Determination of high concentration nicotinic amide by near infrared spectrocopy
文献类型: 外文期刊
第一作者: Feng, H
作者: Feng, H;Xu, ZD;Wu, HX;Jiang, Y
作者机构:
关键词: nicotinic amide;partial least squares regression;near infrared spectroscopy
期刊名称:CHINESE JOURNAL OF ANALYTICAL CHEMISTRY ( 影响因子:1.134; 五年影响因子:0.909 )
ISSN: 0253-3820
年卷期: 2001 年 29 卷 12 期
页码:
收录情况: SCI
摘要: In the range of 9001 similar to 8060 cm(-1) and 7443 similar to 7144 cm(-1) first-order derivative near infrared spectra were used for quick determination of high concentration nicotinic amide. Vector normalization data pretreatment and partial least squares regression method were used to resolve the overlapping spectra of nicotinic amide as well as the alcohol solvent. 54 samples were taken as the calibration set getting a correlation coefficient of 0.997 at factor number of 4. The linear range is from 0.13 mol/L to 0.70 mol/L nicotinic amide. The relative deviations for the prediction results were < 2. 3% ( n = 9). The method gives satisfactory results for the sample analysis. Some factors influencing the precision of regression analysis were also discussed.
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