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GB/T 22662.9-2008: Chemical analysis methods of potassium fluotitanate -- Part 9: Determination of phosphorus content -- Molybdenum blue photometric method
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Chemical analysis methods of potassium fluotitanate -- Part 9: Determination of phosphorus content -- Molybdenum blue photometric method
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GB/T 22662.9-2008
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Basic data | Standard ID | GB/T 22662.9-2008 (GB/T22662.9-2008) | | Description (Translated English) | Chemical analysis methods of potassium fluotitanate -- Part 9: Determination of phosphorus content -- Molybdenum blue photometric method | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | H61 | | Classification of International Standard | 77.120.10 | | Word Count Estimation | 6,640 | | Date of Issue | 2008-12-29 | | Date of Implementation | 2009-11-01 | | Quoted Standard | GB/T 22662.1-2008 | | Regulation (derived from) | National Standard Approval Announcement 2008 No.23 (Total No.136) | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | | Summary | This standard specifies the method for the determination of phosphorus pentoxide and potassium titanium fluoride content. This section applies to the determination of fluorine potassium titanate pentoxide content. Measurement range: �� 0. 050%. | GB/T 22662.9-2008: Chemical analysis methods of potassium fluotitanate -- Part 9: Determination of phosphorus content -- Molybdenum blue photometric method
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Chemical analysis methods of potassium fluotitanate Part 9. Determination of phosphoruo content Molybdenum blue photometric method
ICS 77.120.10
H61
National Standards of People's Republic of China
Potassium titanate fluorine chemical analysis
Part 9. Determination of phosphorus pentoxide content
Molybdenum blue spectrophotometric method
Posted 2008-12-29
2009-11-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
GB/T 22662 "potassium titanate fluorine chemical analysis method" is divided into nine sections.
--- Part 1. Preparation and storage of test samples;
--- Part 2. Determination of the weight of water in the wet method;
--- Part 3. Determination of fluorine potassium titanate ammonium ferric sulfate volumetric method;
--- Part 4. Determination of silicon content - Molybdenum blue spectrophotometric method;
--- Part 5. Determination of calcium content by flame atomic absorption spectrometry;
--- Part 6. Determination of iron content by flame atomic absorption spectrometry;
--- Part 7. Determination of lead content by flame atomic absorption spectrometry;
--- Part 8. Determination of the chlorine content of mercuric nitrate volumetric method;
--- Part 9. Determination of phosphorus pentoxide content - Molybdenum blue spectrophotometric method.
This is Part 9 GB/T 22662 of.
This part is proposed by the China Nonferrous Metals Industry Association.
The non-ferrous metal part by the National Standardization Technical Committee.
This section is drafted. Hunan Nonferrous fluorine chemical limited liability company.
Participated in the drafting of this section. Fluoride Chemicals Co., Ltd., Zhengzhou Research Institute, Aluminum Corporation of China, Hengyang City State Friends
Chemical Technology Co., Ltd.
The main drafters of this section. Li Zhijian, Zhu Liang, Liao Zhihui, Xue Xu Jin, Shi Xiuhua, Li Yongqiang, Feng Jingdong, Liu Zhihong Huang Ju in particular, Liu Min.
Potassium titanate fluorine chemical analysis
Part 9. Determination of phosphorus pentoxide content
Molybdenum blue spectrophotometric method
1 Scope
This section GB/T 22662 specifies the method for determination of fluorine potassium titanate pentoxide content.
This section applies to the determination of fluorine potassium titanate pentoxide content. Measuring range. ≤0.050%.
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 PRINCIPLE OF THE METHOD
After the sample was dissolved in sulfuric acid, boric acid complex fluorine added ammonium molybdate in pH≤0.3 when phosphorus phosphorus molybdenum heteropoly acid formed by the reduction of
After phosphorus molybdenum blue at 800nm \u200b\u200bwavelength spectrophotometer measured absorbance.
4 Reagents
Sulfuric acid 4.1. 1 + 7.
4.2 boric acid. 40g/L.
4.3 ammonium molybdate solution. 100g/L.
4.4 HCl. 1 + 1.
4.5 ascorbic acid solution. 25g/L.
4.6 pentoxide standard stock solution.
Weigh 0.1917g potassium dihydrogen phosphate (reference reagents, at 110 ℃ drying 2h, cool in a desiccator), was dissolved with water and transferred to
1000mL volumetric flask, dilute with water to volume, and mix. This solution 1mL containing 0.100mgP2O5.
4.7 pentoxide standard solution.
Weigh 10.00mL phosphorus standard stock solution (4.6), in 100mL volumetric flask, dilute with water to volume, and mix. This solution 1mL
Containing 0.0100mgP2O5. The solution was formulated before use now.
4.8 fluorine potassium titanate substrate solution
Weigh 0.625g excellent pure fluorine potassium titanate, the ground, the polyethylene placed in 250mL flask, add 100mL40 ℃ ~
60 ℃ water added 9mL sulfuric acid (4.1), cap tightly, shake flask fluorine potassium titanate completely dissolved, boric acid was added 100mL
(4.2), diluted with water to volume, and mix.
5 instruments and equipment
Common laboratory instruments and equipment.
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