Document Detail


Partition coefficients for nonane and its isomers in the rat.
MedLine Citation:
PMID:  20919799     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Jet Fuel 8 (JP-8) is a major fuel source used by US and NATO military. JP-8 is a complex mixture of aliphatic and aromatic isomers of hydrocarbons. Tissue/blood partition coefficient (PC) values are chemical-specific parameters used in modeling the kinetic behavior of chemicals. The partition coefficient values for n-alkanes tend to increase with the increasing carbon number, but less is known about the trend for isomers of n-alkanes. PC values were obtained for the n-alkane nonane (C9) and five of its isomers, namely 3-methyloctane, 4-ethylheptane, 2,3-dimethylheptane, 2,2,4-trimethylhexane, 2,2,4,4-tetramethylpentane. The blood:air and tissue:air PC values correlated with the published log octanol/water (O:W) PC values for n-nonane and its isomers. Experimentally determined blood:air and tissue:air PC values for n-nonane with the largest O:W value were greatest and smallest for the isomer 2,2,4,4-tetramethylpentane with the lowest O:W value. As expected the fat tissue had the highest PC values and muscle the lowest for n-nonane and its isomers. For each tissue, a linear relationship was observed between the tissue/blood PC values for the isomers of n-nonane and n-nonane. This suggests that tissue/blood PC values for all isomers of an alkane could be estimated using data collected from only a sub-set of alkanes of equal carbon number. These reported tissue/blood PC values will support the development of a jet fuel physiologically-based pharmacokinetic (PBPK) model.
Authors:
G Joshi; R T Tremblay; S A Martin; J W Fisher
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, Non-P.H.S.     Date:  2010-10-04
Journal Detail:
Title:  Toxicology mechanisms and methods     Volume:  20     ISSN:  1537-6524     ISO Abbreviation:  Toxicol. Mech. Methods     Publication Date:  2010 Nov 
Date Detail:
Created Date:  2010-10-22     Completed Date:  2011-02-02     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101134521     Medline TA:  Toxicol Mech Methods     Country:  England    
Other Details:
Languages:  eng     Pagination:  594-9     Citation Subset:  IM    
Affiliation:
College of Public Health, Department of Environmental Health Science, University of Georgia, Athens, Georgia, USA.
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MeSH Terms
Descriptor/Qualifier:
Adipose Tissue / metabolism
Alkanes / blood,  chemistry,  pharmacokinetics*
Animals
Hydrocarbons / blood,  chemistry,  pharmacokinetics*
Isomerism
Male
Models, Biological
Models, Chemical
Rats
Rats, Inbred F344
Chemical
Reg. No./Substance:
0/Alkanes; 0/Hydrocarbons; 0/JP8 aviation fuel; 111-84-2/nonane

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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