2018CJ/T 51-2018 Standard test method for urban sewage water quality
2004CJ/T 51-2004 Methods for the examination of municipal sewage
1999CJ/T 65-1999 Municipal sewage.Determination of copper、zinc、lead、cadmium、manganese、nickeland iron.Atomic absorption spectrometry
CJ/T 65-1999 Municipal sewage.Determination of copper、zinc、lead、cadmium、manganese、nickeland iron.Atomic absorption spectrometry was changed to CJ/T 51-2004 Methods for the examination of municipal sewage.