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1.湖南财经工业职业技术学院 汽车工程学院,湖南 衡阳 421000
2.暨南大学 物理与光电工程学院, 广东 广州 510000
3.北京理工大学 重庆微电子研究院,重庆 400000
潘 涛,博士,教授,研究方向:光谱技术、光谱分析与化学计量学,E-mail:466945939@qq.com
收稿日期:2025-02-13,
修回日期:2025-03-20,
录用日期:2025-04-02,
网络出版日期:2025-05-21,
纸质出版日期:2025-06-15
移动端阅览
谭辉,潘涛.Vis-NIR光谱无约束MW-PLS方法及其在血清胆红素分析的应用[J].分析测试学报,2025,44(06):1-7.
TAN Hui,PAN Tao.Unconstrained MW-PLS Method for Vis-NIR Spectroscopy and Its Application in Serum Bilirubin Analysis[J].Journal of Instrumental Analysis,2025,44(06):1-7.
谭辉,潘涛.Vis-NIR光谱无约束MW-PLS方法及其在血清胆红素分析的应用[J].分析测试学报,2025,44(06):1-7. DOI: 10.12452/j.fxcsxb.25021385.
TAN Hui,PAN Tao.Unconstrained MW-PLS Method for Vis-NIR Spectroscopy and Its Application in Serum Bilirubin Analysis[J].Journal of Instrumental Analysis,2025,44(06):1-7. DOI: 10.12452/j.fxcsxb.25021385.
移动窗口-偏最小二乘(MW-PLS)采用有约束的双参数(起点波长、波长数)搜索,遍历所有子波段,是光谱分析的有效波段筛选方法。该文将MW-PLS扩展为无约束参数搜索,记为无约束MW-PLS(UMW-PLS),其兼顾前向和后向优化,可优选双波段组合。分别采用MW-PLS和UMW-PLS方法,建立了血清胆红素指标间接胆红素(IBil)、直接胆红素(DBil)和总胆红素(TBil)的可见-近红外(Vis-NIR)光谱模型。对于每个指标,最优2nd UMW-PLS和3rd UMW-PLS模型分别优选到双波段和三波段组合,严格优于最优MW-PLS模型,波长复杂性依次下降。经外部检验,三指标的最优3rd UMW-PLS模型的偏差性能比(RPD)分别为3.0、3.2和5.8,表明Vis-NIR光谱可用于胆红素指标IBil、DBil和TBil的无试剂同时定量分析。提出的UMW-PLS是一种简洁有效的多波段优选策略。
Moving window-partial least squares(MW-PLS),using a constrained two-parameter search(initial wavelength,number of wavelengths) to traverse all sub-wavebands,is an effective waveband screening method of spectral analysis. In this study,MW-PLS was extended to unconstrained parametric search,denoted as unconstrained MW-PLS(UMW-PLS),which contained forward and backward optimizations,and could select dual-waveband combinations. The visible-near infrared (Vis-NIR) spectral analysis models of serum bilirubin indicators—indirect bilirubin (IBil),direct bilirubin(DBil) and total bilirubin(TBil) were established by MW-PLS and UMW-PLS methods,respectively. For each indicator,the selected optimal 2nd UMW-PLS and 3rd UMW-PLS models,correspondind separately the dual-waveband and three-waveband combinations,were strictly better than the optimal MW-PLS models,and the wavelength complexity decreased sequentially. In external validation,the ratio of performance-to-deviation(RPD) of the optimal 3rd UMW-PLS models of the three indicators reached 3.0,3.2 and 5.8,respectively. The results indicated that Vis-NIR spectroscopy can be used for the reagent-free simultaneous quantitative analysis of bilirubin indicators IBil,DBil and TBil. The proposed UMW-PLS was a concise and effective multi-waveband optimization strategy.
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