词	CONSTRUCTED WETLANDS ; WASTE-WATER ; REMOVAL ; PESTICIDES ; PHARMACEUTICALS ; CONTAMINANTS ; SORPTION ; PRODUCTS ; DYNAMICS ; FATE
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/2XILL650/398469
推荐引用方式 GB/T 7714	Topaz, Tom. Attenuation of organic pollutants and the effects of salinity and seasonality in a Mediterranean micro-estuary[J],2023,856.
APA	Topaz, Tom.(2023).Attenuation of organic pollutants and the effects of salinity and seasonality in a Mediterranean micro-estuary.SCIENCE OF THE TOTAL ENVIRONMENT,856.
MLA	Topaz, Tom."Attenuation of organic pollutants and the effects of salinity and seasonality in a Mediterranean micro-estuary".SCIENCE OF THE TOTAL ENVIRONMENT 856(2023).

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