Chemometric methods for extracting information from temperature-dependent near-infrared spectra

• 来源期刊: 中国科学:化学（英文版）
• 年，卷（期）: 2019,（5）
• 页码范围: 583-591
• 页数: 9页
• 语种: 英文

摘要

Temperature-dependent near-infrared (NIR) spectroscopy is a new technique for measuring the NIR spectra of a sample at different temperatures.Taking the advantage of the temperature effect,the technique has shown its potential in both quantitative and qualitative analysis.The technique has been proved to be powerful in determination of the analytes in complex samples,particularly in studying the functions of water in aqueous systems due to the significant effect of temperature on the NIR spectra of water.Because of the complicated interactions in the samples and the overlapping of the broad peaks in NIR spectra,it is difficult to extract the temperature-dependent information from the spectra.Chemometric methods,therefore,have been developed for improving the spectral resolution and extracting the temperature-induced spectral information.In this review,recent advances in the studies of chemometric methods and the applications in resolution,quantitative and structural analysis of temperature-dependent NIR spectra were summarized.