Abstract
This paper describes the gas chromatographic (GC) and combined gas chromatographic/mass spectrometric (GC/MS) measurements of organic compounds extracted from airborne particles, which were collected in Chengdu, China. Possible sources of the compounds are indicated. The particulate samples were collected on glass-fiber filters using a medium-volume aerosol sampler, and followed by dichloromethane extraction in a Soxhlet's extractor. Each of the extracts was concentrated to one ml atroom temperature under reduced pressure and by blowing nitrogen gas, and subjected to GC and GC/MS. About 100 peaks appeared on the gas chromatogram and 77 compounds were identified by means of the GC/MS. Main pollutants of 27 kinds were determined quantitatively by GC. Large amounts of nicotine and benzo [a] pyrene were found in the airborne particles. The results showed that the air pollution in Chengdu area is in a status to be improved immediately.
