GB/T 16477.1-2024 in English

VALID

Chemical analysis methods of silicon-based rare earth ferroalloy and RE-Mg ferro-silicon alloy—Part 1: Determination of total rare earth and fifteen rare earth elements contents

Issued on:2024-04-25
Implemented on:2024-04-25
File Format:PDF
Delivery:Within 1 day

Price(USD)： $344.00
$334.00

Standard No:	GB/T 16477.1-2024
Document status:	VALID
Title in English:	Chemical analysis methods of silicon-based rare earth ferroalloy and RE-Mg ferro-silicon alloy—Part 1: Determination of total rare earth and fifteen rare earth elements contents
Title in Chinese:	稀土硅铁合金及镁硅铁合金化学分析方法第1部分：稀土总量、十五个稀土元素含量的测定
Language:	English
File Format:	Electronic (PDF)
Delivery:	Within 1 day
Issued on:	2024-04-25
Implemented on:	2024-04-25
Superseding:	GB/T 16477.1-2010 Chemical analysis methods of rare earth ferrosilicon alloy and rare earth ferrosilicon magnesium alloy—Part 1:Determination of total rare earth content
Professional Classification:	GB-National Standard
Related Keywords:	total rare earth rare earth elements silicon-based rare earth ferroalloy fifteen rare earth elements contents introduction core changes total analysis improved method sensitivity
Related Topics:	Total rare earth Silicon analysis Analysis method of iron element Analysis method of iron element Total rare earth Silicon analysis Determination method of iron element Rare Earth Standard Rare Earth Meter cesium rare earth The total amount of rare earth in iron and steel Silica method rare earth cluster Element content in steel and alloy Determination method of silicon element Elemental Analysis + Silicon Determination method of silicon element Alloy element content analysis How to analyze the element content in the alloy Chemical analysis of silicon element Detection of silicon content Chemical analysis of silicon element Analysis of element content in alloy Determination method of silicon element Alloy element content analysis method Elemental Analysis of Silicon Elemental silicon determination method Iron content method rare earth capacity method Elemental Analysis Silicon Rare Earth 08 Rare Earth Alloys and Rare Earths How to Test for Rare Earths Rare earth element icp Five element analysis Five element analysis rare earth element icp analysis icp rare earth element rare earth element atom The content of the five elements of iron and steel Silicon analysis method Rare Earth Analyzer Hot pressed rare earth Silicon content detection Rare Earth Capital Iron method Silicon content detection Elemental Analysis Silicon Total Rare Earth Waste Analysis of silicon element Five Elements Analysis Rare earth element content analysis Method for Determination of Alloying Element Content Determination method of alloying element content Silicon analysis Elemental Analysis Determination of Silicon secreted rare earth Element content ratio of silicon to titanium 3 Foreign rare earth analysis methods Magnesium Rare Earth Master Alloy Rare earth manganese magnesium ferrosilicon alloy Neodymium content in rare earth Rare earth mining Determination method of silicon element Molecular weight of an element Rare earth alloy series Rare earth element icp Rare Earth Probe GB/T 16477.1 GB/T 16477.1-1996 GB/T 16477.1-2010 elements in iron alloys About rare earth iron and steel magnesium Primary Trace Rare Earth Analysis Application of Spectral Analysis Technology in Detection of Rare Earth Elements Rare earth element purification methods The total amount of rare earth elements on the method of dividing strata National testing methods for silicon content Detection method of rare earth elements in soil Standardized values for rare earth elements Rare earth content detection method Rare earth element standardization Rare earth alloy execution Rare earth titration analysis method Determination of Rare Earth International Rare earth ferrosilicon alloy fire protection Rare earth nickel-based alloy Rare earth element detection Determination method of total rare earth content in tea Analysis of total iron content in complex components Rare earth extraction rate analysis method Trace Rare Earth Analysis Soil total iron content classification rare earth execution Seawater Trace Rare Earth Testing Qualitative analysis method of diatomite and clay

《GB/T 16477.1-2024稀土硅铁合金及镁硅铁合金化学分析方法第1部分：稀土总量、十五个稀土元素含量的测定》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

Core changes in the standard revision

Revision items	2010 edition	2024 edition	Technical significance
Measurement range of method 1	0.50%-6.00%	0.50%-10.00%	Expand the detection capability of high-content samples
Measurement range of method 2	2.00%-42.00%	10.00%-40.00%	Optimize the detection interval accuracy
New content	Not specified	15 kinds of rare earth elements are determined separately	Meet the detection needs of lanthanum-based alloys

Method comparison and technology selection

Parameters	Inductively coupled plasma method	EDTA titration method
Detected elements	15 kinds of rare earth elements + total amount	Total amount of rare earth elements + element distribution calculation
Applicable content	0.03%-10.00%	0.05%-40.00%
Precision (total RE)	0.02%-0.12%	0.10%-0.30%
Equipment requirements	ICP-OES spectrometer	Conventional titration device

Key operating points

Sample pretreatment specifications

Decomposition process:Nitric acid-hydrofluoric acid gradient digestion → hydrofluoric acid precipitation separation → perchloric acid fume treatment → ammonia precipitation purification. Special attention should be paid to the use of polytetrafluoroethylene beaker and ventilation protection.

Standard solution configuration

Eight matrix-matched standard storage solutions (I-VIII) are used, among which:

Solutions I-III correspond to lanthanum, cerium and yttrium main alloys respectively
Solutions IV-VIII are mixed matrix standards
The correlation coefficient of the standard curve of each element must be ≥0.999

Implementation suggestions

Laboratory configuration plan

Detection requirements	Recommended methods	Key equipment
Multi-element simultaneous analysis	Method 1	ICP-OES(must comply with JJG768)
High content total determination	Method 2	Precision pH meter (±0.02)
Arbitration detection	Dual method verification	Dual-channel plasma spectrometer

Quality assurance measures

A blank test shall be carried out simultaneously for each batch of samples
Verification shall be carried out using standard substances (such as GBW(E)080125)
The absolute difference under repeatability conditions shall be ≤r value

Technology evolution analysis

This revision reflects three major technological advances:

Expansion of detection dimension: Upgrade from total determination to 15 element components + total analysis
Improved method sensitivity: ICP-OES detection limit reaches 0.03μg/mL
Enhanced matrix adaptability: New lanthanum-based alloy detection scheme, covering more than 90% of industrial samples

The standard precision data comes from collaborative tests of 8 laboratories and is verified using the GB/T6379.2 statistical method.

More samples: JGJ 94-2008 GB 18306-2015 DL/T 368-2010

Sample only — not a preview of GB/T 16477.1-2024

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