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GB/T 20899.5-2021: Methods for chemical analysis of gold ores - Part 5: Determination of lead content
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Methods for chemical analysis of gold ores - Part 5: Determination of lead content
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GB/T 20899.5-2021
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| GB/T 20899.5-2007 | English | 319 |
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Methods for chemical analysis of gold ores -- Part 5: Determination of lead contents
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Basic data | Standard ID | GB/T 20899.5-2021 (GB/T20899.5-2021) | | Description (Translated English) | Methods for chemical analysis of gold ores - Part 5: Determination of lead content | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | D46 | | Word Count Estimation | 14,153 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 20899.5-2021: Methods for chemical analysis of gold ores - Part 5: Determination of lead content
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Methods for chemical analysis of gold ores - Part 5.Determination of lead content
ICS 73.060.99
CCSD46
National Standards of People's Republic of China
Replace GB/T 20899.5-2007
Chemical analysis methods of gold ore
Part 5.Determination of the amount of lead
Released on 2021-08-20
2022-03-01 implementation
State Administration of Market Supervision and Administration
Issued by the National Standardization Management Committee
Table of contents
Foreword Ⅲ
Introduction Ⅳ
1 Scope 1
2 Normative references 1
3 Terms and definitions 1
4 Method 1.Flame atomic absorption spectrometry 1
4.1 Principle 1
4.2 Reagents or materials 1
4.3 Equipment 2
4.4 Sample 2
4.5 Test Step 2
4.6 Test data processing 3
4.7 Precision 3
4.8 Test report 4
5 Method 2.Ethylenediaminetetraacetic acid disodium titration method 4
5.1 Principle 4
5.2 Reagents or materials 4
5.3 Instruments and equipment 5
5.4 Sample 6
5.5 Test Step 6
5.6 Test data processing 7
5.7 Precision 7
5.8 Test report 7
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 of Standardization Documents"
Drafting.
This document is part 5 of GB/T 20899 "Methods for Chemical Analysis of Gold Ore". GB/T 20899 has published the following 14
part.
---Part 1.Determination of the amount of gold;
---Part 2.Determination of silver content by flame atomic absorption spectrometry;
---Part 3.Determination of arsenic content;
---Part 4.Determination of copper content;
---Part 5.Determination of lead content;
---Part 6.Determination of the amount of zinc;
---Part 7.Determination of iron content;
---Part 8.Determination of sulfur content;
---Part 9.Determination of carbon content;
---Part 10.Determination of the amount of antimony;
---Part 11.Determination of the amount of arsenic and bismuth;
---Part 12.Determination of arsenic, mercury, cadmium, lead and bismuth content by atomic fluorescence spectrometry;
---Part 13.Determination of lead, zinc, bismuth, cadmium, chromium, arsenic and mercury content inductively coupled plasma atomic emission spectrometry;
---Part 14.Determination of the amount of thallium inductively coupled plasma atomic emission spectrometry and inductively coupled plasma mass spectrometry.
This document replaces GB/T 20899.5-2007 "Methods for Chemical Analysis of Gold Ore Part 5.Determination of Lead Content", and
Compared with GB/T 20899.5-2007, in addition to structural adjustments and editorial changes, the main technical changes are as follows.
a) In Method 1, the measurement range is adjusted from "0.50%~5.00%" to "0.10%~5.00%" (see Chapter 1, Chapter 2 of the.2007 edition)
chapter);
b) Deleted the "allowable difference" requirement (see.2007 version of 2.7, 3.6);
c) Added "repeatability" and "reproducibility" requirements (see 4.7, 5.7);
d) In Method 2, the sample digestion and interference elimination methods are changed (see 5.5.3,.2007 version 3.4.3);
e) In Method 2, the correction of the lead content in the filtrate has been added (see 5.5.3.6).
Please note that some of the contents of this document may involve patents. The issuing agency of this document is not responsible for identifying patents.
This document was proposed and managed by the National Gold Standardization Technical Committee (SAC/TC379).
Drafting organizations of this document. Changchun Gold Research Institute Co., Ltd., Beikuang Testing Technology Co., Ltd., Shenzhen Gold, Gold and Silver Jewelry Inspection and Research Institute
Research Center Co., Ltd., Shandong Gold Smelting Co., Ltd., Daye Nonferrous Design and Research Institute Co., Ltd., SDIC Jincheng Metallurgical Co., Ltd.,
Zijin Mining Group Co., Ltd., Soochow Gold Group Co., Ltd., Henan Yuguang Gold and Lead Co., Ltd., Henan Zhongyuan Gold Smelting
Factory Co., Ltd., Yunnan Gold Mining Group Precious Metal Testing Co., Ltd., Shandong Zhaojin Group Co., Ltd.
The main drafters of this document. Chen Yonghong, Zhao Yaming, Lu Xingen, Meng Xianwei, Zhao Kedi, Zhang Yue, Li Yanji, Yan Peng, Sun Jixian, Han Xiao,
Hao Lu, Han Congmei, Yang Pei, Wang Deyu, Zhou Fajun, Feng Yuan, Wei Wen, Cui Yajun, Fan Jingke, Zhou Huayu, Lin Yunfeng, Bao Xiaoling, Yang Ying, Zhao Min,
Xie Fei, Tian Jing, Lu Wenxian, Chen Xiaoke, Luan Zuochun, Gong Zaiyang.
The previous versions of this document and the documents replaced are as follows.
---GB/T 20899.5-2007;
---This is the first revision.
Introduction
GB/T 20899 "Gold Ore Chemical Analysis Method" aims to help gold industrial and mining enterprises accurately understand the valuable elements and impurity content of gold ore.
It is beneficial to optimize the control parameters of the dressing and smelting process, accurately control the consumption of reagents, reduce the interference of impurity elements on the smelting and purification process, and improve the
The comprehensive recovery rate of price elements can contribute to the efficient recycling of resources of the entire gold industry, sustainable green and healthy development, and the construction of smart mines.
Provide technical support. GB/T 20899 is proposed to be composed of 15 parts.
---Part 1.Determination of the amount of gold and silver. The purpose is to specify the fire test weight method and fire test for the determination of the amount of gold and silver in gold ore.
Gold enrichment-flame atomic absorption spectrometry, activated carbon enrichment-flame atomic absorption spectrometry, activated carbon enrichment-iodometric method and various methods
Applicable measurement range.
---Part 2.Determination of the amount of silver flame atomic absorption spectrometry. The purpose is to specify the flame atom for the determination of silver content in gold ore
Absorption spectroscopy and applicable measurement range.
---Part 3.Determination of arsenic content. The purpose is to specify the silver diethyldithiocarbamate spectrophotometry for the determination of arsenic in gold ore
Degree method and potassium dichromate titration method and the applicable measurement range of each method.
---Part 4.Determination of copper content. The purpose is to specify flame atomic absorption spectrometry and thiosulfuric acid for the determination of copper in gold ore
Sodium titration method and the applicable measurement range of each method.
---Part 5.Determination of lead content. The purpose is to specify the flame atomic absorption spectrometry and ethylenediamine tetrachloride for the determination of lead in gold ore.
The disodium acetate titration method and the applicable measurement range of each method.
---Part 6.Determination of the amount of zinc. The purpose is to specify the flame atomic absorption spectrometry for the determination of zinc in gold ore and the applicable measurement
Set range.
---Part 7.Determination of iron content. The purpose is to specify the potassium dichromate titration method for the determination of iron in gold ore and the applicable determination
Scope.
---Part 8.Determination of sulfur content. The purpose is to specify the barium sulfate gravimetric method and the combustion-acid-base titration method for the determination of sulfur content in gold ore
And the applicable measurement range of each method.
---Part 9.Determination of carbon content. The purpose is to specify the ethanol-ethanolamine-potassium hydroxide titration method for the determination of carbon in gold ore and
Applicable measurement range.
---Part 10.Determination of the amount of antimony. The purpose is to specify the cerium sulfate titration method and the hydride generation method for the determination of antimony in gold ore.
Sub-fluorescence spectroscopy and the applicable measurement range of each method.
---Part 11.Determination of the amount of arsenic and bismuth. The purpose is to specify the hydride generation for the determination of the amount of arsenic and bismuth in gold ore-atom
Fluorescence spectroscopy and applicable measurement range.
---Part 12.Determination of arsenic, mercury, cadmium, lead and bismuth content by atomic fluorescence spectrometry. The purpose is to regulate arsenic, mercury, cadmium,
Hydride generation-atomic fluorescence spectrometry for the determination of lead and bismuth content and the applicable measurement range.
--- Part 13.Determination of lead, zinc, bismuth, cadmium, chromium, arsenic and mercury content inductively coupled plasma atomic emission spectrometry. Aim at
Inductively coupled plasma atomic emission spectrometry for the determination of lead, zinc, bismuth, cadmium, chromium, arsenic and mercury in gold ores and its application
The measurement range.
---Part 14.Determination of the amount of thallium inductively coupled plasma atomic emission spectrometry and inductively coupled plasma mass spectrometry. Item
It lies in inductively coupled plasma atomic emission spectrometry and inductively coupled plasma mass spectrometry for the determination of thallium in gold ore
Method and the applicable measurement range of each method.
---Part 15.Determination of the amount of copper, lead, zinc, silver, iron, manganese, nickel, cobalt, aluminum, chromium, cadmium, antimony, bismuth, arsenic, mercury, selenium, barium and beryllium
Combined plasma mass spectrometry. The purpose is to specify copper, lead, zinc, silver, iron, manganese, nickel, cobalt, aluminum, chromium, cadmium, antimony, bismuth, arsenic,
Inductively coupled plasma mass spectrometry for the determination of mercury, selenium, barium and beryllium and its applicable measurement range.
Chemical analysis methods of gold ore
Part 5.Determination of the amount of lead
1 Scope
This document specifies the method for determining the amount of lead in gold ore.
This document includes two measurement methods. Method 1 and Method 2.Method 1 is suitable for the determination of lead in gold ore, and the measurement range is.
0.10%~5.00%; Method 2 is suitable for the determination of lead in gold ores with barium content less than 1%, and the measurement range. >5.00%~15.00%.
2 Normative references
The contents of the following documents constitute the indispensable clauses of this document through normative references in the text. Among them, dated quotations
Only the version corresponding to that date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to
This document.
GB/T 17433 Basic terminology for chemical analysis of metallurgical products
3 Terms and definitions
The terms and definitions defined in GB/T 17433 apply to this document.
3.1
Laboratorysample
A sample prepared to be sent to a laboratory for inspection or testing.
[Source. GB/T 17433-2014,2.3.2.1]
3.2
Testsample
A sample that is further prepared from laboratory samples and can be weighed.
[Source. GB/T 17433-2014, 2.3.2.2]
3.3
Sample testportion
A certain amount of sample weighed for inspection or observation.
[Source. GB/T 17433-2014, 2.3.2.3]
4 Method 1.Flame atomic absorption spectrometry
4.1 Principle
The sample is dissolved with hydrochloric acid, nitric acid, and perchloric acid. In the dilute hydrochloric acid medium, at the wavelength of 283.3nm of the atomic absorption spectrometer, the air-ethyl
The acetylene flame measures the absorbance of lead.
4.2 Reagents or materials
Unless otherwise specified, only use reagents and distilled or deionized water or equivalent purity water confirmed to be analytically pure in the analysis.
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