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Ultrafast high-performance liquid chromatographic separation of aldehyde and ketone 2,4-dinitrophenylhydrazones was carried out on reversed-phase 1.5 μm non-porous silica. Separation times of DNPH and a series of 12 aldehyde and ketone derivatives or potentially interfering compounds were less than 4 min compared to approximately 15 min using conventional columns. Formation of the formaldehyde derivative...
Microplate photometric analysis has been carried out to investigate the suitability of two chemically different methods based on N-methylbenzo-thiazolon-(2)-hydrazone and 4-amino-3-hydrazino-5-mercapto-1,2,4-triazole for the determination of aldehydes in disinfectant solutions. The microplate methods have been developed and characterized with regard to their limits of detection and the stability...
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