Gravimetric determination of iodine as tetraphenylarsonium tri-iodide.
Tetraphenylarsonium tri-iodide has been prepared and its properties studied. On the basis of its stability and very low solubility a gravimetric method for the determination of mg amounts of iodine has been developed. The mean relative error for amounts of 1-6 mg is about +0.3%. CO(3)(2-). wSO(4)(2-). NO(3)(-) Cl(-)and Br(-) do not interfere.
Gantchev
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N
Department of Analytical Chemistry, Institute of Chemical Technology and Metallurgy, Sofia, Bulgaria.
Kireva
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A