微量の水銀のジチゾン抽出定量
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概要
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Dithizonate extraction method seems to have many merits than other methods, for the quantitative determination of small amount of mercury. However, for the perfect dithizonate extraction, all mercury must have the form of mercuric salt. The author studied to know the conditions of the oxidation of mercury, and found that, on the quantitative determination of mercury in the field of electrolytic caustic soda industry by the mercury cell process, the samples to be analyzed could be oxidized enough by an addition of HCl-KClO<SUB>3</SUB>.<BR>The oxidized solution was adjusted to pH 4.65.2, and EDTA solution and hydroxylamine hydrochloride were added to reduce the excess of the chlorine delivered from HCl-KClO<SUB>3</SUB>. Then (mercuric) mercury in the solution could be extracted by dithizone-carbon tetrachloride.
- 社団法人 日本分析化学会の論文