Home / Standards / GB/T 11224-1989 GB/T 11224-1989 Active Analytical method of thorium in water 水中钍的分析方法 Standard Type GBT ICS N/A CCS Z33 Status 现行 Issue Date 1989-03-31 Implementation 1990-01-01 Responsible Dept 生态环境部 Drafting Unit 生态环境部