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KMID : 0385520120250040214
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Analytical Science & Technology
2012 Volume.25 No. 4 p.214 ~ p.222
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Analysis of biodiesel quality based on infrared spectroscopy and multivariate statistics
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Kim Hye-sil
Liu J-Jay
Cho Hyun-Woo
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Abstract
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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.
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KEYWORD
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biodiesel, multivariate calibration, infrared spectroscopy, spectrum pre-processing, Savitzky-Golay method
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