GBT-223.21-1994-钢铁及合金化学分析方法-5-CI-PADAB分光光度法测定钴量

UDC669.14/.15:543H11中华人民共和国国家标准GB/T223.20223.22-94钢铁及合金化学分析方法电位滴定法测定钴量5-CI-PADAB分光光度法测定钴量TRU亚硝基R盐分光光度法测定钴量Methods for chemical analysis of iron,steel and alloyThe potentiometric titration method for//www.the determination of cobalt content00-616The 5-Cl-PADAB spectrophotometric methodfor the determination of cobalt contentThe nitroso-R-salt spectrophotometric methodfor the determination of cobalt content1994-01-17发布1994-10-01实施国家技术监督局发布