The effects of number of principal component, range of wavelength, differentiation and smoothing of rawspectra on model were investigated.
研究主成分数、建模谱区、求导和平滑预处理技术对定量分析模型的影响。
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For all samples, the rawspectra were pretreated as second derivative and Norris derivative filter(7,5). partial least square (PLS) was used as the calibration algorithm.
Spectra of 700 typical samples were collected to develop the calibration models, among which the rawspectra were pretreated with first derivative and partial least square.