Use of denuder/filter apparatus to investigate terpene ozonolysis

Details

• Personal Author:
  Wells JR
• Description:
  A denuder/filter apparatus was used to collect the gaseous and particulate reaction products from ozonlysis of a-pinene, limonene and a-terpineol in an effort to develop sampling techniques for characterizing indoor environment chemistry. Carboxylic acids found in the particulate phase were derivatized to 2,2,2-trifuoroethylamides by reaction with 3-ethyl-1-[3-(dimethylamino)propyl]carbodiimide hydrochloride (EDC) and 2,2,2-trifluoroethylamine hydrochloride (TFEA). Carbonyl compounds collected in both gas phase and particulate phase were derivatized to their respective oximes by reaction with O-(2,3,4,5,6-pentafluoro-benzyl)hydroxylamine hydrochloride (PFBHA). The ozonolysis of a-pinene yielded the carboxylic acids: cis-pinonic acid and pinic acid and the proposed carboxylic acids methanetricarboxylic acid and terpenylic acid; the carbonyls: 4-oxopentanal, norpinonaldehyde, pinon aldehyde and the proposed carbonyl methylidenepropanedial. The ozonolysis of limonene yielded the carboxylic acids: limonic acid and pinic acid and the carbonyls: 1-(4-methylcyclohex-3-en-1-yl)ethanone (4AMCH), glyoxal, methyl glyoxal, 4-oxopentanal and 6-oxo-3-(prop-1-en-2-yl)heptanal (IPOH). The ozonolysis of a-terpineol yielded the proposed carboxylic acids: terpenylic acid and homoterpenylic acid and the carbonyls: (5E)-6-hydroxyhept-5-en-2-one, methyl glyoxal and 4-oxopentanal. [Description provided by NIOSH]
• Subjects:
  Air Pollutants, Occupational Air Pollution Air Pollution, Indoor Dust Environmental Health Occupational Health Particulate Matter Safety
• Keywords:
  Air-quality Airborne-dusts Airborne-fibers Airborne-particles Carboxylic-acids Gases Indoor-air-pollution Indoor-environmental-quality Particulate-dust Particulates
• ISSN:
  1464-0325
• Document Type:
  Text
• Genre:
  Journal Article
• Place as Subject:
  OSHA Region 3 ; West Virginia
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  HELD - Health Effects Laboratory Division
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Volume:
  14
• Issue:
  3
• NIOSHTIC Number:
  nn:20040373
• Citation:
  J Environ Monit 2012 Mar; 14(3):1044-1054
• Contact Point Address:
  J. R. Wells, Exposure Assessment Branch, Health Effects Laboratory Division, National Institute for Occupational Safety and Health, 1095 Willowdale Road, Morgantown, WV, 26505
• Email:
  ozw0@cdc.gov
• CAS Registry Number:
  Glyoxal (CAS RN 107-22-2) ; Limonene (CAS RN 138-86-3) ; Methylglyoxal (CAS RN 78-98-8)
• Federal Fiscal Year:
  2012
• NORA Priority Area:
  Healthcare and Social Assistance ; Services
• Peer Reviewed:
  True
• Source Full Name:
  Journal of Environmental Monitoring
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:c6fd607b1976cd4928337828697b6fbea5cd8eaab84a9cdf3773e73df7cdd309825c47a685544a5217b1570b22ea2de674eb3af03044210019d682662a880343
• Download URL:
  https://stacks.cdc.gov/view/cdc/193276/cdc_193276_DS1.pdf
• File Type:
  [PDF - 306.52 KB ]