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首页> 外文期刊>Fuel >Analysis of biodiesel-diesel blends using ultrafast gas chromatography (UFGC) and chemometric methods: Extending ASTM D7798 to biodiesel
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Analysis of biodiesel-diesel blends using ultrafast gas chromatography (UFGC) and chemometric methods: Extending ASTM D7798 to biodiesel

机译：使用超快速气相色谱（UFGC）和化学计量学方法分析生物柴油-柴油混合物：将ASTM D7798扩展至生物柴油

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Ultrafast gas chromatography (UFGC) along with supervised and unsupervised chemometric methods were utilized for evaluation of biodiesel-diesel blended fuels. A variety of biodiesel feedstocks (soybean, tallow, canola, safflower, sunflower, camelina, flaxseed, etc.) and concentrations (1-20%) were evaluated. The method, which uses a short nonpolar column, falls within ASTM D7798 requirements for diesel and extends the method to include biodiesel-diesel blended fuels. Using Principal Components Analysis (PCA), samples clustered based on concentration and diesel type, and differences in plant and animal feedstocks were apparent. Biodiesel concentration was accurately assessed using Partial Least Squares (PLS) on a training set for B0-B20, while predictions were made with some success on a set of commercial and lab unknowns. k Nearest Neighbors (kNN) was used to describe and predict concentration, plant versus animal feedstock, and to identify biodiesel blends. The combination of chemometric methods alongside UFGC proves an effective and fast technique for the analysis of biodiesel source and composition in biodiesel-diesel blended fuels.
机译：超快气相色谱（UFGC）以及有监督和无监督的化学计量方法被用于评估生物柴油-柴油混合燃料。评价了各种生物柴油原料（大豆，牛脂，低芥酸菜子，红花，向日葵，山茶花，亚麻籽等）和浓度（1-20％）。该方法使用短的非极性色谱柱，符合ASTM D7798对柴油的要求，并将该方法扩展到包括生物柴油-柴油混合燃料。使用主成分分析（PCA），样品可以根据浓度和柴油类型进行聚类，并且动植物原料之间的差异也很明显。使用偏最小二乘（PLS）在B0-B20的训练集上准确评估了生物柴油的浓度，同时对一系列商业和实验室未知物进行了成功的预测。 k最近邻（kNN）用于描述和预测植物原料与动物原料的浓度，以及鉴定生物柴油混合物。化学计量学方法与UFGC的结合证明了一种有效，快速的技术，可用于分析生物柴油-柴油混合燃料中的生物柴油来源和组成。

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