Evaluation of alkene degradation in the detailed tropospheric chemistry mechanism, MCM v3, using environmental chamber data

Pinho, Paulo; Pio, Casimiro; Carter, W. P. L.; Jenkin, Michael E.

doi:10.1007/s10874-006-9025-y

Cited by 18 publications

(16 citation statements)

References 41 publications

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“…To varying extents, such mechanisms also incorporate strategic simplifications to limit their overall size, which would otherwise include as many as 10 5 −10 6 reactions. The performance of these gas-phase mechanisms can be tested (and, if necessary, refined) using chamber data (e.g., Carter, 2000;Pinho et al, 2005Pinho et al, , 2006Pinho et al, , 2007. Such procedures have traditionally been focused on providing validated descriptions of ozone formation from the photooxidation of VOC/NO x mixtures, although the development of highly-instrumented chambers (see Table 2 in Sect.…”

Section: Generation Of Atmospheric Degradation Mechanisms For Vocsmentioning

confidence: 99%

The formation, properties and impact of secondary organic aerosol: current and emerging issues

et al. 2009

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Abstract. Secondary organic aerosol (SOA) accounts for a significant fraction of ambient tropospheric aerosol and a detailed knowledge of the formation, properties and transformation of SOA is therefore required to evaluate its impact on atmospheric processes, climate and human health. The chemical and physical processes associated with SOA formation are complex and varied, and, despite considerable progress in recent years, a quantitative and predictive understanding of SOA formation does not exist and therefore represents a major research challenge in atmospheric science. This review begins with an update on the current state of knowledge on the global SOA budget and is followed by an overview of the atmospheric degradation mechanisms for SOA precursors, gas-particle partitioning theory and the analytical techniques used to determine the chemical composition of SOA. A survey of recent laboratory, field and modeling studies is also presented. The following topical and emerging issues are highlighted and discussed in detail: molecular characterization of biogenic SOA constituents, condensed phase reactions and oligomerization, the interaction of atmospheric organic components with sulfuric acid, the chemical and photochemical processing of organics in the atmospheric aqueous phase, aerosol formation from real plant emissions, interaction of atmospheric organic components with water, thermodynamics and mixtures in atmospheric models. Finally, the major challenges ahead in laboratory, field and modeling studies of SOA are discussed and recommendations for future research directions are proposed.

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Section: Generation Of Atmospheric Degradation Mechanisms For Vocsmentioning

confidence: 99%

The formation, properties and impact of secondary organic aerosol: current and emerging issues

et al. 2009

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“…The quantity ([O 3 ] − [NO]) is used to evaluate the model performance (Carter et al, 2005;Pinho et al, 2006). This quantity is defined as Carter et al (2005) when simulating VOC-NO x systems.…”

Section: Propene-no X Experimentsmentioning

confidence: 99%

Design and characterization of a smog chamber for studying gas-phase chemical mechanisms and aerosol formation

Wang

Liu²,

Bernard³

et al. 2014

Atmos. Meas. Tech.

103

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Abstract. We describe here characterization of a new stateof-the-art smog chamber facility for studying atmospheric gas-phase and aerosol chemistry. The chamber consists of a 30 m 3 fluorinated ethylene propylene (FEP) Teflon film reactor housed in a temperature-controlled enclosure equipped with black lamps as the light source. Temperature can be set in the range from −10 to 40 • C at accuracy of ±1 • C as measured by eight temperature sensors inside the enclosure and one just inside the reactor. Matrix air can be purified with non-methane hydrocarbons (NMHCs) < 0.5 ppb, NO x /O 3 /carbonyls < 1 ppb and particles < 1 cm −3 . The photolysis rate of NO 2 is adjustable between 0 and 0.49 min −1 . At 298 K under dry conditions, the average wall loss rates of NO, NO 2 and O 3 were measured to be 1.41 × 10 −4 min −1 , 1.39 × 10 −4 min −1 and 1.31 × 10 −4 min −1 , respectively, and the particle number wall loss rate was measured to be 0.17 h −1 . Auxiliary mechanisms of this chamber are determined and included in the Master Chemical Mechanism to evaluate and model propene-NO x -air irradiation experiments. The results indicate that this new smog chamber can provide high-quality data for mechanism evaluation. Results of α-pinene dark ozonolysis experiments revealed secondary organic aerosol (SOA) yields comparable to those from other chamber studies, and the two-product model gives a good fit for the yield data obtained in this work. Characterization experiments demonstrate that our Guangzhou Institute of Geochemistry, Chinese Academy Sciences (GIG-CAS), smog chamber facility can be used to provide valuable data for gas-phase chemistry and secondary aerosol formation.

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“…[1][2][3] The formaldehyde, acetaldehyde and acetone could be derived from different sources, including direct anthropogenic (especially auto exhausts) and biogenic emissions, [8][9][10][11] and secondary formation from photochemical oxidation of volatile organic compounds in the atmosphere. [5][6][7]12,13 Although many studies have been conducted, there is still much uncertainty as to their sources.…”

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confidence: 99%

Carbon isotope analysis of acetaldehyde and acetone by cysteamine derivatization

Guo

Wen

Wang

et al. 2007

Rapid Comm Mass Spectrometry

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Evaluation of alkene degradation in the detailed tropospheric chemistry mechanism, MCM v3, using environmental chamber data

Cited by 18 publications

References 41 publications

The formation, properties and impact of secondary organic aerosol: current and emerging issues

The formation, properties and impact of secondary organic aerosol: current and emerging issues

Design and characterization of a smog chamber for studying gas-phase chemical mechanisms and aerosol formation

Carbon isotope analysis of acetaldehyde and acetone by cysteamine derivatization

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