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The C6H6 benzene ring stretch peak (wave number 1587cm-1) occurred at 1575.90cm-1, 1578.21cm-1, and 1581.37cm-1, respectively.
The ground has a brownish hue, which is consistent with the GCMS detection of organic materials such as ethane ([C.sub.2][H.sub.6]), cyanogen ([C.sub.2][N.sub.2]), benzene (C6H6), and carbon dioxide (C[O.sub.2]).
But as the consumption of alternative fuels becomes comparable to that of the liquid fuels, other unregulated emissions like Methanol (CH3OH), Ethanol (C2H5OH), Formaldehyde (HCHO), Acetaldehyde (CH3CHO), Formic Acid (HCOOH), Acetic Acid (CH3COOH), Propene (C3H8), Ethylene (C2H4), Ethyne (C2H2) Benzene (C6H6), 1,3-Butadiene (1,3-C4H6), Toluene (C7H8), Butene (C4H8) etc.