1971 Volume 44 Issue 3 Pages 693-696
A new method is developed for the rapid extraction and direct photometric determination of antimony. With 20% TBP-toluene 3 to 15 μg of antimony is extracted from 2M hydrochloric acid containing 1 M magnesium chloride. From the organic phase, antimony is directly determined photometrically at 640 nm as its complex with brilliant green. Antimony can be selectively extracted in the presence of a large number of cations and anions. The total operation requires only 20 min.
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