title: Measurement and source characteristics of carbonyl compounds in the atmosphere in Kaohsiung city, Taiwan.
abstract: The concentrations of eighteen atmospheric carbonyls species were measured by the LpDNPH-Cartridge and the microcomputer air sampling device at Nan-Chie (northern part) and Hsiung-Kong (southern part) sites in Kaohsiung city, southern Taiwan. These samples were then analyzed using a high performance liquid chromatography (HPLC). Measurements showed that the highest concentrations of carbonyls were formaldehyde (18.33 and 18.74 microg m(-3)) at the Nan-Chie and Hsiung-Kong site, followed by acetaldehyde (14.90 and 15.71 microg m(-3)). The concentrations of total carbonyls were higher at Hsiung-Kong site (66.96 microg m(-3)) than at Nan-Chie site (60.41 microg m(-3)). The concentrations of total carbonyls at Nan-Chie site (or Hsiung-Kong site) were 74.06 microg m(-3) (89.99 microg m(-3)) in summer and 37.14 microg m(-3) (46.50 microg m(-3)) in winter, due to the fact that photochemical activities are stronger in summer than in winter. The results of principal component analysis (PCA)/absolute principal component scores (APCS) suggest that the primary pollution sources at Nan-Chie were vehicle exhausts (gasoline and diesel engines), stationary emissions (petrochemical and food industry) and restaurant emissions, and the primary pollution sources at Hsiung-Kong were vehicle exhausts (gasoline and diesel engines), stationary emissions (metal assembly and petrochemical industry) and restaurant emissions.
authors.affiliation: Institute of Environmental Engineering, National Sun Yat-Sen University, 70 Lein_hei Road, Ku-San District, Kaohsiung 80424, Taiwan, ROC.
authors.forename: H K
authors.initials: HK
authors.lastname: Wang
authors.forename: C H
authors.initials: CH
authors.lastname: Huang
authors.forename: K S
authors.initials: KS
authors.lastname: Chen
authors.forename: Y P
authors.initials: YP
authors.lastname: Peng
authors.forename: C H
authors.initials: CH
authors.lastname: Lai
mesh_terms: D000395:Air Pollutants, Occupational / Q000032:analysis*; D000397:Air Pollution / Q000706:statistics & numerical data*; D002851:Chromatography, High Pressure Liquid; D016208:Databases, Factual; D004784:Environmental Monitoring; D019649:Food Industry; D009930:Organic Chemicals / Q000032:analysis*; D010578:Petroleum; D025341:Principal Component Analysis; D011786:Quality Control; D013624:Taiwan; D001335:Vehicle Emissions / Q000032:analysis; D014887:Weather
chemical_list: D000395:Air Pollutants, Occupational; D009930:Organic Chemicals; D010578:Petroleum; D001335:Vehicle Emissions