Home / Standards / GB/T 31948-2015 GB/T 31948-2015 Active Chromium ores—Determination of mercury content— Solid sampling and direct mercury analysis method 铬矿石 汞含量的测定 固体进样直接测定法 Standard Type GBT ICS 73.060.30 CCS D33 Status 现行 Issue Date 2015-09-11 Implementation 2016-06-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A