Seasonal variations in ambient atmospheric levels of formaldehyde and acetaldehyde
Journal Article
·
· Environ. Sci. Technol.; (United States)
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 (<2) in summer and fall.
- Research Organization:
- Brookhaven National Lab., Upton, NY
- DOE Contract Number:
- AC02-76CH00016
- OSTI ID:
- 6351785
- Journal Information:
- Environ. Sci. Technol.; (United States), Journal Name: Environ. Sci. Technol.; (United States) Vol. 18:9; ISSN ESTHA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
500200* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ACETALDEHYDE
AIR POLLUTION
AIR SAMPLERS
ALDEHYDES
CHROMATOGRAPHY
COASTAL REGIONS
DATA
EQUIPMENT
EXPERIMENTAL DATA
FORMALDEHYDE
INFORMATION
LIQUID COLUMN CHROMATOGRAPHY
MEASURING METHODS
MONITORING
NUMERICAL DATA
ORGANIC COMPOUNDS
POLLUTION
SAMPLERS
SEASONAL VARIATIONS
SEPARATION PROCESSES
VARIATIONS
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ACETALDEHYDE
AIR POLLUTION
AIR SAMPLERS
ALDEHYDES
CHROMATOGRAPHY
COASTAL REGIONS
DATA
EQUIPMENT
EXPERIMENTAL DATA
FORMALDEHYDE
INFORMATION
LIQUID COLUMN CHROMATOGRAPHY
MEASURING METHODS
MONITORING
NUMERICAL DATA
ORGANIC COMPOUNDS
POLLUTION
SAMPLERS
SEASONAL VARIATIONS
SEPARATION PROCESSES
VARIATIONS