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YS/T 990.7-2014: Methods for chemical analysis of copper matte. Prat 7: Determination of cadmium content. Atomic absorption spectrometry
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Methods for chemical analysis of copper matte. Prat 7: Determination of cadmium content. Atomic absorption spectrometry
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YS/T 990.7-2014
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Basic data | Standard ID | YS/T 990.7-2014 (YS/T990.7-2014) | | Description (Translated English) | Methods for chemical analysis of copper matte. Prat 7: Determination of cadmium content. Atomic absorption spectrometry | | Sector / Industry | Nonferrous Metallurgy Industry Standard (Recommended) | | Classification of Chinese Standard | H13 | | Classification of International Standard | 77.120.30 | | Word Count Estimation | 7,775 | | 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 matte cadmium content. This section applies to the determination of copper in ice cadmium content. Measured in the range of 0.010% to 0.50%. | YS/T 990.7-2014: Methods for chemical analysis of copper matte. Prat 7: Determination of cadmium content. Atomic absorption spectrometry
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Methods for chemical analysis of copper matte Prat 7. Determination of cadmium content Atomic absorption spectrometry.
ICS 77.120.30
H13
People's Republic of China Nonferrous Metals Industry Standard
Matte chemical analysis
Part 7. Determination of cadmium content
Atomic Absorption Spectrometry
Part 7. Determinationofcadmiumcontent-Atomicabsorptionspectrometry
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 spectrometry 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 Section 7990 of.
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.
This section was drafted by. People's Republic of China Ningbo Exit Inspection and Quarantine.
Participated in the drafting of this section. Beijing Mining Research Institute, Hunan Nonferrous Metal Research Institute, Baiyin Nonferrous Metals Group Co., Ltd., Guangzhou
Nonferrous Metal Research Institute, Yunnan Copper Co., Ltd., Fujian Zijin Mining Testing Technology Co., Ltd., Hangzhou Fuchunjiang Smelting Co., Ltd.,
Yanggu Yoshimitsu Copper Co., Ltd., People's Republic of China Exit Inspection and Quarantine Lianyungang, Nantong People's Republic of China Entry-Exit Inspection and
Quarantine Bureau, Tianjin, People's Republic of China Exit Inspection and Quarantine.
The main drafters of this section. Zhu Xiaoyan, Liu Mei, Xiao Daoqing, Shen Lin, Xia Xinyuan, Weiwen Hui, Zhang Liao, Yang Deli, Qin Yujing, Liaobin Ling,
Douhuai Zhi, Han Juan, Dai Fengying, Wang.
Matte chemical analysis
Part 7. Determination of cadmium content
Atomic Absorption Spectrometry
1 Scope
This section YS/T 990 specifies the method for determination of copper matte cadmium content.
This section applies to the determination of copper in ice cadmium content. Determination range of 0.010% to 0.50%.
2 Method summary
Samples with hydrochloric acid, nitric acid, ammonium bromide and hydrogen fluoride decomposition in dilute nitric acid medium, using air - acetylene flame atomic absorption spectrophotometry
Total measured at a wavelength of 228.8nm cadmium absorbance, calculate the amount of cadmium.
3 Reagents
Unless otherwise indicated in the analysis using only recognized as analytical grade 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 nitric acid (11).
3.4 nitric acid (595).
3.5 bromine.
3.6 perchloric acid (ρ = 1.67g/mL).
3.7 Ammonium hydrogen fluoride (saturated solution).
3.8 cadmium standard stock solution. Weigh 1.0000g metal cadmium (wCd≥99.99%), placed in 250mL beaker, add 10mL of nitric acid
(3.2), low-temperature heating until complete dissolution, micro-boiling removing nitrogen oxides, cooled and transferred to 1000mL volumetric flask, dilute to the mark with water, mix
Uniform, stored in a plastic bottle containing 1mg solution 1mL cadmium.
3.9 Cadmium Standard Solution A. Pipette 10mL cadmium standard stock solution (3.8) in 100mL volumetric flask, was added 10mL of nitric acid (3.3), with
Dilute with water to volume, and mix. This solution 1mL containing 100μg cadmium.
3.10 Cadmium standard solution B. Pipette 10mL cadmium standard solution A (3.9) in 100mL volumetric flask, 10mL of nitric acid was added (3.3) Water
Dilute to volume, and mix. This solution 1mL containing 10μg cadmium.
4 instruments and equipment
Atomic absorption spectrometer, with a cadmium 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, characteristic concentration of cadmium should not exceed 0.02μg/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 of the standard solution) 11 measuring the absorbance, which should not exceed the standard deviation
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