Home / Standards / GB/T 31705-2015 GB/T 31705-2015 Active In situ mesaurement of background atmospheric carbon dioxide and methane concentration by gas chromatographic(GC) system 气相色谱法本底大气二氧化碳和甲烷浓度在线观测方法 Standard Type GBT ICS 07.060 CCS A47 Status 现行 Issue Date 2015-06-02 Implementation 2016-01-01 Responsible Dept 中国气象局 Drafting Unit N/A