The occurrence of plant wax constituents in airborne particulate matter in an urbanized area

Airborne particulate matter was collected by filtration in an urbanized area at Delft (The Netherlands) during 1981. The samples were extracted by means of cyclohexane and analysed by GC/MS. Differences were observed between summer and winter samples. Besides a different n-alkane pattern, the summer samples contained large quantities of long-chain polar aliphatic compounds. The identification of these compounds was carried out by means of electron impact, chemical ionization and high resolution mass spectrometry. These compounds are known plant was constituents. The contribution of the plant wax constituents to the total amount of analysed compounds in the cyclohexane extracts was estimated at about 40 % in the summer.     

The occurrence of Rovral and Permethrin in airborne particulate matter

A fungicide (Rovral) and an insecticide (Permethrin) were identified by GC/MS in cyclohexane extracts of airborne particulate matter sampled by filtration at Delft (The Netherlands) during 1981.