S. Shrivastav et al., ESTIMATION OF TRACE QUANTITIES OF CHROMIUM USING COPRECIPITATION PROPERTIES OF LANTHANUM HYDROXIDE, Indian journal of chemistry. Sect. A: Inorganic, physical, theoretical & analytical, 33(12), 1994, pp. 1124-1125
Coprecipitation properties of lanthanum hydroxide precipitate has been
used for preconcentration of water samples, containing trace quantiti
es (mu g dm(-3)) of Cr-VI/Cr-III. The precipitate is able to carry, qu
antitatively both forms of Cr at [La-III] > 100 mg dm(-3) at pH > 7 an
d can be effectively used for trace analysis of Cr.