BTEX detector's results good in oil identification

Gerry G. Calhoun New Paradigm Exploration Inc. Nashville James Hawkins New Paradigm Exploration Inc. Midland, Tex. The junior author with the MSI-301, used for detecting benzene, toluene, ethylbenzene, and xylene concentrations in soil gas (Fig. 2). Single-ring aromatic compounds, the BTEX group, are present in virtually every type of petroleum. They are gases at atmospheric and subsurface conditions, smaller than an ethane molecule and thus quite mobile. Yet the single attribute that makes benzene, toluene, ethylbenzene, and xylene superior to the alkanes (methane, ethane, etc.) as oil detectors is that microbes do not feed on aromatics...

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