HOME   Cart(0)   Quotation   About-Us Policy PDFs Standard-List
www.ChineseStandard.net Database: 189760 (18 Oct 2025)

GB/T 6150.20-2025 English PDF

US$279.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 6150.20-2025: Methods for chemical analysis of tungsten concentrates - Part 20: Determination of mercury content - Solid sampling and direct mercury analysis method
Status: Valid
Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
GB/T 6150.20-2025English279 Add to Cart 3 days [Need to translate] Methods for chemical analysis of tungsten concentrates - Part 20: Determination of mercury content - Solid sampling and direct mercury analysis method Valid GB/T 6150.20-2025

PDF similar to GB/T 6150.20-2025


Standard similar to GB/T 6150.20-2025

GB/T 6150.1   GB/T 4698.21   GB/T 4698.3   GB/T 6150.19   GB/T 6150.15   GB/T 6150.18   

Basic data

Standard ID GB/T 6150.20-2025 (GB/T6150.20-2025)
Description (Translated English) Methods for chemical analysis of tungsten concentrates - Part 20: Determination of mercury content - Solid sampling and direct mercury analysis method
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard H14
Classification of International Standard 77.120.99
Word Count Estimation 14,139
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 6150.20-2025: Methods for chemical analysis of tungsten concentrates - Part 20: Determination of mercury content - Solid sampling and direct mercury analysis method


---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Methods for chemical analysis of tungsten concentrates - Part 20.Determination of mercury content - Solid sampling and direct mercury analysis method Chemical analysis method of tungsten concentrate Part 20.Determination of mercury content Solid sample direct determination method Methods for chemical analysis of tungsten concentrates- Part 20.Determination of mercury content- Solid sampling and direct mercury analysis 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 Determination 2 8.4 Drawing of working curve ... 2 9 Experimental data processing ... 3 10 Precision ... 3 10.1 Repeatability ... 3 10.2 Reproducibility 3 11 Test Report ... 3 Appendix A (Informative) Recommended Instrument Parameters for Solid Mercury Analyzer ... 5 Appendix B (Informative) Raw data of precision test ... 6

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 20 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), China Nonferrous Metals Guilin Lin Mineral Geology Research Institute Co., Ltd., Shenzhen Zhongjin Lingnan Nonferrous Metals Co., Ltd. Shaoguan Smelter, Xi'an Han Tang Analysis and Testing Co., Ltd. Co., Ltd., National Standard (Beijing) Inspection and Certification Co., Ltd., Ningbo Customs Technical Center, and Jiangxi University of Science and Technology. The main drafters of this document are. Xu Na, Ling Honghuan, Li Jianguo, Zeng Qingping, Chen Zhubing, Gu Juanping, Zuo Hongyi, Shi Shilong, Li Shengli, Zhang Xiaoyan, Wang Li, Yue Wenying, Fu Ranran, Zhang Jianbo, Yang Kai, Wang Xianfan.

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 the determination of lead content in tungsten concentrate by atomic fluorescence spectrometry and flame atomic absorption spectrometry. 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. Mercury is a toxic and harmful element. During the mining, smelting, processing and utilization of tungsten concentrate, the mercury in it will migrate and concentrate. The preparation of this document is of great significance to the national strategy of protecting the ecological environment. The new standard method can not only meet the market demand for tungsten concentrate quality inspection, but also help everyone adopt a unified analysis method. The law allows product quality testing to be carried out in accordance with the law, which is conducive to the formation of a fair trading environment in the market. Chemical analysis method of tungsten concentrate Part 20.Determination of mercury content Solid sample direct determination method

1 Scope

This document describes the method for the determination of mercury content in tungsten concentrates. This document is applicable to the determination of mercury content in tungsten concentrate. Determination range. 0.010 µg/g～15.0 µg/g.

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

In an oxygen atmosphere, the sample is dried and thermally decomposed in a decomposition furnace. Mercury is atomized and the mercury vapor is carried into the single wavelength by the oxygen flow. The optical absorption cell measures the absorbance (peak height or peak area) of mercury at a wavelength of 253.7 nm and the amount of mercury is calculated using the standard curve method.

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 Nitric acid (ρ=1.42 g/mL), extra-pure. 5.3 Potassium dichromate solution (10 g/L). weigh 1 g of high-purity potassium dichromate and dissolve it in 100 mL of water. 5.4 Mercury standard stock solution. Weigh 1.354 g of mercuric dichloride that has been dried for 24 h with phosphorus pentoxide, dissolve in a small amount of water, and add Transfer 50 mL of nitric acid (5.2) and 10 mL of potassium dichromate solution (5.3) to a 1 000 mL volumetric flask, dilute to the mark with water, and mix well. This solution contains 1 000 μg of mercury per 1 mL. Certified standard substances can also be purchased from the market. 5.5 Mercury standard solution A. Pipette 2.00 mL of mercury standard stock solution (5.4) into a 100 mL volumetric flask and add 5 mL of nitric acid. (5.2), 1 mL of potassium dichromate solution (5.3), dilute to volume with water, and mix well. 1 mL of this solution contains 20 μg of mercury. 5.6 Mercury standard solution B. Pipette 10.0 mL of mercury standard solution A (5.5) into a 100 mL volumetric flask, add 5 mL of nitric acid (5.2), 1 mL of potassium dichromate solution (5.3) is diluted to volume with water and mixed. 1 mL of this solution contains 2 μg of mercury. 5.7 Oxygen (volume fraction not less than 99.99%). 5.8 Sample boat (nickel boat or magnetic boat).

Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 6150.20-2025_English be delivered?

Answer: Upon your order, we will start to translate GB/T 6150.20-2025_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 6150.20-2025_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 6150.20-2025_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to [email protected]. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.