Geraniol (2,6-Dimethyl-2,6-Octadien-8-Ol) Reactions with Ozone and OH Radical: Rate Constants and Gas-Phase Products

Details

• Personal Author:
  Forester CD ; Ham JE ; Wells JR
• Description:
  The bimolecular rate constants, kOH+geraniol, (231+/-58)×10-12 cm3 molecule-1 s-1 and kO3+geraniol, (9.3+/-2.3)×10-16 cm3 molecule-1 s-1, were measured using the relative rate technique for the reaction of the hydroxyl radical (OH) and ozone (O3) with 2,6-dimethyl-2,6-octadien-8-ol (geraniol) at (297+/-3) K and 1 atmosphere total pressure. To more clearly define part of geraniol's indoor environment degradation mechanism, the products of the geraniol+OH and geraniol+O3 reactions were also investigated. The identified geraniol+OH and geraniol+O3 reaction products were: acetone, hydroxyacetaldehyde (glycolaldehyde, HC(O)CH2OH), ethanedial (glyoxal, HC(O)C(O)H), and 2-oxopropanal (methylglyoxal, CH3C(O)C(O)H). The use of derivatizing agents O-(2,3,4,5,6-pentafluorobenzyl)hydroxylamine (PFBHA) and N,O-bis(trimethylsilyl) trifluoroacetamide (BSTFA) were used to propose 4-oxopentanal as the other major geraniol+OH and geraniol+O3 reaction product. The elucidation of this other reaction product was facilitated by mass spectrometry of the derivatized reaction products coupled with plausible geraniol+OH and geraniol+O3 reaction mechanisms based on previously published volatile organic compound+OH and volatile organic compound+O3 gas-phase reaction mechanisms. [Description provided by NIOSH]
• Subjects:
  Atmosphere Environmental Health Mass Spectrometry Occupational Health Safety
• Keywords:
  Atmosphere-analyzers Atmospheric-pressure Environmental-factors Gases Mass-spectrometry Organic-compounds
• ISSN:
  1352-2310
• 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:
  41
• Issue:
  6
• NIOSHTIC Number:
  nn:20031403
• Citation:
  Atmos Environ 2007 Feb; 41(6):1188-1199
• Contact Point Address:
  Exposure Assessment Branch, Health Effects Laboratory Division, National Institute for Occupational Safety and Health, 1095 Willowdale Road, Morgantown, WV 26505, USA
• Email:
  ozw0@cdc.gov
• Federal Fiscal Year:
  2007
• Peer Reviewed:
  True
• Source Full Name:
  Atmospheric Environment
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:17b7a1478248d66e2a3fbb7db96af32c8ab3a21458b5bc7d017cb6e779c60b12124b1c56b7137c14b57fcd22eefc42c62e6260f47cb8517db5872dd9b3fa5da8
• Download URL:
  https://stacks.cdc.gov/view/cdc/191649/cdc_191649_DS1.pdf
• File Type:
  [PDF - 303.60 KB ]