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T.E. KLEINDIENST, E.W. CORSE, F.T. BLANCHARD, W.A. LONNEMAN
Citation:
AREAL. T.E. KLEINDIENST, E.W. CORSE, F.T. BLANCHARD, W.A. LONNEMAN. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/A-94/165.
Description:
Carbonyl compounds are important constituents in urban and global atmospheres. n urban atmospheres these compounds frequently serve to initiate photochemical smog and certainly sustain the chain reactions leading to ozone formation. easurement of carbonyl compounds under atmospheric conditions requires techniques that are both sensitive and free of interferences. or low molecular-weight aldehydes and ketones derivation techniques with 2-4-dinitrophenylhydrazine (DNPH) have been used with some frequency in recent times. n this study, DNPH coated on two of the most popular substrates (silica gel and C18) have been examined for measuring C1 to C4 carbonyl components found in the atmosphere. he study is designed to evaluate the sensitivity, reproducibility, and effect of interferences, particularly ozone, on carbonyl measurements using these systems.