S. Kagaya et J. Ueda, PRECONCENTRATION OF INDIUM(III) BY COPRECIPITATION WITH GALLIUM PHOSPHATE FOR ELECTROTHERMAL ATOMIZATION ATOMIC-ABSORPTION SPECTROMETRY, Bulletin of the Chemical Society of Japan, 67(7), 1994, pp. 1965-1967
Gallium phosphate coprecipitates quantitatively 0.5-7.5 mug of indium(
III) from 100-500 cm3 of water at pH 2.5-6.0 and from the same volume
of sea water at pH 3.5-6.0. The detection limit (signal/noise = 2) is
0.3 ng cm-3 of indium(III) i 500 cm3 of the initial sample solution.