DOI: 10.1016/j.watres.2018.10.019
Scopus记录号: 2-s2.0-85056161306
论文题名: Evaluating a chemical source-tracing suite for septic system nitrate in household wells
作者: Nitka A.L. ; DeVita W.M. ; McGinley P.M.
刊名: Water Research
ISSN: 431354
出版年: 2019
起始页码: 438
结束页码: 445
语种: 英语
英文关键词: Groundwater
; Nitrate
; Sweeteners
; Tracers
; Wastewater
Scopus关键词: Agriculture
; Aquifers
; Chemical analysis
; Contamination
; Food additives
; Groundwater
; Groundwater resources
; Land use
; Nitrates
; Radioactive tracers
; Septic tanks
; Sugar substitutes
; Wastewater
; Agricultural contamination
; Antibiotic sulfamethoxazole
; Artificial sweeteners
; Nitrate concentration
; Persistent compounds
; Residential development
; Sweeteners
; Wastewater constituents
; Groundwater pollution
; acesulfame
; agricultural chemical
; herbicide
; nitrate
; organic compound
; sucralose
; sulfamethoxazole
; well water
; agricultural practice
; anthropogenic effect
; antibiotics
; chemical composition
; groundwater pollution
; herbicide
; nitrate
; tracer
; wastewater
; water chemistry
; well water
; agricultural land
; agriculture
; aquifer
; Article
; electrospray
; household
; land use
; priority journal
; rural area
; sewage
; waste water
; water analysis
; water contamination
英文摘要: Reducing human and ecological risks of groundwater nitrate contamination requires understanding the source of nitrate. Land use practices, such as agriculture and residential development, can increase groundwater nitrate concentrations. This study evaluated a chemical source-tracing suite that paired analysis of agricultural herbicide metabolites and human wastewater constituents. The source-tracing suite was tested in an area subject to nitrate from both agriculture and on-site waste (“septic”) systems. Monitoring wells showed that agricultural contamination was deeper (>5 m) in the aquifer consistent with its origin a greater distance from wells and that on-site waste (“septic system”) contamination was shallower in the aquifer (<3 m). Repeated sampling of seventeen household wells showed evidence of both agricultural and on-site waste contamination in wells with higher nitrate concentrations. The artificial sweeteners sucralose and acesulfame and the antibiotic sulfamethoxazole were the only septic system indicators consistently detected. Less persistent compounds, such as caffeine and acetaminophen, were never detected in the household wells indicating they were attenuated over the distance between septic system and well and reducing their utility as a tracer of septic system nitrate. Overall, there was a positive relationship between sucralose, acesulfame and nitrate in wells with low levels of agricultural contamination although the relationship varied between wells. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/122185
Appears in Collections: 气候变化事实与影响
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作者单位: Center for Watershed Science and Education, University of Wisconsin-Stevens Point, 800 Reserve Street, Stevens PointWI 54481, United States
Recommended Citation:
Nitka A.L.,DeVita W.M.,McGinley P.M.. Evaluating a chemical source-tracing suite for septic system nitrate in household wells[J]. Water Research,2019-01-01