Application of Flame Atom Trapping and Column Preconcentration Techniques to the Measurement of Cadmium in Urine
Measurement of cadmium in urine at concentrations around 1 μg 1-1 is not easy. Atomic absorption using electrothermal atomisation (ETA-AAS) affords the necessary sensitivity but can be subject to interferences and if not set up properly can give erroneous results (Feitsma et al 1984). Flame AAS (FAAS) is generally simpler to carry out and is less susceptible to the effects of urine composition. However, sensitivity is not as good as can be achieved by ETA-AAS.
KeywordsFlow Injection Analysis Basic Alumina Electrothermal Atomisation Urine Composition Volume Flame
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