GB/T 4325.12-2013Methods for chemical analysis of molybdenum - Part 12: Determination of silicon content - Inductively coupled plasma atomic emission spectrometry (English PDF)
钼化学分析方法 第12部分：硅量的测定 电感耦合等离子体原子发射光谱法
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
May 9, 2013
Implementation date
February 1, 2014
Scope
GB/T 4325.12-2013 is the English-translated version of 钼化学分析方法 第12部分：硅量的测定 电感耦合等离子体原子发射光谱法.
GB/T 4325.12-2013 is the Chinese standard "Methods for chemical analysis of molybdenum - Part 12: Determination of silicon content - Inductively coupled plasma atomic emission spectrometry".
Its scope clause reads: GB/T 4325 This section specifies the method for determination of molybdenum silicon content. This section applies to molybdenum powder, molybdenum, molybdenum trioxide, ammonium molybdate determination of silicon content.
Measurement range. 0.0002% to 0.100%. Its clauses include method summary; reagents; instrument.
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Document preview — GB/T 4325.12-2013
National Standard of the People's Republic of China
- ICS
- 77.120.99
- Classification
- H 63
- Replacing
- GB/T 4325.12-1984
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- 1 Scope
- 2 Method summary
- 3 Reagents
- 4 Instrument
1 Scope
GB/T 4325 This section specifies the method for determination of molybdenum silicon content.
This section applies to molybdenum powder, molybdenum, molybdenum trioxide, ammonium molybdate determination of silicon content. Measurement range. 0.0002% to 0.100%.
2 Method summary
Sample with hydrogen peroxide, sodium hydroxide decomposition, acidified with nitric acid, under selected conditions, inductively coupled plasma emission spectrometer,
Wavelength 252.411nm or 288.158nm measured emission intensity, calculate the mass fraction of the measured elements by working curve method.
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
Hydrogen peroxide (rho = 1.10g/mL), pure class distinctions.
3.2
nitric acid (rho = 1.42g/mL), pure class distinctions.
3.3
Sodium hydroxide solution (200g/L), pure class distinctions.
3.4
molybdenum trioxide, pure spectrum.
3.5
molybdate, pure spectrum.
3.6 silicon standard stock solution
Weigh 0.1069g calcined at 900 °C to constant weight of silica (reference reagent), placed in a platinum crucible, add
3g into anhydrous sodium carbonate in 900 °C melted, cooled, dissolved in water and transferred to 500mL volumetric flask, dilute with water to volume, and mix. Storage
Stored in plastic bottles. This solution 1mL containing 100µg silicon.
3.7 Silicon standard solution
Pipette 10.00mL silicon standard stock solution (3.6) in 100mL volumetric flask, dilute to the mark, mix,
Store in plastic bottle. This solution 1mL containing 10µg silicon.
4 Instrument
OES. Resolution < 0.006nm (200nm office).
Step 5 Analysis 5.1 Determination of the number of
Independently measured twice and averaged.
5.2 Sample
Table 1 weighed amount of sample, accurate to 0.0001g.
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
Similar standards
Editions of GB/T 4325.12
| Edition | Title | Revision | Status |
|---|---|---|---|
| GB/T 4325.12-2013 | Methods for chemical analysis of molybdenum - Part 12: Determination of silicon content - Inductively coupled plasma atomic emission spectrometry | current edition | Current |
| GB/T 4325.12-1984 | Methods for chemical analysis of molybdenum - Part 12: Determination of silicon content - Inductively coupled plasma atomic emission spectrometry | previous edition | Superseded |
This page sells the current edition, GB/T 4325.12-2013. Earlier editions are listed for reference only.
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Related Standards
GB/T 4325.1-2013 — Methods for chemical analysis of molybdenum - Part 1: Determination of lead content - Graphite furnace atomic absorption spectrometry
GB/T 4325.10-2013 — Methods for chemical analysis of molybdenum - Part 10: Determination of copper content - Flame atomic absorption spectrometry
GB/T 4325.11-2013 — Methods for chemical analysis of molybdenum - Part 11: Determination of aluminum content - Chromazurol S spectrophotometry and inductively coupled plasma atomic emission spectrometry
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