Quantification of minerals from ATR-FTIR spectra with spectral interferences using the MRC method.
A method for quantifying the individual components of mineral samples based on attenuated total reflectance - Fourier transform infrared spectroscopy (ATR-FTIR) is described, extending the constant ratio (CR) method to analytes absorbing in a common range of wavenumbers. Absorbance values in the spectral region where the analytes absorb relative to the absorbance of an internal standard absorbing at a wavenumber where the analytes do not absorb, permits the quantification of N analytes using measurements at N fixed wavenumbers. The method was tested for mixtures of albite, orthoclase, kaolin and quartz.
Departament de Química Analítica, Universitat de València, Dr. Moliner 50, 46100 Burjassot, Valencia, Spain. Electronic address: francisco.bosch@uv.es.
Francisco
F
Bosch-Reig
Departament de Química Analítica, Universitat de València, Dr. Moliner 50, 46100 Burjassot, Valencia, Spain.
José Vicente
JV
Gimeno-Adelantado
Departament de Química Analítica, Universitat de València, Dr. Moliner 50, 46100 Burjassot, Valencia, Spain.
Francisco
F
Bosch-Mossi
Departament de Química Analítica, Universitat de València, Dr. Moliner 50, 46100 Burjassot, Valencia, Spain. Electronic address: antonio.domenech@uv.es.
Antonio
A
Doménech-Carbó
ATR-FTIR; Kaolin; Potassium feldspar; Quantification; Quartz; Sodium feldspar