Home / Standards / GB/T 34766-2017 GB/T 34766-2017 Active Determination of total humic acid content from mineral source 矿物源总腐殖酸含量的测定 Standard Type GBT ICS 65.080 CCS G20 Status 现行 Issue Date 2017-11-01 Implementation 2018-05-01 Responsible Dept 中国石油和化学工业联合会 Drafting Unit N/A