Abstract
A simple method is described for the simultaneous determination of free and complexed copper ions in a flow-injection system comprising ion-exchange and flame atomic absorption spectrometry. Sampling rates for 400-μl samples were 90 h −1. Typical relative standard deviations for the simultaneous determinations were 1.6% for the complexed metal (0.50 μg ml −1) and 1.0% for the free metal (0.20 μg ml −1).
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