DOI: 10.1016/j.watres.2018.03.029
Scopus记录号: 2-s2.0-85046035898
论文题名: Diffusive gradients in thin-films (DGT) for in situ sampling of selected endocrine disrupting chemicals (EDCs) in waters
作者: Chen W. ; Pan S. ; Cheng H. ; Sweetman A.J. ; Zhang H. ; Jones K.C.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 137 起始页码: 211
结束页码: 219
语种: 英语
英文关键词: Diffusive gradients in thin-films (DGT)
; Monitoring
; Passive sampling
; Wastewater
; Water framework directive
; Water quality
Scopus关键词: Biological materials
; Diffusion in solids
; Environmental regulations
; Indicators (chemical)
; Ionic strength
; Monitoring
; Phenols
; Thin films
; Wastewater
; Wastewater treatment
; Water conservation
; Water quality
; Conventional methods
; Diffusive gradients in thin films
; Dissolved organic matters
; Endocrine disrupting chemicals
; Field concentrations
; Passive sampling
; Wastewater treatment plants
; Water Framework Directives
; Endocrine disrupters
; alkylphenol
; dissolved organic matter
; estrogen derivative
; phenol derivative
; endocrine disruptor
; diffusion
; endocrine disruptor
; film
; in situ measurement
; laboratory method
; monitoring system
; resin
; sampler
; sampling
; wastewater treatment
; water management
; water quality
; water treatment
; adsorption
; Article
; binding affinity
; concentration (parameters)
; diffusion flux
; hydrophilicity
; ionic strength
; lipophilicity
; pH
; priority journal
; waste water management
; water quality
; water sampling
; analysis
; devices
; diffusion
; environmental monitoring
; osmolarity
; procedures
; waste water
; water pollutant
; Diffusion
; Endocrine Disruptors
; Environmental Monitoring
; Osmolar Concentration
; Waste Water
; Water Pollutants, Chemical
英文摘要: A passive water sampler based on the diffusive gradients in thin-films (DGT) technique was developed and tested for 3 groups of endocrine disrupting chemicals (EDCs, including oestrogens, alkyl-phenols and bisphenols). Three different resins (hydrophilic-lipophilic-balanced (HLB), XAD18 and Strata-XL-A (SXLA)) were investigated for their suitability as the binding phase for DGT devices. Laboratory tests across a range of pH (3.5–9.5), ionic strength (0.001–0.5 M) and dissolved organic matter concentration (0–20 mg L−1) showed HLB and XAD18-DGT devices were more stable compared to SXLA-DGT. HLB-DGT and XAD18-DGT accumulated test chemicals with time consistent with theoretical predictions, while SXLA-DGT accumulated reduced amounts of chemical. DGT performance was also compared in field deployments up to 28 days, alongside conventional active sampling at a wastewater treatment plant. Uptake was linear to the samplers over 18 days, and then began to plateau/decline, indicating the maximum deployment time in those conditions. Concentrations provided by the DGT samplers compared well with those provided by auto-samplers. DGT integrated concentrations over the deployment period in a way that grab-sampling cannot. The advantages of the DGT sampler over active sampling include: low cost, ease of simultaneous multi-site deployment, in situ analyte pre-concentration and reduction of matrix interferences compared with conventional methods. Compared to other passive sampler designs, DGT uptake is independent of flow rate and therefore allows direct derivation of field concentrations from measured compound diffusion coefficients. This passive DGT sampler therefore constitutes a viable and attractive alternative to conventional grab and active water sampling for routine monitoring of selected EDCs. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112810
Appears in Collections: 气候减缓与适应
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作者单位: Lancaster Environment Centre, Lancaster University, Lancaster, LA1 4YQ, United Kingdom; Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, China; Guangdong Key Laboratory of Agricultural Environment Pollution Integrated Control, Guangdong Institute of Eco-Environmental and Soil Sciences, Guangzhou, 510650, China; State Key Laboratory of Environmental and Biological Analysis, Department of Chemistry, Hong Kong Baptist University, Kowloon TongHong Kong SAR, Hong Kong
Recommended Citation:
Chen W.,Pan S.,Cheng H.,et al. Diffusive gradients in thin-films (DGT) for in situ sampling of selected endocrine disrupting chemicals (EDCs) in waters[J]. Water Research,2018-01-01,137