Method for determination of some soluble atmospheric carbonyl compounds

Journal Article · Thu Apr 01 00:00:00 EST 1993 · Environmental Science and Technology; (United States)

DOI:https://doi.org/10.1021/es00041a020· OSTI ID:6074510

Lee, Y N; Zhou, X ^[1]

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1. Brookhaven National Lab., Upton, NY (United States)

A technique was developed for the measurement of soluble atmospheric carbonyl compounds, which uses a pyrex coil gas-liquid scrubber sampler in conjunction with a high-performance liquid chromatograph equipped with a UV-visible detector for separation and identification following derivatization with 2,4-dinitrophenylhydrazine. Carbonyls exhibiting a Henry's law solubility similar to or greater than that of formaldehyde (FA) can be determined by this method; these include FA, glycolaldehyde (GA), glyoxal (GL), and methylglyoxal (MG). Based on liquid standards and field-developed chromatographic characteristics, the limits of detection are about 0.005 ppb (in the gas phase) for MG, about 0.01 ppb for GL, and about 0.02 ppb for FA and GA. Because of the short air-liquid contact time in the coil sampler (smaller than 10 s), interferences from aqueous-phase reactions of ozone are insignificant. Also, at the low pH of the scrubbing solution, interference resulting from reactions of carbonyls with S(IV) is unimportant. 43 refs., 7 figs., 3 tabs.

• DOE Contract Number: AC02-76CH00016
• OSTI ID: 6074510
• Journal Information: Environmental Science and Technology; (United States), Vol. 27:4; ISSN 0013-936X
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
54 ENVIRONMENTAL SCIENCES
ALDEHYDES
CHROMATOGRAPHY
DERIVATIZATION
SCRUBBING
AIR POLLUTION MONITORING
EXPERIMENTAL DATA
FORMALDEHYDE
GLYOXAL
OZONE
CHEMICAL REACTIONS
DATA
INFORMATION
MONITORING
NUMERICAL DATA
ORGANIC COMPOUNDS
SEPARATION PROCESSES
400102* - Chemical & Spectral Procedures
540120 - Environment
Atmospheric- Chemicals Monitoring & Transport- (1990-)