Surface Chemistry of Dihydromyrcenol (2,6-Dimethyl-7-Octen-2-Ol) with Ozone on Silanized Glass, Glass, and Vinyl Flooring Tiles

Details

• Personal Author:
  Ham JE ; Wells JR
• Description:
  The surface-phase reaction products of dihydromyrcenol (2,6-dimethyl-7-octen-2-ol) with ozone (O-3), air, or nitrogen (N-2) on silanized glass, glass and vinyl flooring tile were investigated using the recently published FACS (FLEC (Field and Laboratory Emission Cell) Automation and Control System). The FACS was used to deliver ozone (100 ppb), air, or N-2 to the surface at a specified flow rate (300 mL min(-1)) and relative humidity (50%) after application of a 2.0% dihydromyrcenol solution in methanol. Oxidation products were detected using the derivatization agents: O-(2,3,4,5,6-pentafluorobenzyl)hydroxylamine hydrochloride (PFBHA) and N,O-bis(trimethysilyl)trifluoroacetamide (BSTFA). The positively identified reaction products were glycolaldehyde, 2,6-dimethyl-5-heptenal, and glyoxal. The proposed oxidation products based on previously published VOC/O-3 reaction mechanisms were: 2,6-dimethyl-4-heptenal, 6-methyl-7-octen-2-one and the surface-specific reaction products: 6-methyl-6-hepten-2-one, 6-methyl-5-hepten-2-one, and 6-hydroxy-6-methylheptan-2-one. Though similar products were observed in gasphase dihydromyrcenol/O-3 reactions, the ratio, based on peak area, of the reaction products was different suggesting stabilization of larger molecular weight species by the surface. Emission profiles of these oxidation products over 72 h are also reported. [Description provided by NIOSH]
• Subjects:
  Air Pollution Air Pollution, Indoor Chemistry Environmental Health Environmental Monitoring Occupational Health Ozone Safety
• Keywords:
  Air-quality Author Keywords: Dihydromyrcenol Chemical-composition Chemical-indicators Chemical-properties Chemical-reactions Chemical-synthesis Emission-sources Exposure-assessment Exposure-levels Exposure-methods Gases Indoor-environmental-quality Oxidative-processes Quantitative-analysis Reaction Products Sampling-methods Statistical-analysis Surface-properties Surface Chemistry

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• 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:
  43
• Issue:
  26
• NIOSHTIC Number:
  nn:20035879
• Citation:
  Atmos Environ 2009 Aug; 43(26):4023-4032
• Contact Point Address:
  Jason E. Ham, Exposure Assessment Branch, Health Effects Laboratory Division, National Institute for Occupational Safety and Health, 1095 Willowdale Road, Morgantown, WV 26505
• Email:
  bvo2@cdc.gov
• CAS Registry Number:
  Ozone (CAS RN 10028-15-6)
• Federal Fiscal Year:
  2009
• NORA Priority Area:
  Services
• Peer Reviewed:
  True
• Source Full Name:
  Atmospheric Environment
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:3cad4b6040981795f706869e15e27c7c488d525b494302e666aaa5a91ae89846a90bceb711e17c3df0c2b3f600356154e562f8bdcc73b6db087033eea14e78d5
• Download URL:
  https://stacks.cdc.gov/view/cdc/187560/cdc_187560_DS1.pdf
• File Type:
  [PDF - 492.49 KB ]