Nondestructive analytical procedure for simultaneous estimation of the major classes of hydrocarbon constituents of finished gasolines
作者： Jeffrey J. Kelly , James B. Callis
DOI: 10.1021/AC00213A019
关键词:
摘要: Near-infrared (NIR) spectroscopy in both the short-wave-length (700-1,200 nm) region (SW-NIR) and long-wave-length (1,100-2,500 (LW-NIR) is used for simultaneous estimation of major classes hydrocarbon constituents (aliphatics, aromatics, olefinics) finished gasolines. The test requires 1-3 cm{sup 3} gasoline, nondestructive, takes only a few minutes to perform. Two multivariate calibration approaches have been employed data reduction: stagewise multilinear regression partial least squares. Both methods yield comparable results. Success critically dependent upon training sets well-characterized samples which NIR spectra constituent values by reference are available. Accordingly, use near-infrared suggested as rapid method quality parameters
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