Home / Standards / GB/T 18606-2025 GB/T 18606-2025 Active Determination of biomarkers in sediment and crude oil by gas chromatography-mass spectrometry 沉积物和原油中生物标志化合物气相色谱-质谱测定方法 Standard Type GBT ICS 75.010 CCS E11 Status 现行 Issue Date 2025-10-05 Implementation 2026-05-01 Responsible Dept 国家标准委 Drafting Unit N/A