Practical applications of element-specific detection by inductively coupled plasma atomic emission spectroscopy and inductively coupled plasma mass spectrometry to ion chromatography of foods.
Three practical examples are presented to demonstrate the utility of element-selective detection for ion chromatography (IC). The determination of As species in a liquid health food supplement by IC with inductively coupled plasma atomic emission spectroscopy (IC-ICP-AES) is shown 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 commercially treated with tripolyphosphate. Finally, results are presented for the determination of residual bromate in baked goods by IC with inductively coupled plasma mass spectrometry detection.
Heitkemper
D T
DT
National Forensic Chemistry Center, Food and Drug Administration, Cincinnati, OH 45202.
Kaine
L A
LA
Jackson
D S
DS
Wolnik
K A
KA
D000818:Animals; D001151:Arsenic / Q000032:analysis; D001939:Bread / Q000032:analysis; D001959:Bromates / Q000032:analysis; D001965:Bromides / Q000032:analysis; D001967:Bromine Radioisotopes; D002850:Chromatography, Gel; D002852:Chromatography, Ion Exchange; D033364:Decapoda / Q000737:chemistry; D005503:Food Additives / Q000032:analysis; D005504:Food Analysis / Q000295:instrumentation*; D007202:Indicators and Reagents; D013058:Mass Spectrometry; D013054:Spectrophotometry, Atomic
D001959:Bromates; D001965:Bromides; D001967:Bromine Radioisotopes; D005503:Food Additives; D007202:Indicators and Reagents; C019536:potassium bromate; D001151:Arsenic