DETERMINATION OF METHANOL AND METHYL TERT-BUTYL ETHER IN GASOLINE BY INFRARED-SPECTROSCOPY USING THE CIRCLE(R) CELL AND MULTIVARIATE CALIBRATION

被引：14
|
作者：
GARCIA, FX
DELIMA, L
MEDINA, JC
机构：
[1] Intevep, S.A., Analysis and Evaluation Department, Caracas-1070A
来源：
APPLIED SPECTROSCOPY | 1993年 / 47卷 / 07期
关键词：
OXYGENATED DETERMINATION; MIDINFRARED; MULTIVARIATE ANALYSIS; PLS;
D O I：
10.1366/0003702934415381
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
The feasibility of predicting concentrations of methanol and methyl tert-butyl ether (MTBE) in gasolines from the mid-infrared absorption spectra was investigated. The C-O bond stretching band region was related to these oxygenated compounds' levels with the aid of multivariate statistics. The sample spectra were taken with the use of a circular internal reflectance (CIRCLE(R)) cell. With the use of partial least-squares (PLS) regression a model with 18 samples was built and used to predict a set of 10 gasolines with good agreement. Two additional samples prepared with other brands of gasoline were analyzed with the same model and no matrix effects were found.
引用
收藏
页码：1036 / 1039
页数：4
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