Linearity of near-infrared spectra of alkanes

Near-infrared (NIR) spectroscopy is used to monitor a large variety of proc ess flow streams. Hydrocarbons with their strong and resolvable SLR spectra l signatures are good candidate analytes. NIR has been exploited to monitor many chemical properties for optimal hydrocarbon utilization particularly for well-characterized flow streams of small variability for end users. The utility of NIR in the contest of the production of hydrocarbon resources n ecessitates application over a much broader range of how stream conditions. Here we enamine the spectral impact of variable temperature, pressure, and composition to determine the rohustness of NIR methods in upstream applica tions.