DOI: 10.1016/j.atmosenv.2017.05.042
Scopus记录号: 2-s2.0-85019974586
论文题名: Sample integrity evaluation and EPA method 325B interlaboratory comparison for select volatile organic compounds collected diffusively on Carbopack X sorbent tubes
作者: Oliver K ; D ; , Cousett T ; A ; , Whitaker D ; A ; , Smith L ; A ; , Mukerjee S ; , Stallings C ; , Thoma E ; D ; , Alston L ; , Colon M ; , Wu T ; , Henkle S
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2017
卷: 163 起始页码: 99
结束页码: 106
语种: 英语
英文关键词: 1,3-Butadiene
; Benzene
; Carbopack X sorbent tubes
; EPA Method 325
; Refinery fenceline rule
; Sample integrity evaluation
Scopus关键词: Benzene
; Laboratories
; Mass spectrometry
; Organic compounds
; Sorbents
; Sorption
; Volatile organic compounds
; 1 ,3-butadiene
; EPA method
; Integrity evaluations
; Refinery fenceline rule
; Sorbent tubes
; Environmental Protection Agency
; sorbent
; volatile organic compound
; analytical method
; benzene
; concentration (composition)
; experimental apparatus
; interlaboratory comparison
; monitoring
; precision
; sampling
; valuation
; volatile organic compound
; accuracy
; Article
; chemical analysis
; concentration (parameters)
; controlled study
; environmental monitoring
; environmental protection
; government
; laboratory test
; mass fragmentography
; priority journal
; storage
; time
; tube
; North Carolina
; Research Triangle Park
; United States
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: A sample integrity evaluation and an interlaboratory comparison were conducted in application of U.S. Environmental Protection Agency (EPA) Methods 325A and 325B for diffusively monitoring benzene and other selected volatile organic compounds (VOCs) using Carbopack X sorbent tubes. To evaluate sample integrity, VOC samples were refrigerated for up to 240 days and analyzed using thermal desorption/gas chromatography-mass spectrometry at the EPA Office of Research and Development laboratory in Research Triangle Park, NC, USA. For the interlaboratory comparison, three commercial analytical laboratories were asked to follow Method 325B when analyzing samples of VOCs that were collected in field and laboratory settings for EPA studies. Overall results indicate that the selected VOCs collected diffusively on sorbent tubes generally were stable for 6 months or longer when samples were refrigerated. This suggests the specified maximum 30-day storage time of VOCs collected diffusively on Carbopack X passive samplers and analyzed using Method 325B might be able to be relaxed. Interlaboratory comparison results were in agreement for the challenge samples collected diffusively in an exposure chamber in the laboratory, with most measurements within ±25% of the theoretical concentration. Statistically significant differences among laboratories for ambient challenge samples were small, less than 1 part per billion by volume (ppbv). Results from all laboratories exhibited good precision and generally agreed well with each other. © 2017 Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82459
Appears in Collections: 气候变化事实与影响
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作者单位: U.S. Environmental Protection Agency, Office of Research and Development, National Exposure Research Laboratory, Research Triangle ParkNC, United States; Jacobs Technology Inc., Research Triangle ParkNC, United States; Alion Science and Technology, Research Triangle ParkNC, United States; Independent Consultant, Raleigh, NC, United States; U.S. Environmental Protection Agency, Office of Research and Development, National Risk Management Research Laboratory, Research Triangle ParkNC, United States; U.S. Environmental Protection Agency Senior Environmental Employment Program, Research Triangle ParkNC, United States
Recommended Citation:
Oliver K,D,, Cousett T,et al. Sample integrity evaluation and EPA method 325B interlaboratory comparison for select volatile organic compounds collected diffusively on Carbopack X sorbent tubes[J]. Atmospheric Environment,2017-01-01,163