文章基本信息

标题：飲料水中の亜鉛のジンコンによる比色定量法について
本地全文：下载
作者：早川亮太
期刊名称：Journal of Health Science
印刷版ISSN：1344-9702
电子版ISSN：1347-5207
出版年度：1960
卷号：8
期号：2
页码：14-18
DOI：10.1248/jhs1956.8.2_14
出版社：The Pharmaceutical Society of Japan
摘要：The methods which have been used for the determination of zinc in water are not adequate in the sensibility and procedure. It was found that the application of zincon (2-carboxy-2'-hydroxy-5-sulfoformazyl-benzene) introduced by Yoe and Rush is most suitable for the determination of zinc in water. Copper also forms a blue complex with zincon. Good result was obtained by the addition of 1 g of thiourea for masking 100 μg of copper presented with 10μg of zinc. In the presence of much iron (III), aluminium, copper and mercury (II), it is necessary to extract zinc from a weakly ammonical solution with dithizon-CCl₄ solution, and to shake the extract with dilute HCl (0.02 N) to bring zinc into the aqueous phase.