HEART-CUT COLUMN-SWITCHING TECHNIQUES FOR THE DETERMINATION OF AN ALIPHATIC AMINE IN AN ORGANIC MATRIX AND FOR LOW-LEVELS OF SULFATE IN AN ANION MATRIX

A ''dilute-and-shoot'' approach to ion chromatographic analysis employing ''heart-cut'' column switching techniques has been demonstrated to be a powerful tool to solve a variety of analytical problems. This paper describes various refinements of this technology for a cationic ''slice'' method for the determination of an aliphatic amine in an organic matrix and an unprecedented example of low level anion analysis in an anion matrix: sulfate analysis in sodium phosphate.