Standard No.:	GB 223.42-1985
English Name:	Methods for chemical analysis of iron,steel and alloy; The anion-exchange separation-bromopyrogallol red photometric method for the determination of tantalum content
Chinese Name:	钢铁及合金化学分析方法 离子交换分离-溴邻苯三酚红光度法测定钽量
Chinese Classification:	H11    Steel and iron alloy analysis method
Professional Classification:	GB    National Standard
Source Content Issued by:	China Steel Industry Association
Issued on:	1985-07-18
Implemented on:	1986-6-1
Status:	valid
Superseding:	YB 3514-1978
Target Language:	English
File Format:	PDF
Word Count:	1500 words
Translation Price(USD):	45.0
Delivery:	via email in 1~3 business day

在酸性溶液中有表面活性剂溴化十六烷基三甲胺存在下，钽与溴邻苯三酚红形成蓝紫色络合物，铁、钛、钼、铝、锆、铋、铌等有干扰，用离子交换分离法将它们与钽分离。铋用EDTA掩蔽。在50ml体积中含钼2～40μg时,浓度与吸光度成比例关系。