GB/T 3253.8-2009Methods for chemical analysis of antimony and antimony trioxide - Determination of antimony trioxide content - Iodine titration method (English PDF)
锑及三氧化二锑化学分析方法 三氧化二锑量的测定 碘量法
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
April 8, 2009
Implementation date
February 1, 2010
Scope
GB/T 3253.8-2009 is the English-translated version of 锑及三氧化二锑化学分析方法 三氧化二锑量的测定 碘量法.
GB/T 3253.8-2009 is the Chinese standard "Methods for chemical analysis of antimony and antimony trioxide - Determination of antimony trioxide content - Iodine titration method".
Its scope clause reads: GB/T 3253 provisions of this part of the determination of the amount of antimony trioxide in. This section applies to the determination of the amount of antimony trioxide, antimony trioxide.
Measurement range. 99.00% to 99.95%. Its clauses include method summary; reagents.
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Document preview — GB/T 3253.8-2009
National Standard of the People's Republic of China
- ICS
- 77.120.99
- Classification
- G 13
- Replacing
- GB/T 3254.1-1998
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- 1 Scope
- 2 Normative references
- 3 Method summary
- 4 Reagents
1 Scope
GB/T 3253 provisions of this part of the determination of the amount of antimony trioxide in.
This section applies to the determination of the amount of antimony trioxide, antimony trioxide. Measurement range. 99.00% to 99.95%.
2 Normative references
The following documents contain provisions which, through GB/T reference in this 3253 constitute provisions of this part. For dated reference documents
Member, all subsequent amendments (not including errata content) or revisions do not apply to this section, however, encouraged to reach under this section
Parties to research agreement to use the latest versions of these documents. For undated reference documents, the latest versions apply to this section.
GB/T 3253.1-2008 Methods for chemical analysis of antimony and antimony trioxide - Determination of arsenic content of arsenic molybdenum blue spectrophotometric method
3 Method summary
Sample with tartaric acid dissolved in sodium bicarbonate buffer solution, using starch as indicator, titrate with iodine standard solution to a purple-blue as the end point,
Weigh accurately to consume quality standard iodine solution, to calculate the mass fraction of antimony trioxide.
Arsenic trioxide quantitative interfere with the determination to deal with the correction results after its independent determinations.
4 Reagents
Unless otherwise indicated, the reagents used in this section refer to water and analytical grade and third grade water.
4.1
sodium bicarbonate.
4.2
tartaric acid solution (200g/L).
4.3
Sodium hydroxide solution (230g/L).
4.4 Iodine Standard Solution
4.4.1 preparation
Weigh 10.45g into 1000mL beaker iodide, potassium iodide was added 100g, 200mL of water was added to dissolve and transferred to 1000mL brown
Volumetric flask, dilute with water to volume, and mix.
4.4.2 Calibration
Along with the calibration blank test.
By 7.1 Weigh 0.40000g ± 0.00020g antimony trioxide (mass fraction 99.99%), placed in 500mL conical flask,
Moistened with a little water, add 50mL tartaric acid solution (4.2), the following conduct by 7.4.2. According to equation (1) calculate the standard iodine titration solution real
Inter concentration.
Ba m1 = 0.07288 × (1- m1 m1 m1 2- 3) (1)
Where.
Ba --- the actual concentration of iodine standard titration solution, expressed in moles per kilogram (mol/kg);
M1 --- antimony trioxide mass in grams (g);
M1 --- before calibration, filled with quality standard iodine titration solution (4.4) Titration bottles weighing in grams (g);
M1 2 --- After calibration, quality containing residual iodine titration standard solution (4.4) Titration bottles weighing in grams (g);
......
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 3253.8
| Edition | Title | Revision | Status |
|---|---|---|---|
| GB/T 3253.8-2009 | Methods for chemical analysis of antimony and antimony trioxide - Determination of antimony trioxide content - Iodine titration method | current edition | Current |
| GB/T 3254.1-1998 | Methods for chemical analysis of antimony and antimony trioxide - Determination of antimony trioxide content - Iodine titration method | previous edition | Superseded |
This page sells the current edition, GB/T 3253.8-2009. Earlier editions are listed for reference only.
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