DOI: 10.1016/j.watres.2018.07.042
Scopus记录号: 2-s2.0-85050132159
论文题名: Profiles of the benzotriazole pollutant transformation products in an urban intergranular aquifer
作者: Trček B. ; Žigon D. ; Zidar V.K. ; Auersperger P.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 144 起始页码: 254
结束页码: 264
语种: 英语
英文关键词: Benzotriazoles
; Intergranular aquifer
; Profiles
; Transformation products
; Urban groundwater
Scopus关键词: Aquifers
; Gas chromatography
; Groundwater pollution
; Groundwater resources
; Health risks
; Hydrogeology
; Industrial plants
; Industrial water treatment
; Land use
; Mass spectrometry
; Pipelines
; Potable water
; Risk assessment
; Sewage
; Unsaturated compounds
; Wastewater treatment
; Water pipelines
; Benzotriazoles
; Intergranular
; Profiles
; Transformation products
; Urban groundwater
; Effluents
; benzotriazole derivative
; drinking water
; ground water
; analytical method
; aquifer pollution
; chemical compound
; chemical pollutant
; concentration (composition)
; drinking water
; groundwater pollution
; hydraulic conductivity
; land use
; resource use
; risk assessment
; transformation
; urban area
; vadose zone
; wastewater
; wastewater treatment plant
; aquifer
; Article
; concentration (parameters)
; hydraulic conductivity
; land use
; mass fragmentography
; priority journal
; surface property
; waste water treatment plant
英文摘要: Benzotriazoles (BTs) are regarded as contaminants of emerging concern. However, their transformation products (BTTPs) in aquifers remains poorly characterized. The present study is the first detailed report on profiles of the BTTPs in an urban oxic intergranular aquifer related to water type, land use and the aquifer's depth. The 2-methyl-2H-benzotriazole (2-MeBT) and 2,4-dimethyl-2H-benzotriazole (2,4-dMeBT) were quantified using the gas chromatography–mass spectrometry (GC–MS) analytical technique based on internal standards. For the first time the relationship between the 2-MeBT and 2,4-dMeBT concentrations was studied in sampled water and discussed with respect to the different flow paths and sources of contamination. Three main sources of BTTPs were determined in urban groundwater: BTs and BTTPs included in the outflow of effluents from wastewater-treatment plants and energy-producing facilities into surface streams that recharge the aquifer and in the leaking effluents from industrial and public wastewater pipelines. The results confirm that the BTTPs are transformed from parent compounds in the aquifer's unsaturated zone in the case when the effluents are temporally stored in sediments with a lower hydraulic conductivity, which is indicated with the highest median concentrations of BTTPs referring to the perched aquifers where the BTTPs proportions were 92–99%. BTTPs dominated over the parent BTs also in groundwater. The highest concentrations of BTTPs (up to 174 and 144 ng L−1 for the 2-MeBT and 2,4-dMeBT ng L−1, respectively) were measured in groundwater abstracted from the upper parts of the aquifer in the area where the losses from industrial wastewater pipelines were evidenced. The 2,4-dMeBT dominated over the 2-MeBT in the BTTPs originating from BTs included in the industrial effluents, which is the opposite to the case when their origin is in the municipal effluents. The median sum concentration of the BTTPs in drinking-water resources (2.0 ng L−1) is lower than the quality criterion recommended for BTs so far. Nevertheless, the abundance of BTs in the environment and the apparent environmental relevance of the BTTPs in urban groundwater indicate the need for a risk assessment of BTTPs with respect to health and the environment. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112482
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 Ulica17, 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. Profiles of the benzotriazole pollutant transformation products in an urban intergranular aquifer[J]. Water Research,2018-01-01,144