YS/T 535.10-2009Chemical analysis methods of sodium fluoride. Part 10: Preparation and storage of test samples (English PDF)

Foreword

YS/T 535 "chemical analysis of sodium fluoride" is divided into 10 parts.

--- Part 1. Determination of the weight of water in the wet method;

--- Part 2. Determination of distillation of fluorine content - thorium nitrate titration volumetric method;

--- Part 3. Determination of silicon content - Molybdenum blue spectrophotometric method;

--- Part 4. Determination of iron content phenanthroline spectrophotometry;

--- Part 5. Determination of soluble sulfate turbidity method;

--- Part 6. Determination of carbonate content - Gravimetric method;

--- Part 7. Determination of acidity and law;

--- Part 8. Water-insoluble content - Gravimetric method;

--- Part 9. Determination of chlorine turbidity method;

--- Part 10. Preparation and storage of test samples.

This section 10.

The partial replacement of YS/T 535.10-2006 (formerly GB/T 8158.10-1987).

This part is YS/T 535.10-2006 "sample preparation and storage of sodium fluoride," the amendment.

The non-ferrous metal part by the National Standardization Technical Committee and centralized.

This part of the Fushun Aluminum Co., Ltd., China Nonferrous Metals Industry Institute of Standards Metrology and Quality is responsible for drafting.

This part of the Fushun Aluminum Co. drafted.

1 Scope

This section specifies the method of preparation and storage of the original sample and the sodium fluoride dried sample.

This section applies to the preparation and storage of the original sample and the sodium fluoride dried sample.

2 Normative references

The following documents contain provisions which, through reference in this text, constitute provisions of this part. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this section, however, encourage the parties to this part of the research agreement Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this section.

YS/T 517 sodium fluoride

3 Instruments and equipment

3.1 Test sieve. its sieve size of 0.125mm. Select the test sieve according to the nature and sodium fluoride measured impurity elements.

3.2 mortar. steel made of jade or agate.

3.3 Electric oven. Natural convection ventilation, to control the temperature of 110 °C ± 5 °C.

Preparation and storage of the sample 4

5 Container tag

Container must be labeled, marked with the following.

a) Name of the sample;

b) the sample source;

c) the nature of the sample (raw or dried);

d) The model with a sieve;

e) the date of preparation.