Dq1000 Mass Spectra Examples

Individual mass spectra from the dq1000 can be used in the same way that high resolution GC spectra are used: to provide a visual and diagnostic chemical fingerprint of the fluid. Examples above illustrate hydrocarbon shows of increasing wetness and variable aromaticity. Presence of BTEX compounds suggests concentration of these species via solubility in water, and forms the basis of the proximity to pay concept discussed later.
P = C4+ paraffin
N = C4+ naphthene
B = Benzene
T = Toluene
X = Xylenes
Inclined yellow line roughly connects n-alkane peaks and indicates shallowing of slope with increased percentage of higher hydrocarbons (wetness).

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