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GB/T 8151.23-2020: Methods for chemical analysis of zinc concentrates - Part 23: Determination of mercury content - Solid sampling and direct mercury analysis method
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Methods for chemical analysis of zinc concentrates - Part 23: Determination of mercury content - Solid sampling and direct mercury analysis method
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GB/T 8151.23-2020
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Basic data | Standard ID | GB/T 8151.23-2020 (GB/T8151.23-2020) | | Description (Translated English) | Methods for chemical analysis of zinc concentrates - Part 23: Determination of mercury content - Solid sampling and direct mercury analysis method | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | H13 | | Classification of International Standard | 77.120.60 | | Word Count Estimation | 7,769 | | Date of Issue | 2020-09-29 | | Date of Implementation | 2021-08-01 | | Regulation (derived from) | National Standard Announcement No. 20 of 2020 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 8151.23-2020: Methods for chemical analysis of zinc concentrates - Part 23: Determination of mercury content - Solid sampling and direct mercury analysis method
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Methods for chemical analysis of zinc concentrates - Part 23.Determination of mercury content - Solid sampling and direct mercury analysis method
ICS 77.120.60
H13
National Standards of People's Republic of China
Chemical analysis methods of zinc concentrate
Part 23.Determination of Mercury Content
Direct solid injection
2020-09-29 released
2021-08-01 implementation
State Administration for Market Regulation
Issued by the National Standardization Management Committee
Foreword
GB/T 8151 "Methods for Chemical Analysis of Zinc Concentrates" is divided into 23 parts.
---Part 1.Determination of the amount of zinc precipitation separation Na2EDTA titration method and extraction separation Na2EDTA titration method;
---Part 2.Determination of sulfur content, combustion neutralization titration method;
---Part 3.Determination of iron content by Na2EDTA titration;
---Part 4.Determination of the amount of silica molybdenum blue spectrophotometry;
---Part 5.Determination of lead content by flame atomic absorption spectrometry;
---Part 6.Determination of copper content by flame atomic absorption spectrometry;
---Part 7.Determination of arsenic content, hydride generation-atomic fluorescence spectrometry and potassium bromate titration;
---Part 8.Determination of cadmium content by flame atomic absorption spectrometry;
---Part 9.Determination of fluorine content ion selective electrode method;
---Part 10.Determination of tin content hydride generation-atomic fluorescence spectrometry;
---Part 11.Determination of the amount of antimony, hydride generation-atomic fluorescence spectrometry;
---Part 12.Determination of silver content by flame atomic absorption spectrometry;
---Part 13.Determination of the amount of germanium, hydride generation-atomic fluorescence spectrometry and phenylfluorenone spectrophotometry;
---Part 14.Determination of nickel content by flame atomic absorption spectrometry;
---Part 15.Determination of Mercury Atomic Fluorescence Spectrometry
---Part 16.Determination of cobalt content by flame atomic absorption spectrometry;
---Part 17.Determination of the amount of zinc hydroxide precipitation-Na2EDTA titration;
---Part 18.Determination of the amount of zinc ion exchange-Na2EDTA titration;
---Part 19.Determination of gold and silver content, lead precipitation or ash blowing fire assay and flame atomic absorption spectrometry;
---Part 20.Determination of copper, lead, iron, arsenic, cadmium, antimony, calcium, magnesium content inductively coupled plasma atomic emission spectrometry;
---Part 21.Determination of thallium content by inductively coupled plasma mass spectrometry and inductively coupled plasma-atomic emission spectrometry;
---Part 22.Determination of zinc, copper, lead, iron, aluminum, calcium and magnesium content by wavelength dispersive X-ray fluorescence spectrometry;
---Part 23.Determination of mercury content Direct method of solid injection.
This part is Part 23 of GB/T 8151.
This section was drafted in accordance with the rules given in GB/T 1.1-2009.
This part was proposed by China Nonferrous Metals Industry Association.
This part is under the jurisdiction of the National Nonferrous Metals Standardization Technical Committee (SAC/TC243).
Drafting organizations of this section. Fangcheng Customs Comprehensive Technical Service Center, China Inspection and Certification Group Guangxi Co., Ltd., Lanzhou Customs Technology Center
Xin, Guangxi Zhuang Autonomous Region Metallurgical Product Quality Inspection Station, Bayuquan Customs Comprehensive Technical Service Center, Lianyungang Customs of the People’s Republic of China,
The Sixth Geological Team of Shandong Bureau of Geology and Mineral Exploration and Development, Guangxi Zhuang Autonomous Region Analysis and Testing Research Center.
The main drafters of this section. Luo Minggui, Xie Yuqun, Li Xiangrong, Wu Sijing, Ma Xin, Li Chanzhen, Chu Ning, Wang Heng, Zhang Tao, Huang Yifan, Wei Yanqiang,
Chen Zhipeng, Ye Lingling, Shi Jinmin, Lai Fuxin, Zhou Lei, Zhuang Mei, Lu Xinxing, Long Zhixiang, Huang Diangui.
Chemical analysis methods of zinc concentrate
Part 23.Determination of Mercury Content
Direct solid injection
1 Scope
This part of GB/T 8151 specifies the method for the determination of mercury content in zinc concentrate.
This section applies to the determination of mercury content in zinc concentrate. Measuring range. 0.50μg/g~150μg/g.
This method is suitable for the arbitration of the mercury content of 0.50μg/g~5μg/g in zinc concentrate.
2 Normative references
The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this article
Pieces. For undated references, the latest version (including all amendments) applies to this document.
GB/T 6682 Analytical laboratory water specifications and test methods
3 Method summary
In an oxygen atmosphere, after the sample is dried and thermally decomposed at a high temperature in the decomposition furnace, the mercury is atomized, and the mercury vapor is brought into a single wavelength by the oxygen flow
Optical absorption cell, measuring the absorbance (peak height or peak area) of mercury at a wavelength of 253.7nm, and calculating the mercury content using the standard curve method.
4 reagent
Unless otherwise specified, only reagents confirmed to be superior grade and above purity are used in the analysis, and the water used meets the requirements of GB/T 6682
Secondary water.
4.1 Nitric acid (ρ=1.42g/mL).
4.2 Nitric acid (1 19).
4.3 Potassium dichromate solution (10g/L). Weigh 1g of potassium dichromate and dissolve it in 100mL of water.
4.4 Mercury standard storage solution. Weigh 1.3540g of mercury dichloride that has been pre-dried with phosphorus pentoxide for 24 hours, place it in a 250mL beaker, and add
Dissolve in a small amount of water, then add 50mL nitric acid (4.1), 10mL potassium dichromate solution (4.3), transfer to a 1000mL volumetric flask, and dilute with water
To the mark, mix well. This solution 1mL contains 1000μg mercury. Or directly use certified reference materials.
4.5 Mercury standard solution A. Pipette 10.00mL mercury standard stock solution (4.4) into a 100mL volumetric flask, add 1mL potassium dichromate
Solution (4.3), dilute to the mark with nitric acid (4.2), and mix. This solution 1mL contains 100μg mercury.
4.6 Mercury standard solution B. Pipette 10.00mL mercury standard solution A (4.5) into a 100mL volumetric flask, add 1mL potassium dichromate solution
(4.3), dilute to the mark with nitric acid (4.2) and mix well. This solution 1mL contains 10μg mercury.
4.7 Oxygen (wO2≥99.99%).
5 Instruments
Direct mercury meter. The instrument parameters are set according to the recommended conditions given in Appendix A.
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