Home / Standards / GB/T 17672-2025 GB/T 17672-2025 Active Determinations for isotopes of lead,strontium and neodymium in rock samples 岩石中铅、锶、钕同位素测量方法 Standard Type GBT ICS 27.120.30 CCS D45 Status 现行 Issue Date 2025-10-05 Implementation 2026-02-01 Responsible Dept 国家标准委 Drafting Unit N/A