The spectrophotometric determination of bismuth after extraction of protriptylinium tetraiodobismuthate(III)

Bismuth (0–300 μg) can be determined spectrophotometrically at 482 nm after its extraction as protriptylinium tetraiodobismuthate(III) into chloroform. The effects of reagent conditions and diverse ions are reported. The system has been applied to the determination of bismuth in pharmaceutical samples.