The separation of tellurium(IV) from water and sea water by flotation with hydrated iron(III) oxide
作者： Susumu Nakashima , Masakazu Yagi
DOI: 10.1016/S0003-2670(00)83621-1
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摘要: Abstract A flotation separation is described for sub-microgram levels of tellurium(IV) from 1-1 samples water and sea water. Tellurium(IV) coprecipitated with hydrated iron(III) oxide at pH 8–9. The precipitate floated the aid surfactant solutions small nitrogen bubbles, separated dissolved in dilute hydrochloric acid. Tellurium then converted to hydrogen telluride sodium tetrahydroborate measured by atomic absorption spectrometry. Recovery added tellurium (0.4 0.8 μg l −1 ) was about 83%. time required preconcentration 30 rain per sample, including 15 stirring.
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