THE ABSORPTION SPECTRUM AND DECOMPOSITION OF HYDROGEN PEROXIDE BY LIGHT
THE ABSORPTION SPECTRUM AND DECOMPOSITION OF HYDROGEN PEROXIDE BY LIGHT
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过氧化氢的光吸收光谱和分解
DOI：
10.1021/ja01380a011
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发表时间：
1929
期刊：
影响因子：
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通讯作者：
F. O. Rice
中科院分区：
文献类型：
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作者：
H. Urey;L. Dawsey;F. O. Rice
本文提出了用碘化钾和碘酸钾标准溶液容量法测定钒的方法。该方法依赖于在盐酸溶液中用已知量的碘化物还原钒酸盐，用碘酸盐滴定，使生成的碘和过量的碘化物转化为一氯化碘，结果表明，当盐酸浓度为6molal或更高时，四价钒不被一氯化碘氧化，反应是定量的。试验分析证明，在磷酸盐、砷酸盐、三价铁存在下，以及在钨酸存在下，用加入磷酸使钨酸溶解时，本法均能测定钒酸盐。
A method for the volumetric determination of vanadium by means of standard solutions of potassium iodide and potassium iodate has been developed. The method depends upon thereduction of vanadate by a known amount of iodide in hydrochloric acid solution and conversion of the iodine formed and of the excess of iodide into iodine monochloride by titration with iodate.It is shown that when the concentration of the hydrochloric acid is 6 molal or more, quadrivalent vanadium is not oxidized by theiodine mono-chloride and the reactions are quantitative. Tests analyses proved that vanadate can be determined by this method in the presence of phosphate, arsenate or ferric iron, and also in the pres-ence of tungstic acid, which may be held in solution by addingphosphoric acid.