Determination of aromatics in hydrocarbons by near infrared...

Details Determination of aromatics in hydrocarbons by near infrared... Determination of aromatics in hydrocarbons by near infrared...

G - Physics

01

N

G01N 21/35 (2006.01) G01N 33/28 (2006.01)

Patent

CA 2089096

2089096 9210738 PCTABS00013 Mid-distillate hydrocarbon fuels, preferably having initial boiling points above 350 ·F, are separated e.g. by prep-HPLC into non-aromatic and aromatic fractions which are used to set 0 % aromatics (the non-aromatics) and 100 % aromatics (the aromatics) on an NIR spectrophotometer. From NIR aromatic band absorbances of unknown samples, their percent aromatics is determined using this two-point calibration and the Beer-Lambert equation. Preferred NIR bands of 1650-1700 and 2120-2256 exhibit excellent correlation with aromatics content.

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