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This test will provide information on
the detailed chemical composition of middle distillates and
petroleum residuum products. Examples of its use include
differentiation of products such as diesel and coal tar, as
well as between two or more batches of diesel manufactured
from different crude oils or different petroleum
manufacturing processes. In addition to the information
typically gained from an EPA method 8270 analysis, the mass
spectroscopy data can be used to generate selective ion
scans. These scans provide “fingerprinting” GC traces for
classes of compounds including the alkylcyclohexanes,
alkanes, isoprenoids, bicyclanes, alkyl benzenes,
dibenzothiophenes, terpanes and steranes. Information on the
concentrations of the alkylated PNAs in addition to the PNA
data typically generated by an 8270 analysis can also be
generated using this analysis.
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