Evaluation of two MCM v3.1 alkene mechanisms using indoor environmental chamber data

Hynes, R. G.; Angove, Dennys E.; Saunders, S. M.; Haverd, Vanessa; Azzi, Merched

doi:10.1016/j.atmosenv.2005.09.005

Cited by 39 publications

(29 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Good agreements are obtained for most of the compounds such as propene, O 3 , NO, HCHO and CH 3 CHO. The peak NO 2 concentration is overpredicted; this phenomenon was also observed by Hynes et al (2005) for the propene-NO x photolysis experiments or by Bloss et al (2005) and Zádor et al (2005) for ethene-NO x photolysis experiments. For better simulation, some unknown mechanisms involving NO 2 sinks most likely need to be included.…”

Section: Propene-no X Experimentsmentioning

confidence: 73%

“…The artificial light produced by the black lamps gives a good representation of the ground-level solar light spectrum in the low-wavelength region, but they do not emit in the longer wavelength regions (> 400 nm) that photolyze some species, such as peroxy radicals or methylglyoxal in the range of 450-550 nm (Cocker et al, 2001a). However, because of the low-cost and efficient UV irradiation, black lamps are frequently used in environment chamber experiments (Cocker et al, 2001a;Carter et al, 2005;Hynes et al, 2005;Wu et al, 2007). The 135 black lamps are divided into 4 separately controlled groups; therefore the light intensity can be regulated to different levels.…”

Section: Light Sourcementioning

confidence: 99%

“…The parameters were determined by simulating clean air, low NO x -air, CO-NO x -air and CO-air irradiation experiments. Reaction rate coefficients of the N 2 O 5 hydrolysis to adsorbed HNO 3 , the photolysis of adsorbed HNO 3 to OH and NO 2 , and the wall loss of HNO 3 were assumed similar to those used by Hynes et al (2005). The reaction rate coefficient of the NO 2 dark, heterogeneous reaction NO 2 → 0.5 HONO + 0.5 wHNO 3 was determined to be 2.32 × 10 −6 s −1 from NO 2 dark decay experiments.…”

Section: Propene-no X Experimentsmentioning

confidence: 99%

“…The propene-NO x irradiation system was widely used as a reference system (Carter et al, 2005;Hynes et al, 2005) to evaluate the ability of a chamber to test the mechanisms for single organic-NO x irradiation systems. A set of four propene-NO x irradiation runs were carried out under dry conditions with a controlled temperature of 298.3 ± 0.5 K. The initial experimental conditions are listed in Table 4.…”

Section: Propene-no X Experimentsmentioning

confidence: 99%

See 3 more Smart Citations

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

100

View full text Add to dashboard Cite

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.

show abstract

Section: Propene-no X Experimentsmentioning

confidence: 73%

Section: Light Sourcementioning

confidence: 99%

Section: Propene-no X Experimentsmentioning

confidence: 99%

Section: Propene-no X Experimentsmentioning

confidence: 99%

See 2 more Smart Citations

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

100

View full text Add to dashboard Cite

show abstract

“…Piperazine photooxidation experiments were conducted in the CSIRO indoor smog chamber (Hynes et al, 2005;White et al, 2010), which is approximately 18 m 3 in size. Ozone was measured using a Teledyne-API M400E analyser.…”

Section: Chamber Experimentsmentioning

confidence: 99%