DOI: 10.1016/j.atmosenv.2015.02.026
Scopus记录号: 2-s2.0-84922654636
论文题名: Compositional variance in extracted particulate matter using different filter extraction techniques
作者: Bein K ; J ; , Wexler A ; S
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 107 起始页码: 24
结束页码: 34
语种: 英语
英文关键词: Compositional bias
; Filter extraction
; Filter sampling
; Particulate matter composition
; Particulate matter extract
Scopus关键词: Aromatic compounds
; Aromatic hydrocarbons
; Carbon
; Chromatography
; Extraction
; Gravimetric analysis
; Ion chromatography
; Mass spectrometry
; Mixtures
; Organic carbon
; Polycyclic aromatic hydrocarbons
; Solvent extraction
; Spin glass
; Spinning (fibers)
; Chemical characterization
; Chemical compositions
; Compositional bias
; Extraction efficiencies
; Filter extraction
; Glass micro-fiber filters
; Particulate Matter
; Particulate matter compositions
; Chemical analysis
; anion
; carbon
; element
; metal
; organic carbon
; organic compound
; polycyclic aromatic hydrocarbon
; trace metal
; aerosol composition
; extraction method
; filter
; particulate matter
; rural atmosphere
; toxicology
; urban atmosphere
; analytic method
; Article
; artifact
; chemical composition
; comparative study
; extraction
; filter
; ion pair chromatography
; laboratory
; mass spectrometry
; methodology
; multi solvent extraction
; particulate matter
; priority journal
; retrospective study
; rural area
; solvent extraction
; spin down extraction
; thermogravimetry
; toxicology
; urban area
; variance
Scopus学科分类: Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
英文摘要: Collection and subsequent extraction of particulate matter (PM) from filter substrates is a common requirement for invivo and invitro toxicological studies, as well as chemical analyses such as ion chromatography and inductively coupled plasma mass spectrometry. Several filter extraction protocols exist and different laboratories employ different methods, potentially biasing inter-study comparisons. Previous studies have shown significant differences in extraction efficiency between techniques and identified the relevant extraction artifacts. However, a comprehensive inter-comparison of different methods based on the chemical composition of the extracted PM has never been conducted. In the current study, an exhaustive suite of chemical analyses is performed on PM extracted from glass micro-fiber filters using techniques commonly employed in different laboratories: Multi-solvent extraction (MSE) and spin-down extraction (SDE). PM samples were collected simultaneously during field studies conducted in an urban and rural setting using a high-volume PM2.5 sampler. Results show remarkable compositional variance between the PM extracts for all chemical components analyzed, including metals, water soluble ions, polycyclic aromatic hydrocarbons, non-aromatic organics, elemental carbon and organic carbon. Mass closure was greater than 90% for MSE but deviated substantially for SDE. Detailed retrospective gravimetric analysis of archived SDE samples revealed that a process-based loss of PM mass is the root cause of the differences. These losses are shown to be compositionally biased, both externally between different PM mixtures and internally within a given PM mixture. In combination, the results of this study are the first to demonstrate (i) an exhaustive chemical characterization of a single PM extract, (ii) the significance of directly characterizing the extracted PM used in toxicological studies, (iii) the existence of substantial compositional biases between different filter extraction techniques and (iv) the importance of standardizing filter extraction objectives and procedures to avoid introducing study bias into toxicological studies. © 2015 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81867
Appears in Collections: 气候变化事实与影响
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作者单位: Air Quality Research Center, University of California, Davis, United States; Center for Health and the Environment, University of California, Davis, United States; Crocker Nuclear Laboratory, University of California, Davis, United States; Mechanical and Aeronautical Engineering, University of California, Davis, United States; Civil and Environmental Engineering, University of California, Davis, United States; Land, Air and Water Resources, University of California, Davis, United States
Recommended Citation:
Bein K,J,, Wexler A,et al. Compositional variance in extracted particulate matter using different filter extraction techniques[J]. Atmospheric Environment,2015-01-01,107