DOI: 10.1016/j.atmosenv.2014.12.029
Scopus记录号: 2-s2.0-84919783931
论文题名: The influence of surface sorption and air flow rate on phthalate emissions from vinyl flooring: Measurement and modeling
作者: Liang Y ; , Xu Y
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 103 起始页码: 147
结束页码: 155
语种: 英语
英文关键词: Air flow rate
; Chamber test
; Model
; Phthalates
; Surface absorption
; SVOCs
Scopus关键词: Air
; Esters
; Flow rate
; Gases
; Models
; Potassium compounds
; Volatile organic compounds
; Wood
; Air flow-rate
; Chamber tests
; Phthalates
; Surface absorption
; SVOCs
; Stainless steel
; diisononyl phthalate
; phthalic acid
; phthalic acid bis(2 ethylhexyl) ester
; phthalic acid derivative
; stainless steel
; unclassified drug
; absorption
; airflow
; atmospheric pollution
; emission
; floor
; indoor air
; isotherm
; numerical model
; phthalate
; sorption
; steel
; volatile organic compound
; absorption
; adsorption
; airflow
; Article
; building material
; diffusion coefficient
; exhaust gas
; flow rate
; isotherm
; partition coefficient
; steady state
; wood
; Absorption
; Air
; Flow Measurement
; Models
; Surfaces
; Testing
; Voc
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: This study investigated the influences of surface sorption and air flow rate on the emission of phthalates from building materials. Controlled tests were conducted in specially designed stainless steel and wood chambers, and the steady-state concentration in the stainless steel chamber was about 2-3 times higher than that in the wood chamber for di(2-ethylhexyl) phthalate (DEHP) and diisononyl phthalate (DINP). The emission rate of phthalates increased in the wood chamber due to the diffusion mass flow through the chamber wall (i.e., surface absorption). The adsorption isotherm of phthalates on the stainless steel surface and the absorption parameters (i.e., diffusion and partition coefficients) of phthalates on the wood surface were determined experimentally, and the values were comparable to those in the literature. The equilibration time scale for phthalates absorbed to the sink reservoir in actual indoor environments was estimated and can be substantial (approximately 80 years), indicating that surface absorption may continuously drive phthalates from their indoor sources to various sinks and thus significantly increase the emission rate of phthalates. The gas-phase concentration of DEHP was measured in two stainless steel chambers operated at flow rates of 300mL/min and 3000mL/min, respectively, which were both adjusted to 1000mL/min after steady state was reached. The gas-phase concentration of DEHP in the chamber was very sensitive to the chamber air flow rate, and higher air flow rates resulted in lower concentration levels. However, the increased emission rate compensated for the dilution in the gas phase and made the DEHP concentration not drop substantially with an increase in the air flow rate. Independently measured or calculated parameters were used to validate a semi-volatile organic compounds (SVOCs) emission model that included absorptive surfaces and for a range of air flow rates, with excellent agreement between the model predictions and the observed chamber concentrations of phthalates. © 2014 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82047
Appears in Collections: 气候变化事实与影响
There are no files associated with this item.
作者单位: Department of Civil, Architectural and Environmental Engineering, The University of Texas at Austin, Austin, TX, United States
Recommended Citation:
Liang Y,, Xu Y. The influence of surface sorption and air flow rate on phthalate emissions from vinyl flooring: Measurement and modeling[J]. Atmospheric Environment,2015-01-01,103