DOI: 10.1016/j.atmosenv.2014.09.050
Scopus记录号: 2-s2.0-84924122469
论文题名: Application of the Junge- and Pankow-equation for estimating indoor gas/particle distribution and exposure to SVOCs
作者: Salthammer T ; , Schripp T
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 106 起始页码: 467
结束页码: 476
语种: 英语
英文关键词: Airborne particles
; Partition coefficient
; Settled house dust
; SVOCs
; Vapor pressure
Scopus关键词: Alcohols
; Dust
; Estimation
; Gases
; Hydrostatic pressure
; Intelligent systems
; Monte Carlo methods
; Vapor pressure
; Airborne particle
; Gas/particle distribution
; House dust
; Octanol/air partition coefficient
; Octanol/water partition coefficient
; Partition coefficient
; Physical and chemical properties
; SVOCs
; Parameter estimation
; octanol
; volatile organic compound
; water
; dust
; health risk
; indoor air
; partition coefficient
; physicochemical property
; pollution exposure
; public health
; spatial distribution
; vapor pressure
; volatile organic compound
; absorption
; airborne particle
; algorithm
; Article
; chemical parameters
; gas
; gas phase
; henry law constant
; house dust
; indoor air pollution
; junge equation
; mathematical parameters
; Monte Carlo method
; organic content
; pankow equation
; particle concentration
; particulate matter
; partition coefficient
; physical phenomena
; priority journal
; 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: In the indoor environment, distribution and dynamics of an organic compound between gas phase, particle phase and settled dust must be known for estimating human exposure. This, however, requires a detailed understanding of the environmentally important compound parameters, their interrelation and of the algorithms for calculating partitioning coefficients. The parameters of major concern are: (I) saturation vapor pressure (PS) (of the subcooled liquid); (II) Henry's law constant (H); (III) octanol/water partition coefficient (KOW); (IV) octanol/air partition coefficient (KOA); (V) air/water partition coefficient (KAW) and (VI) settled dust properties like density and organic content. For most of the relevant compounds reliable experimental data are not available and calculated gas/particle distributions can widely differ due to the uncertainty in predicted Ps and KOA values. This is not a big problem if the target compound is of low (<10-6Pa) or high (>10-2Pa) volatility, but in the intermediate region even small changes in Ps or KOA will have a strong impact on the result. Moreover, the related physical processes might bear large uncertainties. The KOA value can only be used for particle absorption from the gas phase if the organic portion of the particle or dust is high. The Junge- and Pankow-equation for calculating the gas/particle distribution coefficient KP do not consider the physical and chemical properties of the particle surface area. It is demonstrated by error propagation theory and Monte-Carlo simulations that parameter uncertainties from estimation methods for molecular properties and variations of indoor conditions might strongly influence the calculated distribution behavior of compounds in the indoor environment. © 2014 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81857
Appears in Collections: 气候变化事实与影响
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作者单位: Fraunhofer WKI, Department of Material Analysis and Indoor Chemistry, Bienroder Weg 54E, Braunschweig, Germany
Recommended Citation:
Salthammer T,, Schripp T. Application of the Junge- and Pankow-equation for estimating indoor gas/particle distribution and exposure to SVOCs[J]. Atmospheric Environment,2015-01-01,106