Home / Standards / GB/T 19143 GB/T 19143 Active Analytical method of element for carbon,hydrogen ,oxygen and nitrogen in rock organics 岩石有机质中碳、氢、氧、氮元素分析方法 Standard Type GBT ICS 75.010 CCS E11 Status 现行 Issue Date 2017-05-12 Implementation 2017-12-01 Responsible Dept 国家标准委 Drafting Unit 国家标准委