Seasonal variations in ambient atmospheric levels of formaldehyde and acetaldehyde

A simple technique is described for determining ambient atmospheric levels of formaldehyde and acetaldehyde by using impinger collection in acidified 2,4-dinitrophenyl-hydrazine/acetonitrile solution and direct high-pressure liquid chromatography with UV absorbance detection of the corresponding phe...

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Veröffentlicht in:	Environ. Sci. Technol.; (United States) 1984-09, Vol.18 (9), p.723-726
Hauptverfasser:	Tanner, Roger L, Meng, Zhaokun
Format:	Artikel
Sprache:	eng
Schlagworte:	500200 - Environment, Atmospheric- Chemicals Monitoring & Transport- (-1989) ACETALDEHYDE AIR POLLUTION AIR SAMPLERS ALDEHYDES Applied sciences Atmospheric pollution CHROMATOGRAPHY COASTAL REGIONS DATA Dispersed sources and other ENVIRONMENTAL SCIENCES Exact sciences and technology EXPERIMENTAL DATA FORMALDEHYDE INFORMATION LIQUID COLUMN CHROMATOGRAPHY MEASURING METHODS MONITORING NUMERICAL DATA ORGANIC COMPOUNDS POLLUTION Pollution sources. Measurement results SAMPLERS SEASONAL VARIATIONS SEPARATION PROCESSES VARIATIONS
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Beschreibung
Zusammenfassung:	A simple technique is described for determining ambient atmospheric levels of formaldehyde and acetaldehyde by using impinger collection in acidified 2,4-dinitrophenyl-hydrazine/acetonitrile solution and direct high-pressure liquid chromatography with UV absorbance detection of the corresponding phenylhydrazone solution on reversed-phase columns. A limit of detection of approx. 1 ppb for 1-h impinger collections is obtained. Data from a coastal NE US site show no discernible diurnal trends, but strong seasonal variations in the levels of both aldehydes are observed, with summer maxima and winter minima. Formaldehyde/acetaldehyde ratios are relatively high (>4) in winter and spring and low (
ISSN:	0013-936X 1520-5851
DOI:	10.1021/es00127a017