scholarly journals Direct kinetics study of CH2OO + methyl vinyl ketone and CH2OO + methacrolein reactions and an upper limit determination for CH2OO + CO reaction

2018 ◽  
Vol 20 (29) ◽  
pp. 19373-19381 ◽  
Author(s):  
Arkke J. Eskola ◽  
Malte Döntgen ◽  
Brandon Rotavera ◽  
Rebecca L. Caravan ◽  
Oliver Welz ◽  
...  
Keyword(s):  
Carbonyl Compounds ◽  
Vinyl Ketone ◽  
Methyl Vinyl Ketone ◽  
Kinetics Study ◽  
Methyl Vinyl ◽  
Upper Limit ◽  
Secondary Ozonide

Reactions of Criegee intermediate CH2OO with unsaturated carbonyl compounds form secondary ozonide products.

Development of DNPH/HPLC method for the measurement of carbonyl compounds in the aqueous phase: applications to laboratory simulation and field measurement

2009 ◽  
Vol 6 (5) ◽  
pp. 389 ◽  
Author(s):  
Hongli Wang ◽  
Xuan Zhang ◽  
Zhongming Chen
Keyword(s):  
Aqueous Phase ◽  
Carbonyl Compounds ◽  
Global Climate ◽  
Water Solution ◽  
Field Measurements ◽  
Hplc Method ◽  
Vinyl Ketone ◽  
Methyl Vinyl Ketone ◽  
Laboratory Simulation ◽  
Methyl Vinyl

Environmental context. Carbonyl compounds, a class of oxygenated organic matter, are crucial participants in atmospheric processes. Recently, studies have shown that the aqueous-phase processes of carbonyls have an important contribution to the formation of secondary organic aerosol (SOA), which is considered to have a significant impact on global climate change and human health. We developed the classical DNPH/HPLC method to characterise the aqueous-phase carbonyls, especially methacrolein, methyl vinyl ketone, glyoxal, and methylglyoxal, which are important precursors of SOA, in order to better understand the pathways of SOA formation in the atmosphere. Abstract. The DNPH/HPLC method for characterising monocarbonyls and dicarbonyls in the aqueous phase has been developed. A series of experiments have been carried out using eight atmospheric ubiquitous carbonyl compounds as model dissolved compounds in both acetonitrile and water solution to obtain the optimal derivatisation and analysis qualifications. Compared with the analysis of carbonyls dissolved in acetonitrile, the influence of acidity on the derivatisation efficiency should be carefully considered in determining carbonyls in water and the optimal acidity is pH 2.0. We find that methyl vinyl ketone (MVK) transforms to crotonaldehyde during the derivatisation reaction. This transformation can be controlled to a minor degree by increasing the mixing ratio of DNPH to MVK up to 100 : 1. This improved method has been satisfactorily applied to laboratory simulations and field measurements for better understanding the carbonyl chemistry in the atmosphere.

Copolymerization of methyl vinyl ketone with styrene in the presence of cobalt(II) nitrate

1991 ◽  
Vol 47 (1) ◽  
pp. 329-336 ◽  
Author(s):  
Seizo Masuda ◽  
Keiji Minagawa ◽  
Masami Tanaka ◽  
Yutaka Asahi
Keyword(s):  
Vinyl Ketone ◽  
Methyl Vinyl Ketone ◽  
Methyl Vinyl
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