USE OF BETA-DIKETONATE ANIONS AS ELUENT IN NON-SUPPRESSED ION CHROMATOGRAPHY - 1,3-CYCLOHEXANEDIONATE AS ACIDIC ELUENT

摘要

A new low-pK(a) beta-diketonate eluent for non-suppressed ion chromatography was developed for suppressing the dissociation of impurity anions without impairing the separation and determination of fluoride and chloride anions. It was found that 1,3-cyclohexanedionate is the preferred eluent, having a low pK(a) originating from the structural strain of the beta-diketonate group. [References: 11]