DOI: 10.1002/2015GL063840
论文题名: Effects of temperature, pH, and ionic strength on the Henry's law constant of triethylamine
作者: Leng C.-B. ; Roberts J.E. ; Zeng G. ; Zhang Y.-H. ; Liu Y.
刊名: Geophysical Research Letters
ISSN: 0094-9511
EISSN: 1944-9242
出版年: 2015
卷: 42, 期: 9 起始页码: 3569
结束页码: 3575
语种: 英语
英文关键词: 1-octanol
; bubble column system
; Henry's law constant
; ionic strength effect
; temperature dependence
; triethylamine
Scopus关键词: Bubble columns
; Fourier transform infrared spectroscopy
; Temperature distribution
; 1-octanol
; Effects of temperature
; Fourier transform infrared spectrometer
; Henry's Law constant
; Lower troposphere
; Strong dependences
; Temperature dependence
; Triethylamines
; Ionic strength
; droplet
; FTIR spectroscopy
; precipitation quality
; rainwater
; troposphere
英文摘要: The Henry's law constants (KH ) of triethylamine (TEA) in pure water and in 1-octanol were measured for the temperatures pertinent to the lower troposphere (278-298K) using a bubble column system coupled to a Fourier transform infrared spectrometer. The KH values of TEA in water and 1-octanol at 298K are 5.75±0.86molL-1atm-1 and 115.62±5.78molL-1atm-1. The KH values display strong dependence on temperature, pH, and ionic strength. The characteristic times for TEA to establish an equilibrium between gas and droplet with a size of 5.6μm are ∼33s (298K, pH=5.6); ∼8.9×102s (278K, pH=5.6); ∼1.3×103s (298K, pH=4.0); and 3.6×104s (278K, pH=4.0). The evaluation of TEA partitioning between gas phase and condensed phase implies that TEA predominantly resides in rainwater, and TEA loss to organic aerosol is negligible. Key Points Henry's law constants of amines depend on temperature, pH, and ionic strength Characteristic time for gas-droplet equilibrium depends on temperature and pH Amines predominantly reside in rainwater, and loss to organics is negligible ©2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84930478332&doi=10.1002%2f2015GL063840&partnerID=40&md5=6a9532293baa51cdc8dba830cac536f6
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9126
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Institute of Chemical Physics, School of Chemistry, Beijing Institute of Technology, Beijing, China
Recommended Citation:
Leng C.-B.,Roberts J.E.,Zeng G.,et al. Effects of temperature, pH, and ionic strength on the Henry's law constant of triethylamine[J]. Geophysical Research Letters,2015-01-01,42(9).