Applied Study of Near-infrared Spectroscopy Analytical Technique on Chemical Analysis of Tobacco

Correlation models of near infrared(NIR) spectrum and four main chemical components total sugar,reducing sugar,nicotine,total nitrogen of tobacco to 300 representative tabacco samples were established by using Fourier transform near infrared spectrograph.The correlation models were checked up with samples analysis,the average relative errors between NIR predicting data and actual measured results of different components were under 5%.The results suggested that NIR spectroscopy analytical technique can be applied preliminarily on quick and quantitive analysis of reqular chemical components of tobacco.