[Rapid determination of low molecular weight aldehydes in air by gas chromatography].
This paper reports a method for determination of low molecular weight aldehydes in polluted air by GC-FID using a GDX-401 packed column (3 mm x 3 m). The advantages of this method are simple, rapid, accurate and sensitive. The method requires only 8 minutes for the whole analysis. In the concentration range of 1.7-442.4 mg/m3 for formaldehyde and 0.5-680 mg/m3 for acetaldehyde and propionaldehyde the calibration curves are linear. The minimun detectable amounts are 3.5 ng, 1 ng and 1 ng, and the average recoveries (n=5) are 89.4%, 89.6%, 88.1% for formaldehyde, acetaldehyde and propionaldehyde respectively. The quantitative determination is performed by external standard calibration method. The results of sample analysis are satisfactory.
Ren
Q
Q
Fujian Institute of Structure of Matter, the Chinese Academy of Sciences, Fuzhou, 350002.
Guo
Y
Y
D000393:Air Pollutants / Q000737:chemistry*; D000447:Aldehydes / Q000737:chemistry*; D002849:Chromatography, Gas / Q000379:methods*; D057230:Limit of Detection; D008970:Molecular Weight
D000393:Air Pollutants; D000447:Aldehydes