DOI: 10.1016/j.watres.2018.01.048
Scopus记录号: 2-s2.0-85041422949
论文题名: Size exclusion chromatography with online ICP-MS enables molecular weight fractionation of dissolved phosphorus species in water samples
作者: Venkatesan A.K. ; Gan W. ; Ashani H. ; Herckes P. ; Westerhoff P.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 133 起始页码: 264
结束页码: 271
语种: 英语
英文关键词: Dissolved organic carbon
; ICP-MS
; Molecular weight distribution
; Phosphorus
; Size exclusion chromatography
Scopus关键词: Aquatic ecosystems
; Effluents
; Inductively coupled plasma mass spectrometry
; Mass spectrometers
; Molecular weight distribution
; Organic carbon
; Phosphorus
; Surface waters
; Aqueous samples
; Dissolved organic carbon
; Dissolved phosphorus
; Environmental sample
; ICP-MS
; Overlapping peaks
; Robust methods
; Wastewater effluents
; Size exclusion chromatography
; dissolved organic matter
; inositol phosphate
; organic matter
; phosphate
; phosphorus
; surface water
; fresh water
; phosphorus
; chromatography
; dissolved matter
; dissolved organic carbon
; fractionation
; mass spectrometry
; molecular analysis
; phosphorus
; sampling
; weight
; aerosol
; aquatic environment
; Article
; fractionation
; molecular weight
; priority journal
; size exclusion chromatography
; static electricity
; waste water
; water analysis
; analysis
; chemistry
; fractionation
; procedures
; size exclusion chromatography
; spectroscopy
; ultrafiltration
; water pollutant
; Chemical Fractionation
; Chromatography, Gel
; Fresh Water
; Molecular Weight
; Phosphorus
; Spectrum Analysis
; Ultrafiltration
; Waste Water
; Water Pollutants, Chemical
英文摘要: Phosphorus (P) is an important and often limiting element in terrestrial and aquatic ecosystem. A lack of understanding of its distribution and structures in the environment limits the design of effective P mitigation and recovery approaches. Here we developed a robust method employing size exclusion chromatography (SEC) coupled to an ICP-MS to determine the molecular weight (MW) distribution of P in environmental samples. The most abundant fraction of P varied widely in different environmental samples: (i) orthophosphate was the dominant fraction (93–100%) in one lake, two aerosols and DOC isolate samples, (ii) species of 400–600 Da range were abundant (74–100%) in two surface waters, and (iii) species of 150–350 Da range were abundant in wastewater effluents. SEC-DOC of the aqueous samples using a similar SEC column showed overlapping peaks for the 400–600 Da species in two surface waters, and for >20 kDa species in the effluents, suggesting that these fractions are likely associated with organic matter. The MW resolution and performance of SEC-ICP-MS agreed well with the time integrated results obtained using conventional ultrafiltration method. Results show that SEC in combination with ICP-MS and DOC has the potential to be a powerful and easy-to-use method in identifying unknown fractions of P in 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/112949
Appears in Collections: 气候减缓与适应
There are no files associated with this item.
作者单位: Center for Clean Water Technology, Department of Civil Engineering, Stony Brook University, Stony Brook, NY 11794, United States; School of Sustainable Engineering and the Built Environment, Arizona State University, Tempe, AZ 85287-3005, United States; School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou, 510275, China; School of Molecular Sciences, Arizona State University, Tempe, AZ 85287-1604, United States
Recommended Citation:
Venkatesan A.K.,Gan W.,Ashani H.,et al. Size exclusion chromatography with online ICP-MS enables molecular weight fractionation of dissolved phosphorus species in water samples[J]. Water Research,2018-01-01,133