Abstract
1-Nitroso-2-naphthol, an organic precipitating agent, can be used as a volumetric reagent for the titration of micro amounts of divalent metals in a N,N- diraethylforraamide solution. Spectrophotometric titrations of 0.01 mu mole of copper(II) and 10.0 mu moles of Ni(II) in 40 nfl of solvent can be perforraed with a precision of 2 parts per 1000. Pb(II), Zn(II), and uranyl ions also chelate with nitrosonaphthol in dimethylfornnannide. The usefulness of nitrosonaphthol as a titrant in dimethylfornnannide is limited somewhat by its gradual decomposition in this solvent. (auth)
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