Low temperature mid-infrared cross-sections for peroxyacetyl nitrate (PAN) vapour

被引:22
作者
Allen, G [1 ]
Remedios, JJ
Smith, KM
机构
[1] Univ Leicester, Dept Phys & Astron, Space Res Ctr, EOS, Leicester LE1 7RH, Leics, England
[2] Rutherford Appleton Lab, Space Sci & Technol Dept, Didcot OX11 0QX, Oxon, England
关键词
D O I
10.5194/acp-5-3153-2005
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Laboratory absorption spectra of peroxyacetyl nitrate (PAN, CH3C(O) OONO2) vapour have been measured in the mid-infrared range 550 cm(-1) to 1400 cm(-1) (18.2 to 7.14 mu m) at both 250 K and 273 K, using a Fourier transform infrared spectrometer at a nominal spectral resolution of 0.25 cm(-1) ( unapodised). In addition, the 1600 cm(-1) to 2200 cm(-1) (6.25 to 4.54 mu m) spectral region has been measured at 250 K. Cross-sectional data at each temperature, as well as integrated band intensities and peak infrared absorptivities for nine absorption bands of PAN in this spectral range, have been derived from a total of twelve separately measured PAN transmission spectra. A general increase in the peak absorption cross-section for all bands is noted with decreasing temperature, with cross-sectional increases in the range 6% ( for the 1842 cm(-1) band) and 30% ( for the 991 cm(-1) band) at 250 K, relative to those previously reported at 295 K. Differences in integrated band intensities range from - 22% to + 16% for the 1741 cm(-1) and 991 cm(-1) bands respectively over the same temperature range. These new absorption cross-sections for PAN are the first to be reported at temperatures below 295 K, allowing the possibility of improved retrievals of the atmospherically important PAN species from remotely sensed infrared spectra of the cold upper troposphere. These new cross-sectional data accompany this paper as an electronic supplement.
引用
收藏
页码:3153 / 3158
页数:6
相关论文
共 20 条
[11]   Effects of detector nonlinearity on spectra measured on three commercial FT-IR spectrometers [J].
Richardson, RL ;
Yang, HS ;
Griffiths, PR .
APPLIED SPECTROSCOPY, 1998, 52 (04) :572-578
[12]   Measurement of peroxycarboxylic nitric anhydrides (PANs) during the ITCT 2K2 aircraft intensive experiment -: art. no. D23S21 [J].
Roberts, JM ;
Flocke, F ;
Chen, G ;
de Gouw, J ;
Holloway, JS ;
Hübler, G ;
Neuman, JA ;
Nicks, DK ;
Nowak, JB ;
Parrish, DD ;
Ryerson, TB ;
Sueper, DT ;
Warneke, C ;
Fehsenfeld, FC .
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 2004, 109 (D23) :1-13
[13]   THE ATMOSPHERIC CHEMISTRY OF ORGANIC NITRATES [J].
ROBERTS, JM .
ATMOSPHERIC ENVIRONMENT PART A-GENERAL TOPICS, 1990, 24 (02) :243-287
[14]   PEROXYACETYL NITRATE (PAN) IN THE UNPOLLUTED ATMOSPHERE - AN IMPORTANT RESERVOIR FOR NITROGEN-OXIDES [J].
SINGH, HB ;
HANST, PL .
GEOPHYSICAL RESEARCH LETTERS, 1981, 8 (08) :941-944
[15]   REACTIVE NITROGEN IN THE TROPOSPHERE [J].
SINGH, HB .
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 1987, 21 (04) :320-327
[16]   INVESTIGATION OF THE LOSS PROCESSES FOR PEROXYACETYL NITRATE IN THE ATMOSPHERE - UV PHOTOLYSIS AND REACTION WITH OH [J].
TALUKDAR, RK ;
BURKHOLDER, JB ;
SCHMOLTNER, AM ;
ROBERTS, JM ;
WILSON, RR ;
RAVISHANKARA, AR .
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 1995, 100 (D7) :14163-14173
[17]   A new measurement technique of peroxyacetyl nitrate at parts per trillion by volume levels: Gas chromatography/negative ion chemical ionization mass spectrometry [J].
Tanimoto, H ;
Hirokawa, J ;
Kajii, Y ;
Akimoto, H .
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 1999, 104 (D17) :21343-21354
[18]   INFRARED ABSORPTIVITIES AND INTEGRATED BAND INTENSITIES FOR GASEOUS PEROXYACETYL NITRATE (PAN) [J].
TSALKANI, N ;
TOUPANCE, G .
ATMOSPHERIC ENVIRONMENT, 1989, 23 (08) :1849-1854
[19]   Absolute band intensities of acetone ((CH3)2CO) in the infrared region of 830-3200 cm-1 at low and room temperatures [J].
Wang, WF ;
Stevenson, A ;
Reuter, DC ;
Sirota, JM .
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY, 2001, 57 (08) :1603-1610
[20]  
YAO SJ, 1976, SPECTROCHIM ACTA A, V32, P1059, DOI 10.1016/0584-8539(76)80290-5