ISSN:
1573-2959
Keywords:
aldehydes
;
ambient air
;
coastal
;
diurnal
;
seasonal
Source:
Springer Online Journal Archives 1860-2000
Topics:
Energy, Environment Protection, Nuclear Power Engineering
Notes:
Abstract Aldehydes are an airborne byproduct of many industrialprocesses, vehicle transportation, and emissions fromnumerous natural sources. To characterize aldehydeconcentrations in ambient air of the Savannah, Georgiaarea, air samples for 3 aldehydes (formaldehyde,acetaldehyde, and propionaldehyde) were collected atfive sites on a monthly basis over a 12-month periodfrom December of 1995 through November 1996. Four ofthe sites were in central Savannah and the fifth sitewas located in a rural area about 56 km south ofSavannah. During each 24-hr sampling episode, sampleswere collected in two 12-hr periods approximatingdaylight and nighttime hours, following U.S. EPAMethod TO-11. Formaldehyde concentrations ranged from0.17 to 6.80 μg m-3, acetaldehydeconcentrations ranged from 0.07 to7.60 μg m-3, and propionaldehyde levels rangedfrom 0.02 to 9.10 μg m-3. On average, thefour sites in Savannah had higher aldehydeconcentrations than the rural site (2.0 versus1.2 μg m-3 for formaldehyde, 2.3 versus1.7 μg m-3 for acetaldehyde, and 1.2 versus1.0 μg m-3 for propionaldehyde). The daytimeconcentrations for formaldehyde and acetaldehyde werehigher than the nighttime levels. The data from allthe sites were within published worldwide backgroundvalues for aldehydes.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1006234610865
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