GB/T 6150.15-2023 in English

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Methods for chemical analysis of tungsten concentrates―Part 15:Determination of bismuth content―Hydride generation atomic fluorescence spectrometry and flame atomic absorption spectrometry

Issued on:2023-08-06
Implemented on:2024-03-01
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Standard No:	GB/T 6150.15-2023
Document status:	VALID
Title in English:	Methods for chemical analysis of tungsten concentrates―Part 15:Determination of bismuth content―Hydride generation atomic fluorescence spectrometry and flame atomic absorption spectrometry
Title in Chinese:	钨精矿化学分析方法第15部分：铋含量的测定氢化物发生原子荧光光谱法和火焰原子吸收光谱法
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 1~3 business days
Issued on:	2023-08-06
Implemented on:	2024-03-01
Superseding:	GB/T 6150.15-2008 Methods for chemical analysis of tungsten concentrates - Determination of bismuth content - Flame atomic absorption spectrometric method
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
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《GB/T 6150.15-2023钨精矿化学分析方法第15部分：铋含量的测定氢化物发生原子荧光光谱法和火焰原子吸收光谱法》由TC243（全国有色金属标准化技术委员会）归口，TC243SC3（全国有色金属标准化技术委员会稀有金属分会）执行，主管部门为中国有色金属工业协会。

Introduction

GB/T 6150.15—2023 Standard Overview

GB/T 6150.15—2023 "Chemical Analysis Methods for Tungsten Concentrates Part 15: Determination of Bismuth Content by Hydride Generation Atomic Fluorescence Spectrometry and Flame Atomic Absorption Spectrometry" is a national standard of the People's Republic of China, which is used to regulate the determination of bismuth content in tungsten concentrates. This standard replaces the previous GB/T6150.15—2008 version, introduces more advanced detection technology, and optimizes the measurement range and accuracy.

Standard Development Background

Tungsten concentrate, as an important strategic resource, is widely used in many industrial fields. The GB/T6150 series of standards aims to provide a scientific and unified method for the chemical composition analysis of tungsten concentrates. With the advancement of industry technology and changes in market demand, the determination methods in the original standards need to keep pace with the times.

Main Technical Changes

Project	2008 Edition	2023 Edition
Measurement Range	0.050%~0.50%	0.0010%~0.30%
Detection Method	Flame Atomic Absorption Spectrometry	Hydride Generation Atomic Fluorescence Spectrometry and Flame Atomic Absorption Spectrometry
Applicability	Medium to High Content Determination	Low to Trace Detection

Comparison of Two Determination Methods

Hydride Generation Atomic Fluorescence Spectrometry (Method 1):

Principle: Potassium borohydride is used to reduce bismuth to generate hydride, and the fluorescence intensity is measured using an atomic fluorescence spectrometer.
Advantages: Atomic fluorescence spectrometer has high sensitivity and a low detection limit (up to 0.1 ng/mL).

Flame Atomic Absorption Spectrometry (Method 2):

Principle: The absorbance of bismuth is measured in an air-acetylene flame, and the content is calculated using the standard curve method.
Advantages: Atomic absorption spectrometer is easy to operate and suitable for a wide concentration range.

Implementation Suggestions

When applying this standard, enterprises should choose the appropriate method according to actual needs. For trace detection, hydride generation atomic fluorescence spectrometry is recommended; for medium and high content detection, flame atomic absorption spectrometry is more efficient. At the same time, it is recommended to calibrate the instrument regularly to ensure the accuracy of the measurement.

More samples: JGJ 94-2008 GB 50021-2001(2009) QC/T 942-2021

Sample only — not a preview of GB/T 6150.15-2023

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