GB/T 22662.8-2008Chemical analysis methods of potassium fluotitanate - Part 8: Determination of chloride content - Distillation-mercury nitration volumetric method (English PDF)
氟钛酸钾化学分析方法 第8部分：氯含量的测定 硝酸汞容量法
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
December 29, 2008
Implementation date
November 1, 2009
Scope
GB/T 22662.8-2008 is the English-translated version of 氟钛酸钾化学分析方法 第8部分：氯含量的测定 硝酸汞容量法.
GB/T 22662.8-2008 is the Chinese standard "Chemical analysis methods of potassium fluotitanate - Part 8: Determination of chloride content - Distillation-mercury nitration volumetric method".
Its scope clause reads: This section GB/T 22662 specifies the method for determination of fluorine chlorine content of potassium titanate. This section applies to the determination of fluorine in potassium titanate chlorine content.
Measuring range. <=0.5%. Its clauses include method summary; reagents; sample; procedure.
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Document preview — GB/T 22662.8-2008
National Standard of the People's Republic of China
- ICS
- 77.120.10
- Classification
- H 61
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- 1 Scope
- 2 Normative references
- 3 Method summary
- 4 Reagents
- 6 Sample
- 7 Procedure
1 Scope
This section GB/T 22662 specifies the method for determination of fluorine chlorine content of potassium titanate.
This section applies to the determination of fluorine in potassium titanate chlorine content. Measuring range. <=0.5%.
2 Normative references
The following documents contain provisions which, through reference GB/T 22662 in this section constitute provisions of this section. 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 22662.1-2008 fluorine potassium titanate chemical analysis methods - Part 1. Preparation and storage of test samples
3 Method summary
In acidic solution nitrate mercury standard solution strongly ionized chlorine ion is converted to weakly ionized mercuric chloride with hydrazine refers diphenylcarbazone
Shows agent with an excess of Hg2 + purple generate complex to determine the end point.
4 Reagents
Nitrate 4.1. 1mol/L.
4.2 nitrate mercury standard titration solution
4.2.1 preparation
Weigh 8.565g mercuric nitrate [Hg (NO3) 2 · H2O, pure class distinctions], placed in 250mL beaker, add 50mL of nitric acid (4.1), the solution was dissolved to clarify, if necessary, filtered and transferred to 1000mL volumetric flask, dilute with water to volume, and mix.
4.2.2 Calibration
Pipette 5.00mL three standard sodium chloride solution (0.0500mol/L), were placed in 250mL flask, add water
To 100mL, add 2 drops of bromophenol blue indicator, solution of nitric acid to the solution was yellow, then 5 drops of excess, added 1mL diphenylcarbazone hydrazine instructions
Agents, mercury nitrate titration standard solution titration solution from yellow to purple is the end. Nitrate mercury standard titration calibrated parallel consumed
Differential should not exceed the volume of the solution 0.05mL, averaged. With calibration blank test.
4.3 diphenylcarbazone hydrazide indicator
5g/L.
4.4 bromophenol blue indicator
2g/L.
5. Apparatus
Commonly used laboratory instruments and equipment.
6 Sample
The specimen shall comply with GB/T 22662.1 requirements in 3.3.
7 Procedure
7.1 Sample
Weigh 1.0g sample (6), 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.
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GB/T 22662.9-2008 — Chemical analysis methods of potassium fluotitanate - Part 9: Determination of phosphoruo content - Molybdenum blue photometric method
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