Validation of a gas chromatography/mass spectrometry method for the quantification of aerosolized Jet Propellant 8.
Jet Propellant 8 (JP-8) jet fuel is a kerosene-based fuel containing hundreds of hydrocarbons used by the military in NATO countries. Previous rodent inhalation studies carried out with aerosolized JP-8 never evaluated the exposure chamber atmosphere. For this reason, our laboratory developed an analytical method, with an accuracy of better than 80% and precision of better than 20%, for JP-8 aerosol and vapor samples using gas chromatography/mass spectrometry (GC/MS). A method was developed for quantification of selected individual components of JP-8 and for the total amount of JP-8 in aerosolized fuel. A 34 component surrogate hydrocarbon mixture (SHM) was developed and used for simultaneous analysis of the individual components. Three separate runs containing a standard curve and five replicates each at the selected concentrations were analyzed for both the SHM and neat JP-8. The resulting interday accuracy (100-percent relative error) and precision (relative standard deviation) values for the SHM were 86.5% or better and 8.0% or better, respectively. The intraday accuracy and precision values ranged from 99.29% to 84.50% and 0.97% to 12.4%, respectively. For the total amount of JP-8 in aerosol and vapor, the interday accuracy was 83.7% or better and interday precision was 7.0% or better. The intraday accuracy and precision values ranged from 94.8% to 80.4% and 2.4% to 10.5%, respectively. We then used this method to analyze samples collected from an inhalation chamber. From the data obtained, we are able to account for approximately 40-44% of the mass of the aerosol portion and 68-70% of the mass of the vapor portion. The aerosol represented 6-10% of the total mass of the aerosolized JP-8 fuel with the remaining portion being the vapor. From these experiments individual components were identified for further in vivo and in vitro toxicological testing.
Dietzel
Katherine D
KD
Interdisciplinary Toxicology Program, Department of Environmental Health Science, 206 Environmental Health Science Building, University of Georgia, Athens, GA 30602, USA.
Campbell
Jerry L
JL
Bartlett
Michael G
MG
Witten
Mark L
ML
Fisher
Jeffrey W
JW
D000336:Aerosols; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods*; D006838:Hydrocarbons / Q000032:analysis*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity
D000336:Aerosols; D006838:Hydrocarbons; C098607:JP8 aviation fuel