Abstract
The optimum conditions for formation of Er-PAN and Pr-PAN complexes in micelles of TX-100 are described, and methods proposed for spectrophotometric determination of the two elements. The molar absorptivities were 5.0 × 10 41.mole −1.cm −1 for Er and 4.6 × 10 41.mole-1.cm −1 for Pr. A simple method is proposed for simultaneous determination of Er and Pr without previous separation, based on a micellar masking process.
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