Identification of chemical interferences in aldehyde and ketone determination using dual-wavelength detection.


A method for the rapid and convenient identification of chemical interferences in the determination of aldehydes and ketones in air samples using the 2,4-dinitrophenylhydrazine (DNPH) method is described. The ratio of absorptions at 360 and 300 nm is characteristic for groups of related aldehydes and ketones as well as for the main interferents. It has been… (More)
DOI: 10.1021/ac960319v


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