GB/T 26416.2-2022 in English

VALID

Chemical analysis method for rare earth ferroalloy—Part 2: Determination of rare earth impurity contents—Inductively coupled plasma emission spectrometry

Issued on:2022-12-30
Implemented on:2023-07-01
File Format:PDF
Delivery:Via email within 1~3 business days

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Standard No:	GB/T 26416.2-2022
Document status:	VALID
Title in English:	Chemical analysis method for rare earth ferroalloy—Part 2: Determination of rare earth impurity contents—Inductively coupled plasma emission spectrometry
Title in Chinese:	稀土铁合金化学分析方法第2部分：稀土杂质含量的测定电感耦合等离子体发射光谱法
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 1~3 business days
Issued on:	2022-12-30
Implemented on:	2023-07-01
Superseding:	GB/T 26416.2-2010 Chemical analysis methods of dysprosium ferroalloy—Part 2:Determination of rare earth impurity contents—Inductively coupled plasma atomic emission spectrometry
ICS Classification:	77.120.99-Other non-ferrous metals and their alloys
Chinese Classification:	H14-Rare metals and their alloys analysis method
Professional Classification:	GB-National Standard
Related Keywords:	rare earth impurity rare earth impurity contents rare earth impurity content % rare earth impurity content rare earth
Related Topics:	rare earth inductive coupling inductively coupled plasma optical emission spectrometry inductive coupling Rare Earth Standard Rare Earth Standard Rare Earth Spectral Analysis Coupled inductor Inductive coupling+ Rare Earth Spectral Items Inductive coupling standard plasma emission plasma emission spectrometry Spectrum plasma Rare earth+ South rare earth Rare Earth Alloys and Rare Earths Rare earth impurities Coupled inductor Inductively Coupled Plasma Emission Ferroalloy Analysis Rare Earth Analyzer Ionization Methods for Mass Spectrometry Rare earth impurities secreted rare earth Foreign rare earth analysis methods Separation method of rare earth rare earth quality inductively coupled plasma optical emission spectrometry Mass Spectrometry Rare Earth GB/T 26416.2 GB/T 26416.2-2010 Dysprosium iron alloy Holmium Iron Alloy Yttrium iron alloy Ferroalloy Chemical Analysis Methods Primary Trace Rare Earth Analysis Rare earth content detection method Trace Rare Earth Analysis Rare earth ferrocerium alloy

《GB/T 26416.2-2022稀土铁合金化学分析方法第2部分：稀土杂质含量的测定电感耦合等离子体发射光谱法》由TC229（全国稀土标准化技术委员会）归口，主管部门为国家标准委。

Introduction

Chemical analysis methods for rare earth ferroalloys Part 2: Determination of rare earth impurity content

1. Standard background and technological evolution

This standard GB/T26416.2-2022 "Chemical analysis methods for rare earth ferroalloys Part 2: Determination of rare earth impurity content - Inductively coupled plasma emission spectrometry" was officially implemented on July 1, 2023, replacing the original GB/T26416.2-2010. The new standard has made important improvements in the following aspects:

The determination range of each rare earth impurity has been changed.
The sample pretreatment process has been optimized, including the sample weighing amount and the reagent dosage.
A blank test has been added to ensure data reliability.
The wavelength of the analysis spectrum has been updated, and the types of detected elements have been expanded.

2. Comparison of standard frameworks

Standard items	Old standard (GB/T26416.2-2010)	New standard (GB/T26416.2-2022)
Measurement range	Rare earth impurity content ≤0.3%	Rare earth impurity content is extended to ≤0.3%, and the lower limit of some alloy types is reduced.
Sample weight	2.7g	Adjusted to 2.5g to reduce the amount of sample used.
Instrument requirements	ICP-OES (no clear matrix matching)	Approximate matrix matching method to improve detection sensitivity and accuracy.

3. Implementation suggestions and precautions

Implementation suggestions:

The laboratory should be equipped with ICP-OES instruments that meet the requirements and ensure that their resolution and stability meet the standard requirements.
Operators need to receive professional training and be familiar with the application of the approximate matrix matching method.
Regularly calibrate the instrument and use certified standard solutions to establish working curves.
Strictly control the purity of reagents and experimental environmental conditions (such as temperature and humidity).

Notes:

The matrix composition of different rare earth iron alloys varies significantly, and the appropriate working curve and correction method should be selected according to the specific type.
The blank test result should be ≤0.005%, otherwise the reagent purity or experimental steps need to be checked.
The selection of analytical spectral lines should avoid spectral interference, and the recommended wavelength should be preferred (see Table 4).

More samples: GB 18306-2015 JC/T 2453-2018 GB 50021-2001(2009)

Sample only — not a preview of GB/T 26416.2-2022

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