Temperature-dependent absorption cross-sections of gaseous nitric acid and methyl nitrate

Rattigan, Oliver V.; Lutman, E. R.; Jones, R. L.; Cox, R. A.; Clemitshaw, Kevin C.; Williams, Jonathan

doi:10.1016/1010-6030(92)80003-e

Cited by 39 publications

(23 citation statements)

References 11 publications

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“…Over the wavelength range 205-310 nm there is good agreement with the earlier studies of Rattigan et al (1992), Biaume (1973), and . At λ < 205 nm, the data from different studies show small and unexplained discrepancies.…”

Section: Comments On Preferred Valuessupporting

confidence: 79%

“…At λ < 205 nm, the data from different studies show small and unexplained discrepancies. At λ > 310 nm the room temperature results of are increasingly higher than all previously reported data except those of Rattigan et al (1992), which are in good agreement. The preferred values are those given by .…”

Section: Comments On Preferred Valuessupporting

confidence: 71%

“…The temperature dependences reported by are weaker than those reported by Rattigan et al (1992). However, if the data at the lowest temperature (239 K) in the study of Rattigan et al (1992) are omitted, the agreement is good.…”

Section: Comments On Preferred Valuesmentioning

confidence: 61%

“…However, if the data at the lowest temperature (239 K) in the study of Rattigan et al (1992) are omitted, the agreement is good. give values for the temperature coefficient, B, based on the two data sets Rattigan et al, 1992) (excluding the 239 K data of Rattigan et al, 1992), and these are adopted here.…”

Section: Comments On Preferred Valuesmentioning

confidence: 89%

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Evaluated kinetic and photochemical data for atmospheric chemistry: Volume I - gas phase reactions of Ox, HOx, NOx and SOx species

et al. 2004

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Abstract. This article, the first in the series, presents kinetic and photochemical data evaluated by the IUPAC Subcommittee on Gas Kinetic Data Evaluation for Atmospheric Chemistry. It covers the gas phase and photochemical reactions of O x , HO x , NO x and SO x species, which were last published in 1997, and were updated on the IUPAC website in late 2001. The article consists of a summary sheet, containing the recommended kinetic parameters for the evaluated reactions, and five appendices containing the data sheets, which provide information upon which the recommendations are made.

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Section: Comments On Preferred Valuessupporting

confidence: 79%

Section: Comments On Preferred Valuessupporting

confidence: 71%

Section: Comments On Preferred Valuesmentioning

confidence: 61%

Section: Comments On Preferred Valuesmentioning

confidence: 89%

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Evaluated kinetic and photochemical data for atmospheric chemistry: Volume I - gas phase reactions of Ox, HOx, NOx and SOx species

et al. 2004

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“…7 The alkyl nitrate absorption cross-sections are in good agreement with previously published values. 3,13,15,[21][22][25][26] As the size of the alkyl group and the degree of branching increase, so do the absorption cross-sections. This trend is well documented and is attributed to donation of electron density to the ONO2 chromophore and to steric influence on the ONO bond angle.…”

Section: Absorption Cross Sectionsmentioning

confidence: 99%

Quantum Yields for Photochemical Production of NO₂ from Organic Nitrates at Tropospherically Relevant Wavelengths

et al. 2014

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Absorption cross sections and quantum yields for NO2 production (Φ 2 ) are reported for gaseous methyl, ethyl, n-propyl and isopropyl nitrate at 294 K. Absorption cross sections in the wavelength range 240 -320 nm agree well with prior determinations. NO2 quantum yields at photo-excitation wavelengths of 290, 295 and 315 nm are unity within experimental uncertainties for all the alkyl nitrates studied, and are independent of bath gas (N2) pressure for total sample pressures in the range 250 -700 Torr. When averaged over all wavelengths and sample pressures, values of Φ 2 are 1.03  0.05 (methyl nitrate), 0.98  0.09 (ethyl nitrate), 1.01  0.04 (n-propyl nitrate) and 1.00  0.05 (isopropyl nitrate), with uncertainties corresponding to 1 standard deviation. Absorption cross sections for ethyl nitrate, isopropyl nitrate and two unsaturated dinitrate compounds, but-3-ene-1,2-diyl dinitrate and (Z)-but-2-ene-1,4-diyl dinitrate in acetonitrile solution are compared to gas-phase values, and over the wavelength range 260 -315 nm, the gas-phase values are well reproduced by dividing the liquid phase cross sections by 2.0,1.6, 1.7 and 2.2 respectively. Reasonable estimates of the gas-phase absorption cross sections for low volatility organic nitrates can therefore be obtained by halving the values for acetonitrile solutions. The quantum yield for NO2 formation from photoexcitation of but-3-ene-1,2-diyl dinitrate at 290 nm is significantly lower than those for the alkyl (mono) nitrates: a best estimate of Φ 2  0.25 is obtained from the experimental measurements.

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UV Absorption Cross Sections of Acetyl Peroxynitrate and Trifluoroacetyl Peroxynitrate at 298 K

Libuda¹,

Zabel²

1995

Ber Bunsenges Phys Chem

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The UV absorption cross sections of acetyl peroxynitrate (PAN) and trifluoroacetyl peroxynitrate (FPAN) were determined at 298 K in the wavelength ranges 220-325 nm and 230-305 nm, respectively. Both peroxynitrates were prepared from nitric acid and the corresponding peroxy acids in n-tridecane solution. The UV spectra were measured in a large cell (v = 420 drrr') equipped with White mirror systems for the simultaneous detection of gas phase species by long-path UV and IR absorption. Impurities in the samples were quantified by their IR and/or UV absorption, and the UV spectra were corrected for contributions from these impurities using appropriate reference spectra. Concentrations of acetyl peroxynitrate and trifluoroacetyl peroxynitrate were derived from their IR absorptions by application of Beer's law. IR absorption coefficients were determined based on pressure measurements of the pure compound (for PAN) or on the stoichiometric CO 2 yield in the thermal decomposition of the peroxynitrate in the presence of NO and 02 (for FPAN). The resulting UV absorption cross sections of PAN are larger than literature values, leading to photolysis rate constants on the Earth's surface which are higher by a factor of 4 than previous values (Senum et aI., 1984). The absorption cross sections of FPAN were measured for the first time and result in photolysis rate constants which are slightly higher than those of PAN, suggesting that CF3C(0)02N02 and, by analogy, other haloacetyl peroxynitrates have too short a lifetime in the upper troposphere to be of importance for the transport of halogens into the stratosphere. 1205

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Temperature-dependent absorption cross-sections of gaseous nitric acid and methyl nitrate

Cited by 39 publications

References 11 publications

Evaluated kinetic and photochemical data for atmospheric chemistry: Volume I - gas phase reactions of O<sub>x</sub>, HO<sub>x</sub>, NO<sub>x</sub> and SO<sub>x</sub> species

Evaluated kinetic and photochemical data for atmospheric chemistry: Volume I - gas phase reactions of O<sub>x</sub>, HO<sub>x</sub>, NO<sub>x</sub> and SO<sub>x</sub> species

Quantum Yields for Photochemical Production of NO₂ from Organic Nitrates at Tropospherically Relevant Wavelengths

UV Absorption Cross Sections of Acetyl Peroxynitrate and Trifluoroacetyl Peroxynitrate at 298 K

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Temperature-dependent absorption cross-sections of gaseous nitric acid and methyl nitrate

Cited by 39 publications

References 11 publications

Evaluated kinetic and photochemical data for atmospheric chemistry: Volume I - gas phase reactions of O&lt;sub&gt;x&lt;/sub&gt;, HO&lt;sub&gt;x&lt;/sub&gt;, NO&lt;sub&gt;x&lt;/sub&gt; and SO&lt;sub&gt;x&lt;/sub&gt; species

Evaluated kinetic and photochemical data for atmospheric chemistry: Volume I - gas phase reactions of O&lt;sub&gt;x&lt;/sub&gt;, HO&lt;sub&gt;x&lt;/sub&gt;, NO&lt;sub&gt;x&lt;/sub&gt; and SO&lt;sub&gt;x&lt;/sub&gt; species

Quantum Yields for Photochemical Production of NO2 from Organic Nitrates at Tropospherically Relevant Wavelengths

UV Absorption Cross Sections of Acetyl Peroxynitrate and Trifluoroacetyl Peroxynitrate at 298 K

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Product

Resources

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Evaluated kinetic and photochemical data for atmospheric chemistry: Volume I - gas phase reactions of O<sub>x</sub>, HO<sub>x</sub>, NO<sub>x</sub> and SO<sub>x</sub> species

Evaluated kinetic and photochemical data for atmospheric chemistry: Volume I - gas phase reactions of O<sub>x</sub>, HO<sub>x</sub>, NO<sub>x</sub> and SO<sub>x</sub> species

Quantum Yields for Photochemical Production of NO₂ from Organic Nitrates at Tropospherically Relevant Wavelengths