GB/T 13747.4-2020 Methods for chemical analysis of zirconium and zirconium alloys-Part 4:Determination of chromium content—Diphenylcarbazide spectrophotometry and inductively coupled plasma atomic emission spectrometry (English Version)
This part of GB/T13747 specifies the determination method for chromium content in zirconium and zirconium alloys. This section applies to the determination of chromium content in zirconium sponge, zirconium and zirconium alloys. Measuring range: 0.0020%~0.20%. The second method is arbitration
GB/T 13747.4-2020 history
2020GB/T 13747.4-2020 Methods for chemical analysis of zirconium and zirconium alloys-Part 4:Determination of chromium content—Diphenylcarbazide spectrophotometry and inductively coupled plasma atomic emission spectrometry
1992GB/T 13747.4-1992 Zirconium and zirconium alloys--Determination of chromium content-Diphenylcarbazide spectrophotometric method