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YS/T 520.5-2007: Chemical analysis of gallium. Part 5: Determination of calcium content. The N2O-C2H2 falme atomic absorption spectral method
Status: Valid YS/T 520.5: Evolution and historical versions
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| YS/T 520.5-2007 | English | 199 |
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Chemical analysis of gallium. Part 5: Determination of calcium content. The N2O-C2H2 falme atomic absorption spectral method
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YS/T 520.5-2007
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| YS/T 520.5-2006 | English | 199 |
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Methods for chemical analysis of gallium. The N2O-C2H2 falme atomic absorption spectrophotometric method for the determination of calcium content
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YS/T 520.5-2006
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Basic data | Standard ID | YS/T 520.5-2007 (YS/T520.5-2007) | | Description (Translated English) | Chemical analysis of gallium. Part 5: Determination of calcium content. The N2O-C2H2 falme atomic absorption spectral method | | Sector / Industry | Nonferrous Metallurgy Industry Standard (Recommended) | | Classification of Chinese Standard | H14 | | Classification of International Standard | 77.120.70 | | Word Count Estimation | 6,648 | | Date of Issue | 2007-11-14 | | Date of Implementation | 2008-05-01 | | Older Standard (superseded by this standard) | YS/T 520.5-2006 | | Regulation (derived from) | NDRC Notice No. 77 of 2007 | | Issuing agency(ies) | National Development and Reform Commission | | Summary | This standard specifies the gallium Determination of calcium content. This standard applies to the determination of calcium content of gallium. Measuring range: 0. 00030% to 0. 0080% | YS/T 520.5-2007: Chemical analysis of gallium. Part 5: Determination of calcium content. The N2O-C2H2 falme atomic absorption spectral method
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Chemical analysis of gallium.Part 5. Determination of calcium content.The N2O-C2H2 falme atomic absorption spectral method
ICS 77.120.70
H14
People's Republic of China Nonferrous Metals Industry Standard
Replacing YS/T 520.5-2006
Chemical analysis of gallium
Part 5. Determination of calcium content
Nitrous oxide - acetylene flame atomic absorption spectrometry
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 is Part 5.
The partial replacement of YS/T 520.5-2006 (formerly GB/T 4375.5-1984).
This part is YS/T 520.5-2006 "Chemical analysis of gallium - Part 5. Determination of calcium content of nitrous oxide - acetylene fire
Flame atomic absorption spectrometry, "the 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, Fan Ying, Qi Yanli, Tian Rui.
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 520.5-2006 (formerly GB/T 4375.5-1984).
Chemical analysis of gallium
Part 5. Determination of calcium content
Nitrous oxide - acetylene flame atomic absorption spectrometry
1 Scope
This section provides Determination of gallium content of calcium.
This section applies to the determination of gallium content of calcium. Measurement range. 0.00030% to 0.0080%.
2 Method summary
Sample decomposition with nitric acid and hydrochloric, nitric purge with hydrochloric acid, in 8mol/L hydrochloric acid solution, and extracted with isopropyl ether added after a separation of gallium
Quantitative strontium salt releasing agent, nitric acid - hydrochloric acid medium, at an atomic absorption spectrophotometer at a wavelength of 422.7nm to nitrous oxide - acetylene
Flame measured calcium.
3 Reagents
3.1 Nitric acid. to excellent pure nitric acid (ρ1.42g/cm
3) as a raw material, quartz distillation vessel was heated to maintain micro-boiling distillation, take the middle distillates stored in
Quartz bottle aside.
Nitrate 3.2 (8mol/L). formulated with nitric acid (3.1).
3.3 HCl. sub-boiling distillation purification.
3.4 hydrochloride (8mol/L). formulated with hydrochloric acid (3.3).
3.5 isopropyl ether. in a separatory funnel to 100g/L hydroxylamine hydrochloride solution or wash 200g/L ferrous ammonium sulfate solution was removed by shaking with peroxide
Thereof, then transferred to a distillation flask, on a water bath at 80 ℃ purified by distillation, collecting fractions of 67 ℃ ~ 69 ℃. Then hydrochloric acid (3.4) saturated.
3.6 washing liquid. isopropyl ether (3.5), saturated with hydrochloric acid (3.4).
3.7 strontium chloride solution. Weigh 4.5g of high purity strontium chloride (SrCl2 · 6H2O), dissolved in water and diluted to 100mL. This solution 1mL
Containing approximately 1.5mg strontium.
3.8 nitric acid - hydrochloric acid mixed acid. nitric acid (3.2) and hydrochloric acid (3.4) are mixed in equal volumes.
3.9 Calcium standard stock solution. Weigh 0.2497g advance at 105 ℃ ~ 110 ℃ bake 2h and cooled to room temperature in a dryer benchmark carbonate
Ca [(CaCO3) ≥99.99%], placed in 300mL beaker, add 20mL water, was added dropwise hydrochloric acid (3.3) until completely dissolved and the excess
10mL, boiled rid of carbon dioxide. After cooling, transferred to 1000mL volumetric flask, dilute with water to volume, and mix. This solution containing 1mL
100μg calcium.
3.10 Calcium standard solution. Pipette 50.00mL standard calcium stock solution (3.9), placed in 500mL volumetric flask, was added 5mL hydrochloride
(3.3), dilute to the mark and mix. This solution 1mL containing 10μg calcium.
4 Instrument
Atomic absorption 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.
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