PMID- 15046331
OWN - NLM
STAT- MEDLINE
DCOM- 20040624
LR  - 20190714
IS  - 0013-936X (Print)
IS  - 0013-936X (Linking)
VI  - 38
IP  - 5
DP  - 2004 Mar 1
TI  - Indoor and outdoor air concentrations and phase partitioning of perfluoroalkyl 
      sulfonamides and polybrominated diphenyl ethers.
PG  - 1313-20
AB  - Perfluoroalkyls (PFAs) and polybrominated diphenyl ethers (PBDEs) are two classes 
      of emerging persistent organic pollutants (POPs) that are widely used in domestic 
      and workplace products. These compounds also occur in remote locations such as 
      the Arctic where they are accumulated in the food chain. This study makes 
      connections between indoor sources of these chemicals and the potential and mode 
      for their transport in air. In the case of the PFAs, three perfluoralkyl 
      sulfonamides (PFASs) were investigated--N-methyl perfluorooctane 
      sulfonamidoethanol (MeFOSE), N-ethyl perfluorooctane sulfonamidoethanol (EtFOSE), 
      and N-methyl perfluorooctane sulfonamidethylacrylate (MeFOSEA). These are 
      believed to act as precursors that eventually degrade to perfluorooctane 
      sulfonate (PFOS), which is detected in samples from remote regions. High-volume 
      samples were collected for indoor and outdoor air to investigate the source 
      signature and strength. Mean indoor air concentrations (pg/m3) were 2590 
      (MeFOSE), 770 (EtFOSE), and 630 (sigmaPBDE). The ratios of concentration between 
      indoor and outdoor air were 110 for MeFOSE, 85 for EtFOSE, and 15 for sigmaPBDE. 
      The gas and particle phases were collected separately to investigate the 
      partitioning characteristics of these chemicals. Measured particulate percentages 
      were compared to predicted values determined using models based on the 
      octanol-air partition coefficient (K(OA)) and supercooled liquid vapor pressure 
      (pL(o)); these models were previously developed for nonpolar, hydrophobic 
      chemicals. To make this comparison for the three PFASs, it was necessary to 
      measure their K(OA) and vapor pressure. K(OA) values were measured as a function 
      of temperature (0 to +20 degrees C). Values of log K(OA) at 20 degrees C were 
      7.70, 7.78, and 7.87 for MeFOSE, EtFOSE, and MeFOSEA, respectively. Partitioning 
      to octanol increased at colder temperatures, and the enthalpies associated with 
      octanol-air transfer (deltaH(OA), kJ/mol) were 68-73 and consistent with previous 
      measurements for nonpolar hydrophobic chemicals. Solid-phase vapor pressures 
      (pS(o)) were measured at room temperature (23 degrees C) by the gas saturation 
      method. Values of pS(o) (Pa) were 4.0 x 10(-4), 1.7 x 10(-3), and 4.1 x 10(-4), 
      respectively. These were converted to pL(o) for describing particle-gas exchange. 
      Both the pL(o)-based model and the K(OA) model worked well for the PBDEs but were 
      not valid for the PFASs, greatly underpredicting particulate percentages. These 
      results suggest that existing K(OA)- and pL(o)-based models of partitioning will 
      need to be recalibrated for PFASs.
FAU - Shoeib, Mahiba
AU  - Shoeib M
AD  - Meteorological Service of Canada, Environment Canada, 4905 Dufferin Street, 
      Toronto, Ontario, Canada M3H 5T4.
FAU - Harner, Tom
AU  - Harner T
FAU - Ikonomou, Michael
AU  - Ikonomou M
FAU - Kannan, Kurunthachalam
AU  - Kannan K
LA  - eng
PT  - Journal Article
PL  - United States
TA  - Environ Sci Technol
JT  - Environmental science & technology
JID - 0213155
RN  - 0 (Air Pollutants)
RN  - 0 (Ethers)
RN  - 0 (Fluorocarbons)
RN  - 0 (Polybrominated Biphenyls)
RN  - 0 (Sulfonamides)
SB  - IM
CIN - Environ Sci Technol. 2004 Mar 1;38(5):80A. PMID: 15046317
MH  - Air Pollutants/*analysis
MH  - Air Pollution, Indoor/*analysis
MH  - Calibration
MH  - Environmental Monitoring
MH  - Ethers/analysis
MH  - Fluorocarbons/*analysis
MH  - *Models, Theoretical
MH  - Polybrominated Biphenyls/*analysis
MH  - Sulfonamides/*analysis
MH  - Temperature
EDAT- 2004/03/30 05:00
MHDA- 2004/06/25 05:00
CRDT- 2004/03/30 05:00
PHST- 2004/03/30 05:00 [pubmed]
PHST- 2004/06/25 05:00 [medline]
PHST- 2004/03/30 05:00 [entrez]
AID - 10.1021/es0305555 [doi]
PST - ppublish
SO  - Environ Sci Technol. 2004 Mar 1;38(5):1313-20. doi: 10.1021/es0305555.