DOI: 10.1016/j.watres.2017.12.036
Scopus记录号: 2-s2.0-85039845524
论文题名: The fate of benzotriazole pollutants in an urban oxic intergranular aquifer
作者: Trček B. ; Žigon D. ; Zidar V.K. ; Auersperger P.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 131 起始页码: 264
结束页码: 273
语种: 英语
英文关键词: Benzotriazoles
; Intergranular aquifer
; Leaking effluents
; Transformation products
; Urban groundwater
Scopus关键词: Alkylation
; Aquifers
; Chromatography
; Degradation
; Effluents
; Gas chromatography
; Groundwater
; Groundwater resources
; Hydrogeology
; Liquid chromatography
; Mass spectrometry
; Pollution
; Potable water
; Risk assessment
; Spectrometry
; Water pollution
; Water quality
; Water treatment
; Benzotriazoles
; Biotransformation pathways
; Contaminants of emerging concerns
; Intergranular
; Transformation process
; Transformation products
; Urban groundwater
; Wastewater pipelines
; Groundwater pollution
; benzotriazole derivative
; drinking water
; ground water
; aquifer
; biotransformation
; chemical compound
; chemical pollutant
; concentration (composition)
; degradation
; drinking water
; effluent
; groundwater
; groundwater pollution
; hydraulic conductivity
; phreatic zone
; pipeline
; urban pollution
; water quality
; analytic method
; aquifer
; Article
; biotransformation
; electric conductance
; hydraulic conductivity
; liquid chromatography-mass spectrometry
; mass fragmentography
; priority journal
; retention time
; standard
; tautomer
; tautomerization
; waste water
; water contamination
; water pollutant
; water quality
; water table
英文摘要: Benzotriazoles (BTs) are considered as Contaminants of Emerging Concern (CECs); however, information about their fate in aquifers continues to be absent. This was the focus of the present study, which provides the first evidence for relevant BTs’ degradation products (BTTPs) in urban aquifers that may impact the groundwater quality. The mechanisms and biotransformation pathways of BTs were investigated in an oxic intergranular medium. The BTs and BTTPs were identified and quantified by gas chromatography–mass spectrometry (GC–MS) and liquid chromatography–mass spectrometry (LC–MS) analytical techniques based on reference standards and internal materials. The major transformation products were identified as 2-methyl-2H-benzotriazole (2-MeBT) for the degradation of 1H-benzotriazole (BT) and as 2,4-dimethyl-2H-benzotriazole (2,4-dMeBT) and 1,4-dimethyl-1H-benzotriazole (1,4-dMeBT) for the degradation of 4-methyl-1H-benzotriazole (4-MeBT), and most probably also 5-methyl-1H-benzotriazole (5-MeBT). The leakage of wastewater pipelines is most probably the source of BTs. Sediments with a lower hydraulic conductivity give rise to perched aquifer conditions that lead to the temporal storage of leaking effluents and presumably the majority of BTs’ transformation processes via methylation and tautomerization. The most stable BTTPs entered the saturated zone of the aquifer, where they prevailed. Concentrations up to 1500 ng L−1 were measured for the 2,4-dMeBT, which suggest a contamination risk for groundwater that is or may be used as a source for drinking water in the case of a constant input of pollutant loads from sewer systems. © 2017 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/113013
Appears in Collections: 气候减缓与适应
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作者单位: University of Maribor, Faculty of Civil Engineering, Transportation Engineering and Architecture, Smetanova ulica 17, Maribor, SI-2000, Slovenia; Jožef Stefan Institute, Department of Environmental Sciences, Jamova cesta 39, Ljubljana, Slovenia; Public Water Supply Company Vodovod-Kanalizacija, Vodovodna cesta 90, Ljubljana, Slovenia
Recommended Citation:
Trček B.,Žigon D.,Zidar V.K.,et al. The fate of benzotriazole pollutants in an urban oxic intergranular aquifer[J]. Water Research,2018-01-01,131