Home / Standards / GB/T 13747.8-1992 GB/T 13747.8-1992 Abolished Zirconium and zirconium alloys--Determination of cobalt content--1-Nitroso-2-hydroxy-3，6-naphthalene-disulfonic acid (sodium salt) spectrophotometric method 锆及锆合金化学分析方法 亚硝基R盐分光光度法测定钴量 Standard Type GBT ICS 77.120.70 CCS H14 Status 废止 Issue Date 1992-11-05 Implementation 1993-06-01 Responsible Dept 中国有色金属工业协会 Drafting Unit N/A