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YS/T 990.5-2014: Methods for chemical analysis of copper matte. Part 5: Determination of fluorine content. Ion-selective electrode method
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Methods for chemical analysis of copper matte. Part 5: Determination of fluorine content. Ion-selective electrode method
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YS/T 990.5-2014
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Basic data | Standard ID | YS/T 990.5-2014 (YS/T990.5-2014) | | Description (Translated English) | Methods for chemical analysis of copper matte. Part 5: Determination of fluorine content. Ion-selective electrode method | | Sector / Industry | Nonferrous Metallurgy Industry Standard (Recommended) | | Classification of Chinese Standard | H13 | | Classification of International Standard | 77.120.30 | | Word Count Estimation | 7,778 | | 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 the determination of fluorine content in the matte. This section applies to the determination of copper in ice fluorine content. Measured in the range of 0.010% to 0.30%. | YS/T 990.5-2014: Methods for chemical analysis of copper matte. Part 5: Determination of fluorine content. Ion-selective electrode method
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Methods for chemical analysis of copper matte Part 5. Determination of fluorine content Ion-selective electrode method
ICS 77.120.30
H13
People's Republic of China Nonferrous Metals Industry Standard
Matte chemical analysis
Part 5. Determination of the amount of fluorine
Ion Selective Electrode
Part 5. Determinationoffluorinecontent-
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 Part 5 990.
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.
This section is drafted. Ningbo CIQ.
Participated in the drafting of this section. Hangzhou Fuchunjiang Smelting Co., Ltd., Shenzhen Lingnan Nonferrous Metals Co., Ltd., the Chinese people
Lianyungang People's Republic of Exit Inspection and Quarantine, Beijing Nonferrous Metal Research Institute, People's Republic of China, Nantong CIQ.
The main drafters of this section. Caoguo Zhou, Liu Mei, Chenshao Hong, Zhang Liao, Xia Xinyuan, Huang Ping, Zhang Diankai, Douhuai Zhi, Wang Heng, Zhang Xiaodong,
Ye Zhou, left Hong Yi Ding Hao.
Matte chemical analysis
Part 5. Determination of the amount of fluorine
Ion Selective Electrode
1 Scope
This section YS/T 990 specifies the method for determination of copper matte fluorine content.
This section applies to the determination of copper in ice fluorine content. Determination range of 0.010% to 0.30%.
2 Method summary
Sample with sodium peroxide and sodium hydroxide melt decomposition, leaching the melt water after filtration, iron, copper and other interfering ions precipitate as hydroxides
Isolated, sodium citrate - triethanolamine medium, the control solution pH6.5 ~ 7.0, a saturated calomel electrode as reference electrode selection circuit, fluoride ion
Extremely indicator electrode, potentiometric determination of fluorine content meter.
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 sodium peroxide.
3.2 sodium hydroxide.
3.3 hydrochloric acid (ρ = 1.19g/mL).
3.4 nitric acid (ρ = 1.42g/mL).
3.5 nitric acid (14).
3.6 sodium citrate solution (294g/L). Weigh 294g of sodium citrate (Na3C6H5O7 · 2H2O) was dissolved in water, diluted with water
To 1000mL.
Triethanolamine 3.7. 100mL Triethanolamine [N (CH2CH2OH) 3] added 64mL of hydrochloric acid (3.3) was adjusted to pH6.5 ~ 7.0, water
Diluted to 500mL, and mix.
3.8 fluoro standard stock solution. Weigh 0.2210g NaF, dissolved in water and transferred to 1000mL volumetric flask, dilute to the mark with water, mix
uniform. Store in a polyethylene bottle. This solution 1mL containing 100μg fluorine.
3.9 fluoro standard solution. Pipette 10.00mL fluoro standard stock solution (3.8) in 100mL volumetric flask, dilute with water to volume, and mix.
Immediately transferred to dry plastic bottles. This solution 1mL containing 10μg fluorine.
3.10 Phenol red solution (2g/L). Weigh 0.1g of phenol red, add 6mL sodium hydroxide solution (0.05mol/L), diluted with water to
50mL, mix well.
4 Instrument
4.1 FISE. Requires fluorine content in 1 × 10-6mol/L ~ 1 × 10-1mol/L concentration, and the concentration of the negative electrode potential of
The number was a good linear relationship. Electrodes before use in 1 × 10-3mol/L sodium fluoride solution soak 1h, so that activation, and then washed with water
To wash the fluorine-containing liquid is not more than 1 × 10-6mol/can only be determined after L.
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