New Technology for Sample Preprocessing in NIR Analysis
QIN Xi-yun1, LI Jun-hui2*, YANG Yu-hong1, CHANG Zhi-qiang2
1. Yunnan Tobacco Science Research Institute, Yuxi 653100, China 2.College of Information and Electrical Engineering, China Agricultural University, Beijing 100094, China
Abstract:Sample’s moisture content and granularity would have an important influence on NIR veracity. Preprocesssing methods have been used for NIR analysis to achieve better NIR veracity. With Yunnan flue-cured tobacco as study materials, the authors innovatively applied microwave fast drying technology and home pulverizer to tobacco preprocessing, which could finish the preprocessing in 5 min,faster than the traditional methods such as oven drying and sifting. Results showed that: microwave fast drying technology could improve NIR analysis veracity when samples’ moisture content had a wide range; influence of samples’ granularity on NIR veracity could be eliminated after 25 s home pulverizer shatter. This study can offer a new method for NIR analysis workers to simplify NIR preprocessing.
秦西云1,李军会2*,杨宇虹1,常志强2. 近红外分析的样品前处理新技术研究[J]. 光谱学与光谱分析, 2007, 27(10): 2010-2012.
QIN Xi-yun1, LI Jun-hui2*, YANG Yu-hong1, CHANG Zhi-qiang2. New Technology for Sample Preprocessing in NIR Analysis. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2007, 27(10): 2010-2012.
[1] WANG Jing-yu,et al(王京宇, 等). Cereal and Food Industry(粮食与饲料工业),2001,(10):48. [2] Delwiche S R, Pitt R E, Norris K H. Cereal Chem., 1992, 69(1): 107. [3] Gaines C C, Windham W W. Cereal Chem., 1998, 75(3):386. [4] YU Hai-yan, et al(于海燕, 等). Transactions of the Chinese Society of Agricultural Engineering(CSAE)(农业工程学报),2005, 21(11): 160. [5] Long T M. Anal. Proc., 1983,20: 69. [6] DUAN Yan-qing, et al(段焰青, 等). Tobacco Science & Technology/Tobacco Chemistry(烟草科技/烟草化学), 2005, (7): 22. [7] DUAN Yan-qing, et al(段焰青, 等). Journal of Yunnan University(云南大学学报), 2005, 27(5): 424. [8] ZHAO Li-li, ZHAO Long-lian, LI Jun-hui, et al(赵丽丽, 赵龙莲, 李军会, 等). Spectroscopy and Spectral Analysis(光谱学与光谱分析), 2004, 24(1): 41. [9] LI Yong, WEI Yi-min, ZHANG Bo, et al(李 勇, 魏益民, 张 波, 等). Spectroscopy and Spectral Analysis(光谱学与光谱分析), 2005, 25(12): 1963. [10] Swierenga H, De Weijer A P. J. Chemometrics., 1999, 13: 237. [11] CHU Xiao-li, YUAN Hong-fu, WANG Yan-bin, et al(褚小立, 袁洪福, 王艳斌, 等). Spectroscopy and Spectral Analysis(光谱学与光谱分析), 2004, 24(6): 666. [12] CHU Xiao-li, YUAN Hong-fu, LU Wan-zhen(褚小立, 袁洪福, 陆婉珍). Spectroscopy and Spectral Analysis(光谱学与光谱分析), 2001, 21(6): 881.