DOI: 10.1016/j.watres.2018.09.008
Scopus记录号: 2-s2.0-85053196221
论文题名: Glyphosate dispersion, degradation, and aquifer contamination in vineyards and wheat fields in the Po Valley, Italy
作者: la Cecilia D. ; Tang F.H.M. ; Coleman N.V. ; Conoley C. ; Vervoort R.W. ; Maggi F.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 146 起始页码: 37
结束页码: 54
语种: 英语
英文关键词: AMPA
; Biodegradation
; Contaminant ecohydrology
; Glyphosate
; Michaelis-menten-monod
; Pesticide
Scopus关键词: Aquifers
; Biodegradation
; Herbicides
; Hydrolysis
; Organic carbon
; Pesticides
; Soil moisture
; Aminomethylphosphonic acid
; AMPA
; Aquifer contamination
; Biodegradation process
; Carbon availability
; Eco-hydrology
; Glyphosates
; Michaelis-Menten
; Groundwater pollution
; agricultural land
; aquifer pollution
; biodegradation
; concentration (composition)
; dispersion
; ecohydrology
; environmental degradation
; glyphosate
; pesticide
; pollutant removal
; risk assessment
; vineyard
; Italy
; Po Valley
; Triticum aestivum
英文摘要: Biodegradation of glyphosate (GLP) and its metabolite aminomethylphosphonic acid (AMPA) was numerically assessed for a vineyard and a wheat field in the Po Valley, Italy. Calculation of the Hazard Quotient suggested that GLP and AMPA can pose a risk of aquifer contamination in the top 1.5 m depth within 50 years of GLP use. Numerical results relative to soil GLP and AMPA concentrations, and GLP age, half life, and turnover time show that GLP was equivalently removed through hydrolysis and oxidation, but the latter produced AMPA. Biodegradation processes in the root zone removed more than 90% of applied GLP and more than 23% of the produced AMPA between two consecutive applications. Doubling organic carbon availability enhanced GLP and AMPA biodegradation, especially GLP hydrolysis to sarcosine. This work highlights that GLP and AMPA removal is controlled by soil water dynamics that depend on ecohydrological boundary conditions, and by carbon sources availability to biodegraders. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112396
Appears in Collections: 气候减缓与适应
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作者单位: Laboratory for Environmental Engineering, School of Civil Engineering, The University of Sydney, Bld. J05, Sydney, NSW 2006, Australia; School of Life and Environmental Sciences, The University of Sydney, Bld. G08, Sydney, NSW 2006, Australia; Environmental Earth Sciences International Pty Ltd, Dickson Ave, Artarmon, NSW 82-84, Australia
Recommended Citation:
la Cecilia D.,Tang F.H.M.,Coleman N.V.,et al. Glyphosate dispersion, degradation, and aquifer contamination in vineyards and wheat fields in the Po Valley, Italy[J]. Water Research,2018-01-01,146