GB/T 13747.25-2017 《Methods for chemical analysis of zirconium and zirconium alloys—Part 25：Determination of niobium content—2-(5-bromo-2-pyridylazo)-5-diethylam inophenol spectrophotometry and inductively coupled plasma atomic emission spectrometry》 Related products

GB/T 13747.25-2017 "Methods for chemical analysis of zirconium and zirconium alloys, Part 25: Determination of niobium content 5-Br-PADAP Spectrophotometric method, spectra-trophotometry and Inductance coupled plasma atomic emission spectroscopy (AES) method" stipulates two methods for the determination of niobium content in zirconium and zirconium alloys, with a determination range of 0.20% to 3.00% and 0.050% to 3.00%, respectively. The standard details the 5-Br-PADAP Spectrophotometric method, spectra-trophotometry as an arbitration method, and Inductance coupled plasma atomic emission spectroscopy (AES) method (ICP-AES) as an operation step of the conventional analytical method, providing standardized technical guidance for the determination of niobium content in zirconium and zirconium alloys.