近红外漫透反射光谱技术在烟用料液品质控制中的应用
Application of near-infrared diffuse-transflective spectroscopy technology in quality control of tobacco casings
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摘要:
为实现采用近红外光谱技术结合多元统计分析方法评价烟用料液配制质量的稳定性，基于烟用料液的近红外漫透反射光谱数据，采用主成分分析-马氏距离（PCA-MD）法对6种不同品牌料液分类建模，并以马氏距离为评价指标建立不同批次间料液质量稳定性的多元统计过程监测模型。结果表明：①该分类模型能够很好地识别不同品牌的烟用料液。②当马氏距离阈值设置为该类平均马氏距离的+3σ范围时，能有效监控同一品牌不同批次料液的配制质量。该方法可较好地实现烟用料液配制质量的快速检测与评价。 Abstract:The stability of the preparation quality of tobacco casings was evaluated by near-infrared spectroscopy combined with multivariate statistical analysis. Based on the near-infrared diffuse-transflective spectral data of tobacco casings, the classification models of six brands of casings were established by principal component analysis-Mahalanobis distance （PCA-MD） method, and the multivariate statistical process monitoring models of quality stability for casings of different batches were established by using Mahalanobis distance as evaluation index. The results showed that: 1） The classification models could identify different brands of tobacco casings. 2） Setting the Mahalanobis distance threshold as average Mahalanobis distance +3σ could effectively monitor the preparation quality for tobacco casings from batches of the same brand. This method could effectively realize the rapid detection and evaluation of the preparation quality of tobacco casings.
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