Ion-chromatographic determination of fluoride and chloride ions in high-purity water

摘要

New procedures were suggested for preparing alkaline eluants with low concentrations of anionic impurities for the ion-chromatographic determination of weakly retained anions present in trace amounts in high-purity water. These procedures are based on on-line purification of the eluant by ion exchange in a chromatographic system and on ammonia dialysis through gas-permeable membraned into a flow of deionized water.