用气相色谱和主成分分析表征精炼产物

Characterizing Products from a Refinery by GC and Principal Components Analysis

Abstract

In a refinery, there can be no waste; everything that comes into the facility has to be made into a product. Some products
such as gasoline go directly to the consumer, while others are prepared as intermediates for other product blends. Of course,
quality control of these products is critical. Gas chromatography is one of the traditional tools utilized to evaluate product composition. This case study shows how performing multivariate analysis on chromatographic profiles can be a reliable method for product characterization.

Conclusions

Combining the capabilities of a chromatographic database with principal component analysis gives the user the capability
of evaluating trends and groupings in a set of chromatograms without resorting to tedious side-by-side comparisons.  In addition, the overlap density heatmap is a means for rapidly identifying portions of the chromatograms that either differentiate or are common to a collection of samples.  The speed with which a large database can be mined for relevant information is also greatly accelerated by this process.