Determination of aldehydes and ketones in air samples using cryotrapping sampling

• Published in: Chemosphere (Oxford) Vol. 44; no. 4; pp. 701 - 708
• Main Authors: Levart, A, Veber, M
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier Ltd 01-08-2001; Elsevier
• Subjects: Acetaldehyde; Acetone; Air Pollutants - analysis; Air sampling; Aldehydes - analysis; Analysis methods; Applied sciences; Atmospheric pollution; Benzaldehyde; Butanal; Carbonyls; Chromatography, High Pressure Liquid; Cities; Derivatization; Dinitrophenylhydrazine derivatives; Environmental Monitoring - instrumentation; Environmental Monitoring - methods; Exact sciences and technology; Formaldehyde; HPLC; Ketones - analysis; Pollution; Propanal; Europe; Slovenia; Air sampling; Benzaldehyde; Butanal; Dinitrophenylhydrazine derivatives; Derivatization; Propanal; Formaldehyde; HPLC; Carbonyls; Acetone; Acetaldehyde; Chemical analysis; HPLC chromatography; Operating mode; Air quality; Volatile organic compound; Urban area; Aldehyde; Ketone; Cryogenic temperature; Optimization; Surveillance; Air pollution; Sampling
• ISSN: 0045-6535; 1879-1298
• DOI: 10.1016/S0045-6535(00)00369-6

A cryotrapping sampling technique using glass traps cooled in liquid nitrogen for monitoring carbonyl compounds in air has been developed. Sampling was followed by derivatization by addition of acidified 2,4-dinitrophenyl hydrazine (DNPH) solution to the traps and an aliquot of the sample was analysed with a high performance liquid chromatograph system (HPLC), equipped with a diode array detector. The procedure was optimised concerning derivatization conditions and analytical parameters on formaldehyde, acetaldehyde, propanal, acetone, butanal and benzaldehyde. The technique was applied in monitoring their concentration in the urban atmosphere in Ljubljana.