Home / Standards / GB/T 34500.2-2017 GB/T 34500.2-2017 Active Chemical analysis methods for rare earth residue and waste water—Part 2:Determination of chemical oxygen demand(COD) 稀土废渣、废水化学分析方法 第2部分:化学需氧量(COD)的测定 Standard Type GBT ICS 77.120.99 CCS H14 Status 现行 Issue Date 2017-10-14 Implementation 2018-05-01 Responsible Dept 国家标准委 Drafting Unit N/A