5Weycr L G. Near-infrared spectroscopy of organic substances [ J]. Appl Spectrosc Rev, 2006, 21 ( 1 ) : 1 - 43.
6Katsumoto Y, Adachi D, Sato H,et al. Usefulness of a curve fitting method in the analysis of overlapping overtones and com- binations of CH stretching modes [ J ]. J Near Infrared Spec- trosc ,2002,10( 1 ) :85 - 91.
7Phelan M K, Barlow C H, Callis J B. Measurement of caustic and causitie brine solutions by spectroscopic detection of the hydroxide ion in the near-infrared region, 700-1150 nm [J]. Anal Chem, 1989,61:1419 - 1424.
