Record Display for the EPA National Library Catalog


Main Title Use of 2,4-Dinitrophenlhydrazine to Determine Carbonyl Compounds in Air (Primenenie 2,4-dinitrofenilgidrazine dlya Opredeleniya Karbonilnykh Soedinenii v Vozdukhe).
Author Piningina., I. A. ;
CORP Author Environmental Protection Agency, Research Triangle Park, N.C. Translation Services Section.
Year Published 1972
Report Number EPA-TR-73-171 ;APTIC-40699;
Stock Number PB-259 684-T
Additional Subjects Carbonyl compounds ; Trace elements ; Chromatographic analysis ; Colorimetric analysis ; Air pollution ; Hydrazines ; Chemical analyses ; Translations ; USSR ; Air pollution detection ; Hydrazine/dinitrophenyl
Library Call Number Additional Info Location Last
NTIS  PB-259 684-T Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 9p
2,4-Dinitrophenylhydrazine(2,4-DNPH) is a selective reagent to carbonyl compounds. It readily reacts with high and low, saturated and unsaturated, aliphatic and aromatic carbonyl compounds, forming hydrazones. Therefore, 2,4-DNPH is widely used for colorimetric and chromatographic determination of various carbonyl compounds and their isomers in organic liquids and water. Until recently, 2,4-DNPH was not used to analyze air, where carbonyl compounds might be contained in microquantities. In analyzing atmospheric air, the entire sample (5-10 ml) should be used because of the low concentrations of the substances being studied. A limited amount (0.05 - 0.1 ml or less) can be taken for chromatographic analysis. Therefore, the sample must be concentrated. The results of our studies agree completely with the data of Lonhmon. Further chromatographic analysis showed that, along with hexane hydrazones, only a small part of 2,4-DNPH is eliminated from the acid solution, which appears on the chromatogram in the form of 1 spot at the start line and does not interfere with the analysis of microquantities of carbonyl compounds.