Elimination of Matrix Interferences in Ion Chromatographic Analysis of Difficult Aqueous Samples
- 1 August 1989
- journal article
- research article
- Published by Oxford University Press (OUP) in Journal of Chromatographic Science
- Vol. 27 (8) , 449-455
- https://doi.org/10.1093/chromsci/27.8.449
Abstract
Several different methods of eliminating matrix-related chromatographic interferences are compared. Modification of the borate-gluconate eluent composition improves the appearance of chromatograms of anions from either acidic or alkaline sample matrices. The pH range of possible samples can be further extended by the employment of procedures utilizing ion-exchange resins or ion-exchange membranes. Membrane-based ion exchangers are found to give better recoveries for analyte anions after sample pretreatment than ion-exchange resins. It is also found that samples pretreated on ion-exchange membranes contain less ionic contamination than those treated with ion-exchange resins.This publication has 0 references indexed in Scilit: