Simultaneous Determinations of Nb and Ta in Rocks and Minerals by Second-Derivative Spectrophotofluorimetry
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ABSTRACT
A method for the simultaneous determinations of Nb(V) and Ta(V) in rocks and minerals by sec'ond-derivative spectrophotofluorimetry is described. The method is based on the formation of fluorescent complexes of Nb(V) and Ta(V) with morin in the presence o
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