[Influence of FT-NIR spectrometer scanning requirements on the math model's precision].
This study is based on the agriculture product near infrared spectra database, which is a foundation database. The database has very important effects on agriculture products quality analysis and agriculture breeding. What the NIR researchers and NIR users care about is how to utilize information of the foundation database fully. To share the NIR resource, unifying the scanning term to get high quality spectra is the first step. This article uses wheat powder as sample to study the influence of different resolution, different He-Ne frequency and sample granularity on the wheat powder protein model. The results show that scanning sample by 4, 8 or 16 cm(-1) resolution has little influence on the wheat powder protein math model. The change in He-Ne frequency has influence to wavenumber accuracy, but when the change is within 1 cm(-1), the influence is indistinctive. For FT-NIR instruments with He-Ne to have better stability, we needn't often adjust the He-Ne wavenumber. Sample granularity has more distinctive influence on the NIR math models.
Zhao
Li-li
LL
Information College of China Agriculture University, Beijing 100094, China.
Zhao
Long-lian
LL
Li
Jun-hui
JH
Zhang
Lu-da
LD
Yan
Yan-lu
YL
D002626:Chemistry, Pharmaceutical; D020650:Combinatorial Chemistry Techniques; D003198:Computer Simulation; D006371:Helium / Q000737:chemistry; D008027:Light; D008422:Materials Testing; D008433:Mathematics; D009356:Neon / Q000737:chemistry; D011208:Powders / Q000737:chemistry; D012542:Scattering, Radiation; D013055:Spectrophotometry, Infrared / Q000379:methods; D017550:Spectroscopy, Fourier Transform Infrared / Q000379:methods*; D019265:Spectroscopy, Near-Infrared / Q000379:methods*; D013678:Technology, Pharmaceutical / Q000379:methods; D013696:Temperature
D011208:Powders; D006371:Helium; D009356:Neon