YS/T 461.6: Evolution and historical versions
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| YS/T 461.6-2024 | English | RFQ |
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(Chemical analysis method for mixed lead-zinc concentrate - Part 6: Determination of mercury content - Atomic Fluorescence Spectrometry and Solid Sampling Direct Method)
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YS/T 461.6-2024
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| YS/T 461.6-2013 | English | 239 |
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Methods for chemical analysis of lead and zinc bulk concentrates. Part 6: The determination of mercury content. Atomic fluorescence spectrometry
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YS/T 461.6-2013
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| YS/T 461.6-2003 | English | 239 |
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The methods for chemical analysis of lead and zinc bulk concentrates-The determination of mercury content-The atomic fluorescence spectrometry method
| Obsolete |
YS/T 461.6-2003
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Basic data | Standard ID | YS/T 461.6-2024 (YS/T461.6-2024) | | Description (Translated English) | (Chemical analysis method for mixed lead-zinc concentrate - Part 6: Determination of mercury content - Atomic Fluorescence Spectrometry and Solid Sampling Direct Method) | | Sector / Industry | Nonferrous Metallurgy Industry Standard (Recommended) | | Classification of Chinese Standard | H13 | | Classification of International Standard | 77.120.60 | | Date of Issue | 2024-10-24 | | Date of Implementation | 2025-05-01 | | Older Standard (superseded by this standard) | YS/T 461.6-2013 | | Issuing agency(ies) | Ministry of Industry and Information Technology | | Summary | This standard specifies the methods for determining the mercury content in mixed lead-zinc concentrates by atomic fluorescence spectrometry and solid sampling direct method. This standard applies to the determination of mercury content in mixed lead-zinc concentrates. The atomic fluorescence spectrometry determination range (mass fraction) is 0.0001% to 0.120%, and the solid sampling direct method determination range (mass fraction) is 0.15��g/g to 20��g/g. | YS/T 461.6-2013: Methods for chemical analysis of lead and zinc bulk concentrates. Part 6: The determination of mercury content. Atomic fluorescence spectrometry
---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 lead and zinc bulk concentrates Part 6. The determination of mercury content Atomic fluorescence spectrometry.
ICS 77.120.60
H13
People's Republic of China Nonferrous Metals Industry Standard
Replacing YS/T 461.6-2003
Lead and Zinc concentrates - Methods
Part 6. Determination of the amount of mercury
Atomic Fluorescence Spectrometry
Part 6. Thedeterminationofmercurycontent-
Issued on. 2013-10-17
2014-03-01 implementation
Ministry of Industry and Information Technology of the People's Republic of China released
Foreword
YS/T 461 "Lead and Zinc concentrates - Methods" is divided into 11 parts.
--- Part 1. Determination of the amount of lead and zinc content Na2EDTA precipitation titration;
--- Part 2. Determination of iron content Na2EDTA titration;
--- Part 3. Determination of sulfur content of combustion - neutralization titration method;
--- Part 4. Determination of arsenic content of iodine titration;
--- Part 5. Determination of silicon dioxide content - Molybdenum blue spectrophotometric method;
--- Part 6. Determination of the amount of mercury atomic fluorescence spectrometry;
--- Part 7. Determination of cadmium content by flame atomic absorption spectrometry;
--- Part 8. Determination of copper content - Flame atomic absorption spectrometry;
--- Part 9. Determination of the amount of silver by flame atomic absorption spectrometry;
--- Part 10. the amount of gold and silver contents - fire assay;
--- Part 11. arsenic, bismuth, cadmium, cobalt, copper, nickel, antimony content - Inductively Coupled Plasma - Atomic Emission Spectrometry.
This section YS/T Part 6 461.
This section drafted in accordance with GB/T 1.1-2009 given rules.
The partial replacement of YS/T 461.6-2003 "Lead and Zinc concentrates - Determination of mercury content - Cold atomic fluorescence spectrometry"
Compared with YS/T 461.6-2003, the main changes are as follows.
--- By the method of "cold atomic fluorescence spectrometry" to "Atomic Fluorescence Spectrometry";
--- Text format has been modified;
--- Measurement range from "0.0002% to 0.20%" to "0.0002% to 0.10%";
--- Added "reproducibility" clause, delete the words "to allow poor" clause;
--- Added "the test report" requirement.
The non-ferrous metal part by the National Standardization Technical Committee (SAC/TC243) centralized.
YS/T 461 is responsible for drafting. Shenzhen Lingnan Nonferrous Metals Co., Baiyin Nonferrous Metals Group Co., Ltd.,
Beijing General Research Institute of Mining and Metallurgy.
This section is responsible for drafting. Shenzhen Lingnan Nonferrous Metals Co., Ltd. Shaoguan smelter.
Participated in the drafting of this section. Zhuzhou Smelter Group Co., Ltd., MCC Huludao Nonferrous Metals Group Co., Ltd., Shenzhen
Lingnan Nonferrous Metals Co. Fankou, Beijing General Research Institute of Mining and Metallurgy.
The main drafters of this section. Zhang Xiaojun, division Shilong, Zhai violation week, Zheng Lixia, Li Jie, Gong Hai Yan, Xie Fang Cai, Hsieh cloud, Mary, Temple Chen Geng.
This part of the standard replaces the previous editions are.
--- YS/T 461.6-2003.
Lead and Zinc concentrates - Methods
Part 6. Determination of the amount of mercury
Atomic Fluorescence Spectrometry
1 Scope
This section YS/T 461 provides for determination of the amount of mercury in a mixture of lead and zinc concentrate.
This section applies to the determination of the amount of mercury in a mixture of lead and zinc concentrates. Measurement range. 0.0002% to 0.10%.
2 Method summary
Samples with hydrochloric acid, nitric acid dissolved in dilute hydrochloric acid medium and mercury plasma state by potassium borohydride reduction of mercury atoms by argon gas into the quartz
Furnace atomizer, the fluorescence intensity was measured on a mercury atomic fluorescence spectrometer. According to the standard curve method to calculate the content of mercury.
3 Reagents
Unless otherwise indicated, used in the analysis confirmed only for the gifted class pure reagents and distilled or deionized water or equivalent purity.
3.1 hydrochloric acid (ρ = 1.19g/mL).
3.2 nitric acid (ρ = 1.42g/mL).
3.3 hydrochloric acid (119).
3.4 nitric acid (119).
3.5 Potassium hydroxide (5g/L). Weigh 5g of potassium hydroxide dissolved in 1000mL water, when the existing service.
3.6 solution of potassium borohydride (0.5g/L). Weigh 0.5g of potassium borohydride dissolved in 1000mL potassium hydroxide solution (3.5), and the time is now equipped with.
3.7 Protection of potassium dichromate solution. Weigh 0.5g potassium dichromate 1000mL dissolved in nitric acid (3.4) in.
3.8 Storage mercury standard solution. Weigh placed on silica gel drier sufficiently dried mercury dichloride (≥99.9%) 0.1354g in 400mL beaker
Added 200mL protection potassium dichromate solution (3.7), stirring to dissolve completely protected with potassium dichromate solution (3.7) to move it to 1000mL capacity
Volumetric flask, and dilute to volume, and mix. This solution 1mL containing 0.1mg of mercury.
3.9 mercury standard solution. Pipette 0.50mL mercury standard stock solution (3.8) in 500mL volumetric flask, dilute to the mark with nitric acid (3.4), mixed
uniform. This solution 1mL containing 0.1μg of mercury.
3.10 argon (wAr≥99.99%).
4 Instrument
Atomic fluorescence spectrometer, with a high-intensity mercury hollow cathode lamp.
Under optimum working conditions for those who can reach the following indicators can be used.
--- The detection limit. less than 1.0ng/mL;
--- Precision. with 10ng/mercury measurement standard solution 10 mL of the fluorescence intensity, which should not exceed the standard deviation of the mean fluorescence intensity
5.0%;
--- Correlation coefficient curve is not less than 0.995.
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