Analysis and concentration variability of carbonyl compounds in Qingdao atmosphere.

Air samples were collected at six urban sites in Qingdao during December 1997~July 1998. The concentrations of 11 carbonyl compounds of aldehydes and ketones were determined in different season and time. The average concentrations of formaldehyde, acetaldehyde, acetone and the total carbonyls were 3.64, 4.18, 2.50 and 13.9mg/m3 in winter and 9.95, 7.00, 5.75 and 26.9mg/m3 in summer, respectively,…