DOI: 10.1016/j.atmosenv.2014.02.021
Scopus记录号: 2-s2.0-84897669343
论文题名: Experimental method development for estimating solid-phase diffusion coefficients and material/air partition coefficients of SVOCs
作者: Liu X ; , Guo Z ; , Roache N ; F
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2014
卷: 89 起始页码: 76
结束页码: 84
语种: 英语
英文关键词: Chamber testing
; Mass transfer modeling
; Material/air partition coefficient
; Polychlorinated biphenyls
; Semivolatile organic compounds
; Solid-phase diffusion coefficient
Scopus关键词: Chamber testing
; Mass transfer modeling
; Partition coefficient
; Semivolatile organic compounds
; Solid-phase diffusion
; Environmental chambers
; Estimation
; Fasteners
; Materials
; Organic pollutants
; Polychlorinated biphenyls
; Polypropylenes
; Diffusion
; concrete
; glass
; politef
; polychlorinated biphenyl derivative
; polyetheretherketone
; polyethylene
; polypropylene
; stainless steel
; concentration (composition)
; data acquisition
; diffusion
; estimation method
; indoor air
; parameterization
; volatile organic compound
; adsorption
; article
; concentration (parameters)
; diffusion coefficient
; limit of detection
; limit of quantitation
; material air partition coefficient
; molecular weight
; partition coefficient
; priority journal
; quality control
; solid phase diffusion coefficient
; vapor pressure
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: The solid-phase diffusion coefficient (Dm) and material/air partition coefficient (Kma) are key parameters for characterizing the sources and transport of semivolatile organic compounds (SVOCs) in the indoor environment. In this work, a new experimental method was developed to estimate parameters Dm and Kma. The SVOCs chosen for study were polychlorinated biphenyl (PCB) congeners, including PCB-52, PCB-66, PCB-101, PCB-110, and PCB-118. The test materials included polypropylene, high density polyethylene, low density polyethylene, polytetrafluoroethylene, polyether ether ketone, glass, stainless steel and concrete. Two 53-L environmental chambers were connected in series, with the relatively stable SVOCs source in the source chamber and the test materials, made as small "buttons", in the test chamber. Prior to loading the test chamber with the test materials, the test chamber had been dosed with SVOCs for 12 days to "coat" the chamber walls. During the tests, the material buttons were removed from the test chamber at different exposure times to determine the amount of SVOC absorbed by the buttons. SVOC concentrations at the inlet and outlet of the test chamber were also monitored. The data were used to estimate the partition and diffusion coefficients by fitting a sink model to the experimental data. The parameters obtained were employed to predict the accumulation of SVOCs in the sink materials using an existing mass transfer model. The model prediction agreed reasonably well with the experimental data. © 2014. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/80673
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 Risk Management Research Laboratory, Research Triangle Park, NC 27711, United States; ARCADIS U.S. Inc., 4915 Prospectus Drive, Suite F, Durham, NC 27713, United States
Recommended Citation:
Liu X,, Guo Z,, Roache N,et al. Experimental method development for estimating solid-phase diffusion coefficients and material/air partition coefficients of SVOCs[J]. Atmospheric Environment,2014-01-01,89