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YS/T 244.6-2008: Chemical analysis methods of high purity aluminium. Part 6: Determination of silver content by calalyze reaction system of manganese-persulfric acid method
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Chemical analysis methods of high purity aluminium. Part 6: Determination of silver content by calalyze reaction system of manganese-persulfric acid method
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YS/T 244.6-2008
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Basic data | Standard ID | YS/T 244.6-2008 (YS/T244.6-2008) | | Description (Translated English) | Chemical analysis methods of high purity aluminium. Part 6: Determination of silver content by calalyze reaction system of manganese-persulfric acid method | | Sector / Industry | Nonferrous Metallurgy Industry Standard (Recommended) | | Classification of Chinese Standard | H12 | | Classification of International Standard | 77.040.30 | | Word Count Estimation | 6,611 | | Date of Issue | 2008-03-12 | | Date of Implementation | 2008-09-01 | | Regulation (derived from) | NDRC Notice No. 25 of 2008 | | Issuing agency(ies) | National Development and Reform Commission | | Summary | This standard provides high purity aluminum Determination of silver content. This standard applies to high- purity aluminum in silver content. Measuring range: 0. 00002% 0. 00010%. | YS/T 244.6-2008: Chemical analysis methods of high purity aluminium. Part 6: Determination of silver content by calalyze reaction system of manganese-persulfric acid method
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Chemical analysis methods of high purity aluminium.Part 6. Determination of silver content by calalyze reaction system of manganese-persulfric acid method
ICS 77.040.30
H12
People's Republic of China Nonferrous Metals Industry Standard
Chemical analysis methods of high purity aluminum
Part 6. Catalytic manganese - sulfuric acid system through Law
Determination of silver content
Posted 2008-03-12
2008-09-01 implementation
National Development and Reform Commission issued
Foreword
YS/T 244 "Chemical analysis methods of high purity aluminum" is divided into nine sections.
--- Part 1. phenanthroline - thiocyanate spectrophotometric determination of iron content;
--- Part 2. molybdenum blue extraction and spectrophotometric determination of silicon content;
--- Part 3. Two-antipyrine DAM - spectrophotometric determination of titanium content thiocyanate;
--- Part 4. Butyl Rhodamine B spectrophotometric determination of gallium content;
--- Part 5. Determination of copper, zinc and lead content anodic stripping voltammetry;
--- Part 6. Catalytic manganese - sulfuric acid system through the determination of silver content;
--- Part 7. dithizone extraction and spectrophotometric determination of cadmium content;
--- Part 8. crystal violet extraction and spectrophotometric determination of indium content;
--- Part 9. Determination of impurities by inductively coupled plasma mass spectrometry.
Part is divided into 6 sections.
This part is YS/T 275-2000 "high purity" in Appendix A of the amendments, the main changes are as follows.
--- Due to high purity aluminum silver content is very low, it will modify its measurement range is. "~ 0.00050% 0.00008% ';
--- Added "repeatability" clause;
--- Increase the "quality assurance and control" clause.
The non-ferrous metal part by the National Standardization Technical Committee and centralized.
This part of the Fushun Aluminum Co., Ltd., China Nonferrous Metals Industry Institute of Standards Metrology and Quality is responsible for drafting.
This part of the Fushun Aluminum Co. drafted.
The main drafters of this section. Yang Yuhong, Liu Shulan, original Jianchang.
Chemical analysis methods of high purity aluminum
Part 6. Catalytic manganese - sulfuric acid system through Law
Determination of silver content
1 Scope
This section specifies the determination method of high purity silver content.
This section applies to the determination of high-purity aluminum in silver content. Measurement range. ~ 0.00002% 0.00010%.
2 Method summary
Sample was dissolved with hydrochloric acid, nitric acid. In pH1 ~ pH3 solution with dithizone - CTC silver Enrichment. In an acidic medium
Borrowed silver manganese - Determination of silver sulfate through catalytic reaction system.
3 Reagents
Reagent preparation and analysis of water are deionized water and then purified by distillation quartz distiller.
3.1 ethanol, pure class distinctions.
3.2 hydrochloric acid (ρ1.19g/mL), pure class distinctions.
3.3 hydrochloric acid (1 + 3), pure class distinctions.
3.4 nitrate (ρ1.42g/mL), pure class distinctions.
3.5 Ascorbic acid (50g/L), pure class distinctions.
3.6 dithizone - carbon tetrachloride solution (0.05g/L).
3.7 sulfuric acid (1 + 1), pure class distinctions.
3.8 perchloric acid (700g/L), pure class distinctions.
3.9 phosphoric acid (1 + 1).
3.10 manganese sulfate (0.006mol/L).
3.11 potassium persulfate.
3.12 Silver Standard stock solution. Weigh 0.1575g of silver nitrate (99.99%), dissolved in water and transferred to 1000mL volumetric flask (brown),
Dilute with water to volume, and mix. This solution 1mL containing 0.1mg silver.
3.13 Silver standard solution. Pipette 10.0mL silver standard stock solution (3.12) in 100mL volumetric flask, dilute with water to volume, and mix.
Then from this solution Pipette 10.0mL solution in 100mL volumetric flask, dilute to the mark, and this solution 1mL containing 0.1μg silver.
4 instruments and equipment
Spectrophotometer.
5 Sample
Sample 5.1 with hydrochloric acid (3.3) soaked for more than 3h, washed with deionized water, and dried over anhydrous ethanol (3.1) a dip.
The sample was 5.2 (5.1) drying 2h ~ 3h at 70 ℃ ~ 80 ℃, placed in a desiccator to cool to room temperature.
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