GB/T 43358-2023 in English

VALID

Rare earth mineral and rare earth products—Determination of gross alpha and beta radio activity—Thick source method

Issued on:2023-11-27
Implemented on:2024-06-01
File Format:PDF
Delivery:Within 1 day

Price(USD)： $152.00
$148.00

Standard No:	GB/T 43358-2023
Document status:	VALID
Title in English:	Rare earth mineral and rare earth products—Determination of gross alpha and beta radio activity—Thick source method
Title in Chinese:	稀土矿及稀土产品总α、总β放射性的测定厚源法
Language:	English
File Format:	Electronic (PDF)
Delivery:	Within 1 day
Issued on:	2023-11-27
Implemented on:	2024-06-01
Chinese Classification:	H14-Rare metals and their alloys analysis method
Professional Classification:	GB-National Standard
Related Keywords:	thick source method beta radio activity thick source method introduction rare earth products determination method method name scope application key parameters operation steps thick source method determination
Related Topics:	Rare Earth Standard Rare Earth Meter cesium rare earth The total amount of rare earth in iron and steel rare earth cluster rare earth capacity method Total Nitrogen Determination Dilution Rare Earth 08 Rare Earth Alloys and Rare Earths How to Test for Rare Earths Hot pressed rare earth Rare Earth Capital Total Rare Earth Waste secreted rare earth Rare earth mining Radioactive Rare Earth Waste Slag Total radioactivity measurement method Rare Earth Probe two rare earth minerals Mining of rare earth ores About rare earth rare earth ore Rare earth product varieties Rare Earth International Detection of rare earth elements in mineral products Determination of Rare Earth International total soil radioactivity Rare earth mining industry Determination method of total rare earth content in tea Total α in soil Total β Reference rare earth execution LANXESS Rare Earth Products Rare earth concentrate product quality

《GB/T 43358-2023稀土矿及稀土产品总α、总β放射性的测定厚源法》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

1. Standard background and technological evolution

With the rapid development of the rare earth industry, the problem of associated radioactivity has become increasingly prominent. The GB/T 43358-2023 standard fills the gap in the field of radioactivity detection of rare earth ores and products, using the thick source method combined with low-background α and β measuring instruments to ensure the accuracy and comparability of the test results.

2. Principle and technical requirements of the method

Method name	Scope of application	Key parameters	Operation steps
Thick source method	Determination of total α and β radioactivity in rare earth ores and products	Sample thickness is controlled at the effective saturation thickness Measurement time: 6000s Background counting rate subtraction	Sample preparation: Dry or burn to uniform powder Spread on a plate and dry Use>Low background α, β measuring instrument for measurement Data processing and calculation of radioactive concentration

3. Data processing and precision analysis

Table 1: Repeatability limit (r)

Total α radioactivity (Bq/g)	Repeatability limit (r) (Bq/g)	Total β radioactivity (Bq/g)	Repeatability limit (r) (Bq/g)
0.140	0.036	0.095	0.025
0.539	0.024	0.627	0.023

4. Implementation Suggestions

In order to ensure the accuracy and reliability of the test, it is recommended that:

The laboratory should be equipped with a qualified low background α and β measuring instrument
Operators should receive professional training
Instruments should be calibrated regularly and the precision of the methods should be verified
Quality control procedures should be established to ensure data reliability

More samples: DL/T 5154-2012 JC/T 2453-2018 DL/T 368-2010

Sample only — not a preview of GB/T 43358-2023

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