Home / Standards / GB/T 7739.15-2025 GB/T 7739.15-2025 Active Methods for chemical analysis of gold concentrates—Part 15：Determination of platinum group elements contents 金精矿化学分析方法 15部分：铂族元素量的测定 Standard Type GBT ICS 73.060.99 CCS D46 Status 现行 Issue Date 2025-10-31 Implementation 2026-05-01 Responsible Dept 国家标准委 Drafting Unit N/A