GB/T 26416.1-2022
Methods for Chemical Analysis of Rare Earth Ferroalloys Part 1: Determination of Total Rare Earth (English Version)

Standard No.: GB/T 26416.1-2022
Language: Chinese, Available in English version
Release Date: 2022
Published By: General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Latest: GB/T 26416.1-2022
Replace: GB/T 26416.1-2010

Scope: This document specifies the methods for the determination of the total amount of rare earths in rare earth ferroalloys, including three methods: oxalate gravimetric method (method 1), EDTA titration method (method 2), and inductively coupled plasma emission spectrometry (method 3). This document is applicable to the determination of the total amount of rare earths in rare earth iron alloys. Method 1 and method 2 are applicable to the determination of the total amount of rare earths in rare earth iron alloys. The measurement range (mass fraction): 10.00%~90.00%; Determination of the main rare earth elements in iron alloys and lanthanum-cerium-iron alloys, the measurement range (mass fraction): 1.00%~20.00%. Method 1 is used as the referee method for the overlapping part of the determination range.

GB/T 26416.1-2022 Referenced Document

GB/T 6682 Water for analytical laboratory use.Specification and test methods
GB/T 8170 Rules of rounding off for numerical values & expression and judgement of limiting values

2022 GB/T 26416.1-2022 Methods for Chemical Analysis of Rare Earth Ferroalloys Part 1: Determination of Total Rare Earth
2011 GB/T 26416.1-2010 Chemical analysis methods of dysprosium ferroalloy.Part 1:Determination of total rare earth contents.Gravimetry