Determination of light elements in organic liquid matrixes by principal component regression in EDXRS using backscattered radiation.

In: X-Ray Spectrometry (X-Ray Spectrom.), Jg. 28 (1999) ; Nr. 1, S. 59-63
ISSN: 0049-8246
Zeitschriftenaufsatz / Fach: Chemie
The detn. of C, H and O in org. liq. matrixes such as solvents and different base oils by principal component regression in EDXRS is demonstrated. This method is based on a significant contribution of the light elements to the backscattering of x-rays in the sample. As excitation source a Y secondary target in a Cartesian geometry is used. The prediction error of the PCR calibration with respect to unknown samples is in the region of 4.0 mg g-1 for H, 30.0 mg g-1 for C and 26.0 mg g-1 for O.