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YS/T 1115.14-2016: Methods for chemical analysis of copper ores and tailings—Part 14: Determination of arsenic content—Hydride generation-atomic fluorescence spectrometric and potassium bromate titrimetric method
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Methods for chemical analysis of copper ores and tailings—Part 14: Determination of arsenic content—Hydride generation-atomic fluorescence spectrometric and potassium bromate titrimetric method
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YS/T 1115.14-2016
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Basic data | Standard ID | YS/T 1115.14-2016 (YS/T1115.14-2016) | | Description (Translated English) | Methods for chemical analysis of copper ores and tailings��Part 14: Determination of arsenic content��Hydride generation-atomic fluorescence spectrometric and potassium bromate titrimetric method | | Sector / Industry | Nonferrous Metallurgy Industry Standard (Recommended) | | Classification of Chinese Standard | D42 | | Classification of International Standard | 73.060 | | Word Count Estimation | 9,910 | | Date of Issue | 2016-07-11 | | Date of Implementation | 2017-01-01 | | Regulation (derived from) | Notice of the Ministry of Industry and Information Technology (2016 No. 37) | | Issuing agency(ies) | Ministry of Industry and Information Technology | | Summary | This standard specifies the method for determining the amount of arsenic in copper ore and tailings. | YS/T 1115.14-2016: Methods for chemical analysis of copper ores and tailings—Part 14: Determination of arsenic content—Hydride generation-atomic fluorescence spectrometric and potassium bromate titrimetric method
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Methods for chemical analysis of copper ores and tailings-Part 14. Determination of arsenic content-Hydride generation-atomic fluorescence spectrometry and potassium bromate titrimetric method
ICS 73.060
D42
People's Republic of China non-ferrous metal industry standards
Copper ores and tailings - Chemical analysis methods
Part 14. Determination of arsenic hydride generation
Atomic fluorescence spectrometry and potassium bromate titration
Methods for chemical analysis of copperores and tailings
Part 14.Determinationofarseniccontent Hydridegeneration-atomic
2016-07-11 released
2017-01-01 implementation
Ministry of Industry and Information Technology of the People's Republic of China
Foreword
YS/T 1115-2016 "Copper ore and tailings chemical analysis method" is divided into the following 14 sections.
--- Part 1. Determination of copper content by flame atomic absorption spectrometry;
--- Part 2. Determination of lead content by flame atomic absorption spectrometry;
--- Part 3. Determination of zinc content by flame atomic absorption spectrometry;
--- Part 4. Determination of nickel content by flame atomic absorption spectrometry;
--- Part 5. Determination of cobalt content by flame atomic absorption spectrometry;
--- Part 6. Determination of cadmium content by flame atomic absorption spectrometry;
--- Part 7. Determination of manganese content by flame atomic absorption spectrometry;
--- Part 8. Determination of magnesium content by flame atomic absorption spectrometry;
--- Part 9. Determination of sulfur content by high-frequency infrared absorption and combustion - potassium iodate titration;
--- Part 10. Determination of phosphorus content molybdenum blue spectrophotometry;
--- Part 11. Determination of molybdenum content thiocyanate spectrophotometry;
--- Part 12. Determination of copper, lead, zinc, nickel, cobalt, cadmium, magnesium and manganese content; Inductively coupled plasma atomic emission spectrometry;
--- Part 13. Determination of fluorine content ion selective electrode method and ion chromatography;
--- Part 14. Determination of arsenic hydride generation atomic fluorescence spectrometry and potassium bromate titration.
This section is YS/T 1115-2016 part 14.
This section drafted in accordance with GB/T 1.1-2009 given rules.
This part of the National Non-ferrous Metal Standardization Technical Committee (SAC/TC243) centralized.
The main drafting unit of this section. Beijing Mining and Metallurgy Research Institute, Lianyungang Exit Inspection and Quarantine.
This section participates in the drafting unit. Northwest Nonferrous Metal Research Institute, Tianjin Exit Inspection and Quarantine, Changshu Exit Inspection and Quarantine, Daye
Nonferrous Metals Group Holdings Limited, Nantong Exit Inspection and Quarantine, Zhejiang Fu Ye Group Co., Ltd.
Wang Lixin, Xia Xinyuan, Zhao Xiurong, Liu Leilei, Ma Li, Su Mingyue, Liu Feng, Dou Huaizhi, Qiao Zhu, Liu Runting, Yang Lifei,
Qian Yan.
The main drafters of Method 2. Wang Heng, Xia Xinyuan, Jiang Yu, Wang Jinlei, Mary, Chen Lan, Liao Jiazhang, Liu Runting, Sun Ruize, Xu Min.
Copper ores and tailings - Chemical analysis methods
Part 14. Determination of arsenic hydride generation
Atomic fluorescence spectrometry and potassium bromate titration
1 Scope
YS/T 1115 provisions of this part of the copper ore and tailings Determination of arsenic content.
This section applies to the determination of arsenic in copper ore and tailings. Hydride generation atomic fluorescence spectrometry range of 0.0020% ~
0.20%; potassium bromate titration range of more than 0.20% to 1.00%.
2 Method 1 Hydride Generation Atomic Fluorescence Spectrometry
2.1 Method summary
The sample was decomposed by nitric acid and potassium chlorate, prereduced with ascorbic acid, the impurity elements were masked with thiourea, the arsenic was reduced with potassium borohydride to
Hydride, with argon gas introduced into the quartz furnace at atomic fluorescence spectrometer to measure the fluorescence intensity, working curve method to calculate the amount of arsenic.
2.2 Reagents
Unless otherwise specified, only reagents identified as analytical grade are used in the analysis. The water used is either distilled or deionized water or equivalent
Water.
2.2.1 Thiourea.
2.2.2 Ascorbic acid.
2.2.3 potassium borohydride.
2.2.4 sodium hydroxide, excellent grade pure.
2.2.5 potassium chlorate, excellent pure grade.
2.2.6 hydrochloric acid (ρ = 1.19g/mL), excellent grade pure.
2.2.7 nitric acid (ρ = 1.42g/mL), excellent grade pure.
2.2.8 sulfuric acid (ρ = 1.84g/mL), excellent grade pure.
2.2.9 Hydrochloric acid (1 1).
2.2.10 Sulfuric acid (1 1).
2.2.11 Hydrochloric acid (1 9).
2.2.12 sodium hydroxide solution (200g/L).
2.2.13 thiourea-ascorbic acid mixed solution Weigh 5g thiourea (2.2.1) and 5g ascorbic acid (2.2.2), dissolved in water, diluted to
100mL, mix well. When used with the time.
2.2.14 potassium borohydride and sodium hydroxide mixed solution Weigh 2.5g of potassium borohydride (2.2.3) and 0.4g of sodium hydroxide (2.2.4) was dissolved in
100mL water, mix well. When used with the time.
2.2.15 arsenic standard storage solution Weigh 0.1320g arsenic trioxide (reference reagent, pre-baked at 100 ℃ ~ 105 ℃ 1h, placed in dry
Cooled to room temperature in a desiccator) in 100mL beaker, add 5mL sodium hydroxide solution (2.2.12), low temperature heating to dissolve, add 50mL
Water, 2 drops of phenolphthalein ethanol solution (2.2.18), with hydrochloric acid (2.2.9) and red just disappeared, and then an excess of 2mL, transferred to 1000mL volumetric flask
, Diluted with water to the mark, mix, the solution 1mL containing 100μg arsenic.
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