PRACTICAL APPLICATIONS OF ELEMENT-SPECIFIC DETECTION BY INDUCTIVELY-COUPLED PLASMA-ATOMIC EMISSION-SPECTROSCOPY AND INDUCTIVELY-COUPLED PLASMA-MASS SPECTROMETRY TO TON CHROMATOGRAPHY OF FOODS

Three practical examples are presented to demonstrate the utility of e lement-selective detection for ion chromatography (IC). The determinat ion of As species in a liquid health food supplement by IC with induct ively coupled plasma atomic emission spectroscopy (IC-ICP-AES) is show n to confirm results obtained for total As. IC-ICP-AES is also used to investigate the identity of an unknown peak in a sample of shrimp com mercially treated with tripolyphosphate. Finally, results are presente d for the determination of residual bromate in baked goods by IC with inductively coupled plasma mass spectrometry detection.