Home / Standards / GB/T 11221-1989 GB/T 11221-1989 Abolished Radiochemical analysis of caesium-137 in ash of biological samples 生物样品灰中铯-137的放射化学分析方法 Standard Type GBT ICS 13.020 CCS Z33 Status 废止 Issue Date 1989-03-31 Implementation 1990-01-01 Responsible Dept 生态环境部 Drafting Unit N/A