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http://dx.doi.org/10.5806/AST.2012.25.4.214

Analysis of biodiesel quality based on infrared spectroscopy and multivariate statistics  

Kim, Hye-Sil (Department of Chemical Engineering, Pukyong National University)
Cho, Hyun-Woo (Department of Industrial & Management Engineering, Daegu University)
Liu, J. Jay (Department of Chemical Engineering, Pukyong National University)
Publication Information
Analytical Science and Technology / v.25, no.4, 2012 , pp. 214-222 More about this Journal
Abstract
ASTM (American Society for Testing and Materials) D6751-10 suggests analytical methods as well as specifications for biodiesel quality. However, it is expensive and time-consuming to follow the ASTM testing methods to analyze biodiesel and various impurities. This paper develops a quantitative analysis system for biodiesel and impurities based on Infrared spectroscopy and a multivariate statistical method, PLS (partial least squares). In addition, four different pre-processing techniques were compared for spectrum correction and noise reduction. Savitzky-Golay pre-processing showed the best performance.
Keywords
biodiesel; multivariate calibration; infrared spectroscopy; spectrum pre-processing; Savitzky-Golay method;
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