XB/T 622.1-2017 The Chemical Analysis of Rare Earth-based Hydrogen Storage Materials - Part 1: Determination of Total Rare Earth Content - Oxalate Weight Method

XB/T 622.2-2017 Chemical analysis of rare earth-based hydrogen storage alloys - Part 2: Determination of nickel, lanthanum, cerium, praseodymium, neodymium, samarium, yttrium, cobalt, manganese, aluminum, iron, magnesium, zinc, copper and their respective proportions XB/T 622.3-2017 Rare earth hydrogen storage alloy chemical analysis method - Part 3: Determination of iron, magnesium, zinc, and copper content - Inductively coupled plasma atomic emission spectroscopy (ICP-AES) XB/T 622.4-2017 XB/T 622.4-2017 Chemical analysis method of rare earth-based hydrogen storage alloys Part 4: Determination of silicon content - Solvothermal method with molybdenum blue spectrophotometry XB/T 622.5-2017 The Chemical Analysis Methods for Rare Earth-based Hydrogen Storage Alloys - Part 5: Determination of Carbon Content - High-Frequency Flame Infrared Absorption Method XB/T 622.6-2017 Rare earth hydrogen storage alloys chemical analysis method - Part 6: Determination of oxygen content - Pulse-heated infrared absorption method XB/T 622.7-2017 The Chemical Analysis Method of Rare Earth-based Hydrogen Storage Alloys - Part 7: Determination of Lead and Cadmium Content (XB/T 622.7-2017)