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GB/T 6150.19-2025 English PDF

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GB/T 6150.19-2025: Methods for chemical analysis of tungsten concentrates - Part 19: Determination of fluoride content - Ion selective electrode method
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GB/T 6150.19: Evolution and historical versions

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GB/T 6150.19-2025English279 Add to Cart 3 days [Need to translate] Methods for chemical analysis of tungsten concentrates - Part 19: Determination of fluoride content - Ion selective electrode method Valid GB/T 6150.19-2025
GB/T 6150.19-1985English199 Add to Cart 2 days [Need to translate] Methods for chemical analysis of tungsten concentrates--The 2- (5-bromo-pyridylazo)-5-diethylaminophenol photometric method for the determination of antimony content Obsolete GB/T 6150.19-1985

PDF similar to GB/T 6150.19-2025


Standard similar to GB/T 6150.19-2025

GB/T 6150.1   GB/T 4698.21   GB/T 4698.3   GB/T 6150.20   GB/T 6150.12   GB/T 6150.15   

Basic data

Standard ID GB/T 6150.19-2025 (GB/T6150.19-2025)
Description (Translated English) Methods for chemical analysis of tungsten concentrates - Part 19: Determination of fluoride content - Ion selective electrode method
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard H14
Classification of International Standard 77.120.99
Word Count Estimation 14,121
Date of Issue 2025-01-24
Date of Implementation 2025-08-01
Issuing agency(ies) State Administration for Market Regulation, China National Standardization Administration

GB/T 6150.19-2025: Methods for chemical analysis of tungsten concentrates - Part 19: Determination of fluoride content - Ion selective electrode method


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Methods for chemical analysis of tungsten concentrates - Part 19.Determination of fluoride content - Ion selective electrode method Chemical analysis method of tungsten concentrate Part 19.Determination of fluorine content Ion Selective Electrode Method Methods for chemical analysis of tungsten concentrates 1 Part 19.Determination of fluoride content 1 Ion selective electrode method ICS 77.120.99 CCS H 14 National Standard of the People's Republic of China Released on 2025-01-24 2025-08-01 Implementation State Administration for Market Regulation The National Standardization Administration issued

Table of Contents

Preface ... Ⅲ Introduction Ⅳ 1 Scope ... 1 2 Normative references ... 1 3 Terms and Definitions ... 1 4 Principle ... 1 5 Reagents or materials ... 1 6 Instruments and Equipment ... 2 7 samples ... 2 8 Test steps ... 2 8.1 Test Materials 2 8.2 Parallel tests 2 8.3 Blank test 2 8.4 Determination 2 8.5 Drawing of working curve ... 3 9 Experimental data processing ... 3 10 Precision ... 3 10.1 Repeatability ... 3 10.2 Reproducibility 4 11 Test Report ... 4 Appendix A (Informative) Raw data of precision test ... 5

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents" Drafting is required. This document is part 19 of GB/T 6150 Chemical analysis methods for tungsten concentrates. GB/T 6150 has published the following parts. Part 1.Determination of tungsten trioxide content - Gravimetric method on ignition of ammonium tungstate; Part 2.Determination of tin content - Potassium iodate titration and inductively coupled plasma atomic emission spectrometry; Part 3.Determination of phosphorus content - Phosphomolybdenum yellow spectrophotometric method and inductively coupled plasma atomic emission spectrometric method; Part 4.Determination of sulfur content - High frequency induction infrared absorption method and combustion-iodine titration method; Determination of calcium content EDTA volumetric method and flame atomic absorption spectrometry (GB/T 6150.5); - Part 6.Gravimetric method for determination of moisture content; Determination of tantalum and niobium content - Plasma emission spectrometry and spectrophotometry (GB/T 6150.7); - Part 8.Determination of molybdenum content - Thiocyanate spectrophotometric method; - Determination of copper content-Flame atomic absorption spectrometry (GB/T 6150.9); Part 10.Determination of lead content by hydride generation atomic fluorescence spectrometry and flame atomic absorption spectrometry; Determination of zinc content-Flame atomic absorption spectrometry (GB/T 6150.11); Part 12.Determination of silicon dioxide content - Silica molybdenum blue spectrophotometric method and gravimetric method; Part 13.Determination of arsenic content by atomic fluorescence spectrometry and DDTC﹘Ag spectrophotometry; Determination of manganese content-Ammonium ferrous sulfate volumetric method and flame atomic absorption spectrometry (GB/T 6150.14); Part 15.Determination of bismuth content - Hydride generation atomic fluorescence spectrometry and flame atomic absorption spectrometry; Determination of iron content-Sulfosalicylic acid spectrophotometric method (GB/T 6150.16); Part 17.Determination of antimony content - Atomic fluorescence spectrometry; Part 18.Determination of barium content - Inductively coupled plasma atomic emission spectrometry; Part 19.Determination of fluoride content - Ion selective electrode method; - Part 20.Determination of mercury content - Direct determination by solid injection. - Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents. This document was proposed by China Nonferrous Metals Industry Association. This document is under the jurisdiction of the National Technical Committee on Standardization of Nonferrous Metals (SAC/TC 243). This document was drafted by. Jiangxi Tungsten and Rare Earth Product Quality Supervision and Inspection Center (Jiangxi Tungsten and Rare Earth Research Institute), Ganzhou Metallurgical Research Institute Testing Technology Service Co., Ltd., Guangdong Academy of Sciences Industrial Analysis and Testing Center, Zijin Mining Group Co., Ltd., Luoyang Luanchuan Molybdenum Co., Ltd. Group Co., Ltd., Hunan Shizhuyuan Nonferrous Metals Co., Ltd. Chenzhou Tungsten Products Branch, Jiangxi Tungsten Shitaike Tungsten Products Co., Ltd., Shenzhen Zhongjin Lingnan Nonferrous Metals Co., Ltd. Danxia Smelter, Tongling Nonferrous Metals Group Co., Ltd., Ganzhou Haisheng Tungsten Co., Ltd. LIMITED. The main drafters of this document are. Li Ping, Li Jianguo, Ling Honghuan, Gu Juan, Lai Wang, Xiong Dinggan, Li Zhanpeng, Jiang Jiajie, Luo Ronggen, Zhang Shuniang, Yao Jianfei, Duan Yanan, Hou Guiqiong, Tang Xianying, Wu Riliang, Yu Chunrong, Xie Aicheng, Huang Qing, Cheng Xiaoying, Pan Ying, Zhong Derong and Zhou Hongshui.

Introduction

Tungsten concentrate is an important strategic resource. Tungsten and tungsten alloys produced with it as an important industrial raw material have high melting point and high specific gravity. With the characteristics of heavy weight and high hardness, it is widely used in mechanical processing, metallurgy, mining, electronic telecommunications, construction industry, weapons industry, aerospace, etc. GB/T 6150 aims to establish a complete, feasible and applicable set of tungsten concentrate product production and trade requirements through experimental research. Chemical composition analysis method standards. Due to the length of the document, usage requirements, scope of application, and technical independence between various analytical methods, For various reasons, GB/T 6150 is planned to consist of 20 parts. Part 1.Determination of tungsten trioxide content. The purpose is to establish a method for determining the tungsten trioxide content in tungsten concentrate by gravimetric method. Part 2.Determination of tin content. The purpose is to establish a titration method and inductively coupled plasma atomic emission spectrometry to determine the content of tungsten Method for determining the tin content in ores. Part 3.Determination of phosphorus content. The purpose is to establish a spectrophotometric method and an inductively coupled plasma atomic emission spectrometric method for the determination of phosphorus content. Method for determining phosphorus content in tungsten concentrate. Part 4.Determination of sulfur content. The purpose is to establish a high frequency infrared absorption method and iodine titration method for determining sulfur content in tungsten concentrate. method. Part 5.Determination of calcium content. The purpose is to establish a method for determining the calcium content in tungsten concentrate by volumetric method and atomic absorption spectrometry. Part 6.Determination of wet water content. The purpose is to establish a gravimetric method for determining the wet water content in tungsten concentrate. Part 7.Determination of tantalum and niobium content. The purpose is to establish an inductively coupled plasma emission spectrometry and spectrophotometry method for the determination of tungsten Method for determining the content of tantalum and niobium in ores. Part 8.Determination of molybdenum content. The purpose is to establish a method for the spectrophotometric determination of molybdenum content in tungsten concentrate. Part 9.Determination of copper content. The purpose is to establish a method for determining the copper content in tungsten concentrate by flame atomic absorption spectrometry. Part 10.Determination of lead content. The purpose is to establish atomic fluorescence spectrometry and flame atomic absorption spectrometry for the determination of lead in tungsten concentrate. Lead content method. Part 11.Determination of zinc content. The purpose is to establish a method for determining the zinc content in tungsten concentrate by flame atomic absorption spectrometry. Part 12.Determination of silicon dioxide content. The purpose is to establish a spectrophotometric and gravimetric method for the determination of silicon dioxide content in tungsten concentrate. Quantitative method. Part 13.Determination of arsenic content. The purpose is to establish the determination of arsenic content in tungsten concentrate by atomic fluorescence spectrometry and spectrophotometry. method. Part 14.Determination of manganese content. The purpose is to establish the determination of manganese content in tungsten concentrate by volumetric method and flame atomic absorption spectrometry. method. Part 15.Determination of bismuth content. The purpose is to establish atomic fluorescence spectrometry and flame atomic absorption spectrometry for the determination of bismuth in tungsten concentrate. Bismuth content method. Part 16.Determination of iron content. The purpose is to establish a spectrophotometric method for the determination of iron content in tungsten concentrate. Part 17.Determination of antimony content. The purpose is to establish a method for determining the antimony content in tungsten concentrate by atomic fluorescence spectrometry. Part 18.Determination of barium content. The purpose is to establish an inductively coupled plasma atomic emission spectrometry method for the determination of barium content in tungsten concentrate. Quantitative method. Part 19.Determination of fluorine content. The purpose is to establish a method for determining the fluorine content in tungsten concentrate using an ion selective electrode. Part 20.Determination of mercury content. The purpose is to establish a method for determining the mercury content in tungsten concentrate by direct determination of solid sampling. The waste residue produced by tungsten concentrate production is listed as hazardous waste by the Ministry of Environmental Protection, among which fluorine is an indicator element for hazardous waste identification. For the surrounding environment of waste slag, the harm of fluorine to groundwater and plants will eventually transfer to the harm to human body. The level of fluorine content in the waste slag directly determines the level of fluorine content in the waste slag. The formulation of this document can meet the market demand for tungsten concentrate quality inspection. The establishment of standard methods is conducive to the use of unified analytical methods to carry out product quality testing, which is conducive to the fair trading environment in the market. form. Chemical analysis method of tungsten concentrate Part 19.Determination of fluorine content Ion Selective Electrode Method

1 Scope

This document describes the method for the determination of fluorine content in tungsten concentrates. This document is applicable to the determination of fluorine content in tungsten concentrate. Determination range. 0.020% to 2.00%.

2 Normative references

The contents of the following documents constitute the essential clauses of this document through normative references in this document. For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies. in this document. GB/T 6682 Specifications and test methods for water used in analytical laboratories GB/T 8170 Rules for rounding off values and expression and determination of limit values

3 Terms and definitions

There are no terms or definitions that require definition in this document.

4 Principle

The sample was melted and decomposed with sodium hydroxide, the melt was leached with water and filtered, and then the mixture was stirred in a sodium citrate-triethanolamine medium at pH 6.5 to pH 7.0. In the process, saturated calomel electrode is used as reference electrode, fluoride ion selective electrode is used as indicator electrode, and fluoride content is determined by potentiometer.

5 Reagents or materials

Unless otherwise stated, only reagents of confirmed analytical grade were used in the analyses. 5.1 Water, GB/T 6682, Grade 2. 5.2 Sodium hydroxide. 5.3 Nitric acid (1 4). 5.4 Sodium citrate solution (294 g/L). 5.5 Triethanolamine solution. Add 64 mL of hydrochloric acid to 100 mL of triethanolamine and adjust the pH to 1.1 using hydrochloric acid (1.1) and ammonia (1.1). 6.5～pH 7.0, dilute to 500 mL with water and mix well. 5.6 Fluorine standard stock solution. Weigh 1.1055 g of sodium fluoride dried at 120 °C for 2 h, dissolve it in water, and transfer it to a 500 mL volumetric flask. Dilute to volume with water, mix well, and store in a polyethylene bottle. 1 mL of this solution contains 1 000 μg of fluorine. You can also purchase certified standard fluorine from the market. substance. 5.7 Fluorine standard solution A. Pipette 10.00 mL of fluorine standard stock solution (5.6) into a 100 mL plastic volumetric flask and dilute with water to 1 mL of this solution contains 100 μg of fluorine. 5.8 Fluorine standard solution B. Pipette 10.00 mL of fluorine standard solution A (5.7) into a 100 mL plastic volumetric flask and dilute with water to

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