Study of the possibility of quantitative analysis of N,N,N′,N′-tetra-n-octyldiglycolamide by MALDI mass spectrometry

Abstract

Approaches that allow one to carry out quantitative analysis of real objects, solutions of nitric acid after contact with sorbents based on N,N,N′,N′-tetra-n-octyldiglycolamide (TODGA), by MALDI mass spectrometry are considered. The internal standard for the quantitative determination of the target component in real samples containing a high excess of inorganic salts is selected. It is found out that reproducible results can be obtained by the external standard method for a large sampling of experimental data, but the internal standard method can significantly improve the accuracy of quantitative analysis. The use of the internal standard makes it possible to eliminate an inaccuracy related to nonuniformity of sample preparation.