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GB/T 22660.1-2008: Chemical analysis methods of lithium fluoride -- Part 1: Preparation and storage of test samples
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 22660.1-2008 | English | 149 |
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Chemical analysis methods of lithium fluoride -- Part 1: Preparation and storage of test samples
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GB/T 22660.1-2008
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Basic data | Standard ID | GB/T 22660.1-2008 (GB/T22660.1-2008) | | Description (Translated English) | Chemical analysis methods of lithium fluoride -- Part 1: Preparation and storage of test samples | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | H60 | | Classification of International Standard | 77.120�� | | Word Count Estimation | 5,576 | | Date of Issue | 2008-12-29 | | Date of Implementation | 2009-11-01 | | Quoted Standard | GB/T 6679 | | 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 sample preparation and storage of raw lithium fluoride and drying of the sample. This section applies to the preparation and storage of the original sample of lithium fluoride and drying of the sample. | GB/T 22660.1-2008: Chemical analysis methods of lithium fluoride -- Part 1: Preparation and storage of test samples
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Chemical analysis methods of lithium fluoride Part 1. Preparation and storage of test samples
ICS 77.120
H60
National Standards of People's Republic of China
Methods for chemical analysis of lithium fluoride
Part 1. Preparation and storage of test samples
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 22660 "Methods for chemical analysis of lithium fluoride" is divided into eight 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 distillation of fluorine content - thorium nitrate volumetric method;
--- Part 4. Determination of magnesium by flame atomic absorption spectrometry;
--- Part 5. Determination of calcium content by flame atomic absorption spectrometry;
--- Part 6. Determination of silicon dioxide content - Molybdenum blue spectrophotometric method;
--- Part 7. Determination of iron oxide content phenanthroline spectrophotometry;
--- Part 8. Determination of sulfate content of barium sulfate gravimetric method.
This section GB/T Part of 122,660.
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 responsible for drafting unit. Fluoride Chemicals Co., Ltd., China Nonferrous Metals Industry Standards and Metrology Institute for Quality.
Participated in the drafting of this section. Hunan Nonferrous fluorine chemical limited liability company, Aluminum Corporation of China Zhengzhou Research Institute.
The main drafters of this section. Xue Xu Jin, Vicky division, Shi Xiuhua, Wang Jianping, BU Law See Liu Tsz Jun, Zhu Liang, Li Zhijian, INNER,
Even Mingxia.
Methods for chemical analysis of lithium fluoride
Part 1. Preparation and storage of test samples
1 Scope
This section GB/T 22660 specifies the preparation and storage of the original sample of lithium fluoride and dried specimens.
This section applies to the preparation and storage of the original sample and the lithium fluoride was dried samples.
2 Normative references
The following documents contain provisions which, through reference GB/T 22660 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 6679 General rules for sampling solid chemical products
Preparation and storage of specimens 3
3.1 laboratory sample
Using GB/T 6679 stipulated in laboratory sample preparation and storage methods.
3.2 Preparation of the original sample
For some geometric properties measured for testing certain physical and physico-chemical properties, as well as for determination of hygroscopic moisture. Take about 300g solid
Laboratory sample (3.1) to be stored in a sealed container, the capacity of the container to be almost full sample is appropriate.
3.3 Preparation of dry sample
For chemistry experiments, some measuring geometric characteristics and certain physical and chemical physics test.
3.3.1 Sample grinding
The sample was milled and sieved through a 75μm sieve until all till mixed well.
3.3.2 Equipment
3.3.2.1 test sieve. pore size of 75μm. By not introducing an impurity element into the material under test.
3.3.2.2 mortar. made of corundum or agate.
3.3.2.3 electric oven. Natural convection ventilation, to control the temperature of 110 ℃ ± 2 ℃.
3.3.3 Procedure
3.3.3.1 About 100g laboratory sample (3.1) through the test sieve (3.3.2.1), the sieve residue particles on the mortar (3.3.2.2 )
Milled and sieved again, carefully screened material plus mix in front of the screen resulting compound. Repeated grinding, sifting, mixing until all samples
All through a sieve so far.
3.3.3.2 The sample (3.3.3.1) into a platinum dish, and put into an electric oven (3.3.2.3), the control temperature of 110 ℃ ± 2 ℃, drying 2h .
Remove platinum dish placed in the dryer to cool from the oven.
3.3.3.3 The dried sample (3.3.3.2) stored in airtight containers, the volume of the container requires just completely filled with the sample is appropriate.
4 container tag
Containers should be labeled, marked with the following.
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