Home / Standards / GB/T 14669-1993 GB/T 14669-1993 Active Air quality--Determination of ammonia--Ion selective electrode method 空气质量 氨的测定 离子选择电极法 Standard Type GBT ICS 13.040.20 CCS Z15 Status 现行 Issue Date 1993-09-18 Implementation 1994-05-01 Responsible Dept 生态环境部 Drafting Unit N/A