title: [Study on spectra pretreatment in near infrared spectroscopy analysis using charger coupled device detector].
abstract: The effects of spectra pretreatment method and parameters to signal noise ratio and calibration models quality in near-infrared spectroscopy analysis using charger coupled device(CCD) detector have been studied and discussed. To attain higher signal noise ratio, in the range of 700-1,100 nm, using 2048 pixels CCD, we suggest that the optimal gaps of smoothing first derivative treatment of spectra are 9 points, and the gap of second derivative treatment is 19 points.
authors.affiliation: Research Institute of Petroleum Processing, 100083 Beijing.
authors.forename: G
authors.initials: G
authors.lastname: Xu
authors.forename: H
authors.initials: H
authors.lastname: Yuan
authors.forename: W
authors.initials: W
authors.lastname: Lu