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YS/T 520.8-2007 English PDF

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YS/T 520.8-2007: Chemical analysis of gallium. Part 8: Determination of indium content. The ethyl violet spectrophotometric method
Status: Valid

YS/T 520.8: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
YS/T 520.8-2007English199 Add to Cart 3 days [Need to translate] Chemical analysis of gallium. Part 8: Determination of indium content. The ethyl violet spectrophotometric method Valid YS/T 520.8-2007
YS/T 520.8-2006English199 Add to Cart 2 days [Need to translate] Methods for chemical analysis of gallium. The ethyl violet photometric method for the determination of indium content Obsolete YS/T 520.8-2006

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Basic data

Standard ID YS/T 520.8-2007 (YS/T520.8-2007)
Description (Translated English) Chemical analysis of gallium. Part 8: Determination of indium content. The ethyl violet spectrophotometric method
Sector / Industry Nonferrous Metallurgy Industry Standard (Recommended)
Classification of Chinese Standard H14
Classification of International Standard 77.120.70
Word Count Estimation 6,652
Date of Issue 2007-11-14
Date of Implementation 2008-05-01
Older Standard (superseded by this standard) YS/T 520.8-2006
Regulation (derived from) NDRC Notice No. 77 of 2007
Issuing agency(ies) National Development and Reform Commission
Summary This standard specifies the determination of indium gallium method. This standard applies to the determination of indium gallium. Measuring range: 0. 0005% to 0. 040% This section does not apply to thallium-containing gallium indium content.

YS/T 520.8-2007: Chemical analysis of gallium. Part 8: Determination of indium content. The ethyl violet spectrophotometric method


---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Chemical analysis of gallium.Part 8. Determination of indium content.The ethyl violet spectrophotometric method ICS 77.120.70 H14 People's Republic of China Nonferrous Metals Industry Standard Replacing YS/T 520.8-2006 Chemical analysis of gallium Part 8. Determination of indium content Ethyl Violet spectrophotometry Posted 2007-11-14 2008-05-01 implementation National Development and Reform Commission issued

Foreword

YS/T 520-2007 "Chemical analysis of gallium" Is the YS/T 520-2006 (formerly GB/T 4375-1984) amendments, divided into Part 12. --- Part 1. Determination of copper content of 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline spectrophotometry --- Part 2. Determination of lead content of 4- (2-pyridyl) - resorcinol spectrophotometry --- Part 3. Determination of aluminum content Chromazurol S- tetradecyl pyridine bromide spectrophotometric method --- Part 4. Determination of iron content of 4,7-diphenyl-1,10-phenanthroline spectrophotometry --- Part 5. Determination of calcium content nitrous oxide - acetylene flame atomic absorption spectrometry --- Part 6. Determination of tin content salicylfluorone - cetyl trimethyl ammonium bromide, spectrophotometry --- Part 7. Determination of silicon content extraction - molybdenum blue spectrophotometric method --- Part 8. Determination of indium content of ethyl violet spectrophotometry --- Part 9. Determination of germanium content Phenylfluorone - polyethylene glycol octyl phenyl ether extraction spectrophotometric method --- Part 10. Determination of zinc content atomic absorption spectrometry --- Part 11. Determination of mercury content of the cold atomic absorption spectrometry --- Part 12. lead, copper, nickel, aluminum, indium and zinc Determination of chemical spectroscopy This section section 8. The partial replacement of YS/T 520.8-2006 (formerly GB/T 4375.8-1984). This part is YS/T 520.8-2006 "Chemical analysis of gallium - Part 8. Determination of indium content of ethyl violet spectrophotometry" Editorial finishing. The non-ferrous metal part by the National Standardization Technical Committee and centralized. This standard by the Aluminum Corporation of China Shandong branch responsible for drafting. Drafters of this section. Chen Jianli, Zang Muwen, Sun Guo, Zhao Shali. The non-ferrous metal part by the National Standardization Technical Committee responsible for the interpretation. This part of the standard replaces the previous editions are. --- YS/T 520.8-2006 (formerly GB/T 4375.8-1984). Chemical analysis of gallium Part 8. Determination of indium content Ethyl Violet spectrophotometry

1 Scope

This section specifies the determination method gallium indium content. This section applies to the determination of gallium indium content. Measurement range. 0.0005% to 0.040%. This section does not apply to the determination of thallium-containing gallium indium content.

2 Method summary

Sample with nitric acid, sulfuric acid dissolved, hydrobromic acid, sulfuric acid to remove smoke tin, mercury bromide. Added 1.5mol/L sulfuric acid medium The potassium iodide, ethyl violet, indium generate ionic association, extracted with benzene. 619nm wavelength spectrophotometer measured absorbance.

3 Reagents

3.1 benzene. 3.2 ethanol. 3.3 nitrate (ρ1.42g/cm 3). 3.4 hydrobromide (ρ1.49g/cm 3). 3.5 sulfate (1 + 1). 3.6 sulfate (1 + 2). 3.7 HCl (1 + 1). 3.8 potassium iodide solution (6mol/L). the time is now equipped with. 3.9 sodium thiosulfate solution (20g/L). 3.10 ethyl violet solution (2g/L). 3.11 indium standard stock solution. Weigh 0.1209g spectroscopically pure indium oxide [(In2O3) ≥99.99%], hydrochloric acid was added 10mL (3.7), on a water bath heated to dissolve, add 50mL sulfuric acid (3.5) and evaporated to smoke, remove the cooling water of dissolved salts and moved 1000mL volumetric flask, dilute with water to volume, and mix. This solution 1mL containing 100μg of indium. 3.12 Indium standard solution. Pipette 50.00mL an indium standard stock solution (3.11) was placed in 500mL volumetric flask, add 10mL sulfuric acid (3.5), dilute to the mark and mix. This solution 1mL containing 10μg indium.

4 Instrument

Spectrophotometer.

5 Sample

The samples in sealed Teflon bottle, placed in 50 ℃ water bath until the sample is completely converted to a liquid state, shaken, cooled to Room temperature before use. Step 6 Analysis 6.1 Determination of the number of Independently measured twice and averaged.

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