Home / Standards / GB/T 11894-1989 GB/T 11894-1989 Abolished Water quality--Determination of total nitrogen--Alkaline potassium persulfate digestion-UV spectro photo metric method 水质 总氮的测定 碱性过硫酸钾消解紫外分光光度法 Standard Type GBT ICS N/A CCS Z16 Status 废止 Issue Date 1989-11-03 Implementation 1990-07-01 Responsible Dept 生态环境部 Drafting Unit N/A