GB 2468-1981Pyrites and concentrate -- Determination of zinc content -- Flame atomic absorption spectrometric and spectrophotometric methods (English PDF)

Foreword

This standard replaces GB/T 2468.1-1996 "Pyrites and concentrate - Determination of zinc content - Part 1. Flame atomic absorption spectrometry Law "and GB/T 2468.3-1996" Pyrites and concentrate - Determination of zinc content - Part 3. PAN spectrophotometric method ", these two Standard merged into a standard, divided into two methods.

The standard proposed by China Petroleum and Chemical Industry Association.

This standard is under the jurisdiction of Chemical Industry Standardization Technical Committee chemical mine.

This standard was drafted. even in the blue sea and Design Institute.

1 Scope

This standard specifies the flame atomic spectrophotometry Pyrites and concentrate zinc content absorption spectrometry and spectrophotometry.

This standard is applicable to flame atomic absorption spectrometry from 0.01% to 1% in Pyrites and concentrate - Determination of zinc content products, spectrophotometric Law applies to the product concentrate zinc content of 0.01% to 0.3% Pyrites and.

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.

GB/T 6003.1 woven wire mesh test sieve (GB/T 6003.1-1997, eqv ISO 3310-1:1990) GB/T 6682 analytical laboratory use specifications and test methods (GB/T 6682-1992, neq ISO 3696. 1987) GB/T 9721 Chemicals General molecular absorption spectrophotometry (UV and visible part) GB/T 9723 Chemicals flame atomic absorption spectrometry General

3 Sample

The sample passes through 150µm test sieve (GB/T 6003.1), at 100 °C ~ 105 °C drying to constant weight, placed in a desiccator, cooled to Room temperature.

4 General Provisions

The water of this standard shall comply with GB/T 6682 water in three specifications; reagents listed Unless otherwise specified, refer to analytical reagent.

5 Analysis