2015
DOI: 10.1016/j.cplett.2015.02.032
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UV–visible spectra and gas-phase rate coefficients for the reaction of 2,3-pentanedione and 2,4-pentanedione with OH radicals

Abstract: The UV absorption cross-sections of 2,3-pentanedione and 2,4-pentanedione were measured and their reactions with OH were investigated in the gas-phase using a relative rate method. A temperature dependence of the rate coefficients was observed for both reactions over the temperature range 298 -338 K. This work provides the first UV cross-section in the gas phase for 2,4-pentanedione and the first kinetic data for the reaction of 2,3-pentanedione with OH radicals as a function of temperature. The tropospheric l… Show more

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Cited by 24 publications
(27 citation statements)
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“…Glyoxal and methylglyoxal were measured using the ACES instrument (Min et al, 2016). Light from an LED with a center wavelength of 455 nm was introduced into a 45 cm long cavity capped with highly reflective (R > 0.99995 at 455 nm) mirrors, enabling the light to make multiple passes and resulting in an effective pathlength of 10-12 km.…”
Section: Acesmentioning
confidence: 99%
See 1 more Smart Citation
“…Glyoxal and methylglyoxal were measured using the ACES instrument (Min et al, 2016). Light from an LED with a center wavelength of 455 nm was introduced into a 45 cm long cavity capped with highly reflective (R > 0.99995 at 455 nm) mirrors, enabling the light to make multiple passes and resulting in an effective pathlength of 10-12 km.…”
Section: Acesmentioning
confidence: 99%
“…In previous work, a third-or fourth-order polynomial was included in the fit to account for drift in the instrument zero signal counts (Min et al, 2016), but given the high peak signal at the FSL (several orders of magnitude greater than ambient), any changes in the background were small relative to the signal from gas phase absorbers. Due to the lack of structure in the methylglyoxal cross section, the DOASIS fitting software tended to assign a large portion of the signal to the polynomial, rather than to methylglyoxal.…”
Section: Spectral Retrievalmentioning
confidence: 99%
“…The enhanced photolysis of carbonyl nitrates from isoprene is implemented according to Barnes et al (1993) and Müller et al (2014). The enhancement is applied to the photolysis rate coefficients (j values) of nitrooxyacetone (NOA), nitrooxyacetaldehyde (NO3CH2CHO), lumped nitrates of methyl ethyl ketone (LMEKNO3), nitrates of MVK (methyl vinyl ketone) and MACR, and unsaturated C 5nitrooxyaldehyde from the isoprene + NO 3 reaction.…”
Section: Photo-induced Reactionsmentioning
confidence: 99%
“…OH radicals (9.05× -11 cm 3 molecule -1 s ) (Zhou et al, 2008), 2,3-pentanedione, with a rate coefficient for the reaction with OH radicals of 2.25× 10 -12 cm 3 molecule -1 s 1 (Szabó et al, 2011) is 40 times less reactive and consequently the secondary reaction with OH radicals could be of less importance (Messaadia et al, 2015).…”
Section: 22(e)-1-methoxy-2-methyl-1-penten-3-one + Oh Radicalsmentioning
confidence: 99%