[Influence of sample annum and distribution of chemical values on NIR veracity].
The influence of sample annum and the distribution of sample component on NIR veracity was studied with homemade grating diffuse NIR instrument using Yunnan flue-cured tobacco. Results showed that sample annum had an obvious influence on the total sugar and nicotine models, but had an unconspicuous influence on the total-nitrogen model. Models set up by samples, whose component content distribution was normal school, was better than those set up by even distribution. The conclusion in this study has a significant referenced value for the method and principle to select representative samples to modeling from a large amount of specimens.
College of Information and Electrical Engineering, China Agricultural University, Beijing 100094, China. caunir@cau.edu.cn
Jun-Hui
JH
Li
Xi-Yun
XY
Qin
Wen-Juan
WJ
Zhang
Gui-Min
GM
Cai
Yu-Hong
YH
Yang
Long-Lian
LL
Zhao
Zhi-Qiang
ZQ
Chang
Li-Li
LL
Zhao
Lu-Da
LD
Zhang
D002241:Carbohydrates / Q000032:analysis; D002681:China; D009538:Nicotine / Q000032:analysis*; D010936:Plant Extracts / Q000032:analysis*; D011786:Quality Control; D019265:Spectroscopy, Near-Infrared / Q000379:methods*; D013997:Time Factors; D014026:Nicotiana / Q000737:chemistry*
D002241:Carbohydrates; D010936:Plant Extracts; D009538:Nicotine