DOI: 10.1016/j.atmosenv.2020.117405
论文题名: Volatility parameters of secondary organic aerosol components determined using a thermal denuder
作者: Babar Z.B. ; Ashraf F. ; Park J.-H. ; Lim H.-J.
刊名: Atmospheric Environment
ISSN: 1352-2310
出版年: 2020
卷: 226 语种: 英语
英文关键词: Enthalpy
; Vaporization
; Enthalpy of vaporization
; Saturation pressure
; Secondary organic aerosols
; Thermal denuder
; Volatility
; Aerosols
; acid
; adipic acid
; ketopinic acid
; phthalic acid
; pimelic acid
; pinic acid
; succinic acid
; unclassified drug
; aerosol
; equipment
; parameter estimation
; saturation
; vaporization
; volatile substance
; Article
; controlled study
; enthalpy
; gas
; particle size
; pressure
; priority journal
; retention time
; secondary organic aerosol
; temperature
; vapor
; vaporization
学科: Enthalpy of vaporization
; Saturation pressure
; Secondary organic aerosol (SOA)
; Thermal denuder
; Volatility
中文摘要: In this study, the characterization of a new thermal denuder and its application to determine the volatility parameters of important components of secondary organic aerosol (SOA) are presented in detail. The temperature ramping rate to achieve a set value was ~14.3 °C min−1 in the range of 25–150 °C. Particle loss during the penetration through the denuder was negligible in the temperature and effective residence time (RT) ranges of 25 °C–60 °C and 12.5 s–50 s, respectively. In addition, a vapor-phase aerosol reached equilibrium with the gas phase at an effective RT of approximately 24 s. Furthermore, volatility profile data generated using the thermal denuder with the help of a scanning particle sizer were used to determine the saturation pressure (P0sat) at 25 °C and enthalpy of vaporization (ΔHv) of typical biogenic and anthropogenic SOA components by the integrated volume method. Determined ΔHv and P0sat values for succinic acid, adipic acid, pimelic acid, phthalic acid, pinic acid, and ketopinic acid were 86.6 ± 2.5 kJ mol−1, 146.1 kJ mol−1, 139.2 kJ mol−1, 135.9 kJ mol−1, 93.8 ± 1.8 kJ mol−1, and 136.6 kJ mol−1 and 4.70 ± 0.7 x 10−5 Pa, 1.98 x 10−5 Pa, 8.91 x 10−5 Pa, 8.50 x 10−5 Pa, 1.61 ± 0.5 x 10−4 Pa, and 5.81 x 10−5 Pa, respectively. These values were comparable with the literature data. © 2020 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/160412
Appears in Collections: 气候变化与战略
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作者单位: Department of Environmental Engineering, Kyungpook National University, Daegu, 41566, South Korea; Department of Chemical Engineering, COMSATS Institute of Information Technology, Defence Road, Off Raiwind Road, Lahore, 54000, Pakistan
Recommended Citation:
Babar Z.B.,Ashraf F.,Park J.-H.,et al. Volatility parameters of secondary organic aerosol components determined using a thermal denuder[J]. Atmospheric Environment,2020-01-01,226