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YS/T 990.14-2014: Methods for chemical analysis of copper matte. Part 14: Determination of zinc content. Atomic absorption spectrmetry and NazEDTA titration methods
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Methods for chemical analysis of copper matte. Part 14: Determination of zinc content. Atomic absorption spectrmetry and NazEDTA titration methods
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YS/T 990.14-2014
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Basic data | Standard ID | YS/T 990.14-2014 (YS/T990.14-2014) | | Description (Translated English) | Methods for chemical analysis of copper matte. Part 14: Determination of zinc content. Atomic absorption spectrmetry and NazEDTA titration methods | | Sector / Industry | Nonferrous Metallurgy Industry Standard (Recommended) | | Classification of Chinese Standard | H13 | | Classification of International Standard | 77.120.30 | | Word Count Estimation | 9,997 | | Date of Issue | 10/14/2014 | | Date of Implementation | 4/1/2015 | | Regulation (derived from) | People's Republic of China Ministry of Industry and Information Technology Notice 2014 No. 63; Industry Standard Filing Notice 2014 No. 12 (Overall No. 180) | | Issuing agency(ies) | Ministry of Industry and Information Technology | | Summary | This Standard specifies the method for determination of copper and zinc content in the ice. This section applies to the determination of copper ice zinc content. The method of measuring a range of 0.20% to 2.00%, the range of the second measurement method | YS/T 990.14-2014: Methods for chemical analysis of copper matte. Part 14: Determination of zinc content. Atomic absorption spectrmetry and NazEDTA titration methods
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Methods for chemical analysis of copper matte Part 14. Determination of zinc content Atomic absorption spectrmetry and NazEDTA titration methods
ICS 77.120.30
H13
People's Republic of China Nonferrous Metals Industry Standard
Matte chemical analysis
Part 14. Determination of zinc contents
Atomic absorption spectrometry and titration Na2EDTA
Part 14. Determinationofzinccontent-
Issued on. 2014-10-14
2015-04-01 implementation
Ministry of Industry and Information Technology of the People's Republic of China released
Foreword
YS/T 990 "Methods for chemical analysis of copper matte" is divided into 18 parts.
--- Part 1. Determination of copper content iodometry;
--- Part 2. Determination of gold and silver atomic absorption spectroscopy and fire assay;
--- Part 3. Determination of sulfur content - Gravimetric method and combustion titration method;
--- Part 4. Determination of the amount of bismuth atomic absorption spectrometry;
--- Part 5. Determination of the amount of fluorine ion selective electrode method;
--- Part 6. Determination of lead content - Atomic absorption spectroscopy and Na2EDTA titration;
--- Part 7. Determination of cadmium content - Atomic absorption spectrometry;
--- Part 8. Determination of arsenic content by hydride generation - atomic fluorescence spectrometry, diethyl dithiocarbamate spectrophotometry silver
And potassium bromate titration;
--- Part 9. Determination of iron content dichromate method;
--- Part 10. Determination of silicon dioxide content molybdenum blue spectrophotometric method and silicon potassium fluoride titration;
--- Part 11. Determination of the amount of nickel atom absorption spectrometry;
--- Part 12. Determination of the amount of chromium oxide of aluminum Azure S Spectrophotometry;
--- Part 13. Determination of magnesium oxide content - Atomic absorption spectrometry;
--- Part 14. Determination of the amount of zinc atomic absorption spectrometry and Na2EDTA titration;
--- Part 15. Determination of antimony content - Atomic absorption spectrometry;
--- Part 16. Determination of mercury content - Cold atomic absorption spectrometry;
--- Part 17. Determination of the amount of cobalt atomic absorption spectrometry;
--- Part 18. lead, zinc, nickel, arsenic, bismuth, antimony, calcium, magnesium, cadmium, cobalt content - Inductively coupled plasma atomic emission spectrometry.
This section YS/T Part 14 990.
This section drafted in accordance with GB/T 1.1-2009 given rules.
The non-ferrous metal part by the National Standardization Technical Committee (SAC/TC243) centralized.
This section is responsible for drafting unit. Zhongtiaoshan Nonferrous Metals Group Co., Ltd. Daye Nonferrous Metals Group Holdings Limited.
Part 1 Drafting Unit. Beijing Nonferrous Metal Research Institute.
The unit participated in the drafting Part 1. General Research Institute of Mining and Metallurgy Beijing, People's Republic of China, Ningbo Entry-Yanggu Xiang
Light Copper Co., Ltd., Hangzhou Fuchunjiang Smelting Co., Ltd., Tongling Nonferrous Metals Group Holdings Co., Ltd., Yunnan Copper Company Limited.
This section Method 2 drafting units. Zhuzhou Smelter Group Co., Ltd.
This section participated in the drafting Method 2. Beijing General Research Institute of Mining and Metallurgy, Yanggu Yoshimitsu Copper Co., Ltd., Guangzhou Nonferrous Metal Research Institute, cloud
Southern Copper Co., Ltd., Hangzhou Fuchunjiang Smelting Co., Ltd.
The main drafters of this Part 1. Liu Fang, Li Na, Liu Ying, Li sweet, Han Xiao Feng advanced Nikai Jie Liu in the United States, million pairs, Qi month flower,
Liao Zhang, Liu Rong, Cheng Haoyu, Ye Xin, Jin Tao, Zheng Wenying.
The main drafters of this section Method 2. Dingai Mei to De Lei, REN Zhi full, new FAN Li, Liu Junxia, Shen Li, Dai Fengying, Xujie Yu, Wang Chuanfei,
Zheng Wenying, Zhang Liao.
Matte chemical analysis
Part 14. Determination of zinc contents
Atomic absorption spectrometry and titration Na2EDTA
1 Scope
This section YS/T 990 specifies the method for determination of copper matte zinc content.
This section applies to the determination of copper ice zinc content. 1 measured in the range of 0.20% to 2.00%; Tier 2 measurement range
2.00% - 6.00%.
2. Method 1. atomic absorption spectrometry
2.1 Method summary
After the sample with hydrochloric acid, nitric acid, hydrofluoric acid, perchloric acid is dissolved, using air - acetylene flame atomic absorption spectrometer at a wavelength of 213.9nm
Measuring the absorbance of zinc, according to the standard curve method to calculate the amount of zinc.
2.2 Reagents
Unless otherwise indicated, used in the analysis confirmed only for the gifted class pure reagents and distilled or deionized water or equivalent purity.
2.2.1 hydrochloric acid (ρ = 1.19g/mL).
2.2.2 nitric acid (ρ = 1.40g/mL).
2.2.3 nitric acid (11).
2.2.4 hydrofluoric acid (ρ = 1.15g/L).
2.2.5 perchloric acid (ρ = 1.68g/L).
2.2.6 standard zinc stock solution. Weigh 1.0000g zinc metal (wZn≥99.99%), placed in 250mL beaker, add 10mL of nitric acid
(2.2.3), low heat until completely dissolved, remove nitrogen oxides micro-boiling, cooled and transferred to 1000mL volumetric flask, dilute to the mark,
Mix well. 1mL solution containing 1mg zinc.
2.2.7 Zinc standard solution. Pipette 10.00mL standard zinc stock solution (2.2.6) in 100mL volumetric flask, 10mL of nitric acid was added (2.2.3),
Dilute with water to volume, and mix. This solution 1mL containing 100μg zinc.
2.3 Instrument
Flame atomic absorption spectrometer, with zinc hollow cathode lamp.
Under optimum working conditions for those who can reach the following indicators can be used.
--- Characteristic concentration. a solution in the measurement matrix consistent solution, characterized in zinc concentration is not more than 0.01μg/mL.
--- Precision. standard solution with the highest concentration of 11 times the absorbance measurements, the standard deviation should not exceed the average absorbance of 1.0%;
The lowest concentration of standard solution used (instead of "zero concentration" standard solution) 11 measuring the absorbance, which shall not exceed the maximum standard deviation
0.5% concentration of the standard average absorbance.
--- Linear curve. the curve according to concentration, is divided into five sections, the difference between the absorbance of the absorbance difference between the highest and the lowest segment of the segment
Ratio of not less than 0.85.
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