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GB/T 21134-2007 English PDF

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GB/T 21134-2007: Tobacco and tobacco products -- Determination of silicated residues insoluble in hydrochloric acid
Status: Obsolete
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PDF similar to GB/T 21134-2007


Standard similar to GB/T 21134-2007

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Basic data

Standard ID GB/T 21134-2007 (GB/T21134-2007)
Description (Translated English) Tobacco and tobacco products -- Determination of silicated residues insoluble in hydrochloric acid
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard X85
Classification of International Standard 65.160
Word Count Estimation 8,820
Date of Issue 2007-10-16
Date of Implementation 2008-01-01
Adopted Standard ISO 2817-1999, MOD
Regulation (derived from) China National Standard Approval Announcement2007 No.11 (Total No.111)
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 tobacco (leaf, shredded tobacco and cigarette end, tobacco) and tobacco foreign hydrochloric acid insoluble silicate particles (especially sand) content. This standard applies to tobacco and tobacco products, the determination of hydrochloric acid insoluble content of silicate particles.

GB/T 21134-2007: Tobacco and tobacco products -- Determination of silicated residues insoluble in hydrochloric acid


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Tobacco and tobacco products. Determination of silicated residues insoluble in hydrochloric acid ICS 65.160 X85 National Standards of People's Republic of China Tobacco and tobacco products insoluble in hydrochloric acid silicate Determination of residues (ISO 2817..1999, MOD) 2007-10-16 released 2008-01-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China China National Standardization Administration released

Foreword

This standard is amended to adopt ISO 2817..1999 "Determination of silicate residues insoluble in hydrochloric acid for tobacco and tobacco products" Version). This standard is based on ISO 2817..1999 redrafted. Taking into account China's national conditions, compared with ISO 2817..1999, there are a few technical differences in this standard. These technical differences have been incorporated The text is marked with a vertical single line in the margins of the terms of the articles they cover. The technical differences and their causes are given in Appendix B. List for reference. For ease of use, compared with ISO 2817..1999, this standard made the following editorial changes. --- Remove the preface of ISO 2817..1999; --- Remove the ISO 2817..1999 reference; --- Added Appendix B "This standard and ISO 2817..1999 comparison." This standard Appendix A, Appendix B is an informative annex. This standard proposed by the State Tobacco Monopoly Bureau. This standard by the National Tobacco Standardization Technical Committee (TC144) centralized. This standard was drafted. China Tobacco Standardization Research Center, Xuzhou Cigarette Factory, Zhengzhou Tobacco Research Institute. The main drafters of this standard. Li Dong, declared spring, Wu Yang, Ding Chao, Xie Fu Wei. Tobacco and tobacco products insoluble in hydrochloric acid silicate Determination of residues

1 Scope

This standard specifies the tobacco (leaves, shredded tobacco, shredded tobacco leaves and tobacco) and tobacco products are not soluble in hydrochloric acid in silicate particles (especially Is the sand) Determination of content. This standard applies to tobacco and tobacco products insoluble in hydrochloric acid Determination of silicate particles.

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. All dated references, which are subsequently owned Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to reach an agreement based on this standard research Whether you can use the latest versions of these files. For undated references, the latest version applies to this standard. GB/T 6005 test sieve wire mesh, perforated plate and electroformed sheet sieve basic dimensions (GB/T 6005-1997, eqv ISO 565..1997) GB/T 19616 tobacco bulk samples of the general principles of sampling (GB/T 19616-2004, ISO 4874..2000, MOD) YC/T 31 Tobacco and tobacco products - Preparation and moisture determination - Oven method YC/T 165 Determination of tobacco moisture - Part 1. Karl Fischer method (YC/T 165-2003, ISO 6488-1..1997, MOD)

3 Terms and definitions

The following terms and definitions apply to this standard. 3.1 Under the conditions specified in this standard, leaves, shredded tobacco, shredded tobacco leaves or smoke ashes and hydrochloric acid leaching residue of the material.

4 principle

The sample is ashed at a temperature of 650 ° C ± 50 ° C. Ashes using hydrochloric acid leaching, the temperature of 650 ℃ ± 50 ℃ again ashed. On the residue The residue is weighed.

5 reagent

Analytical reagents are used. Water should be distilled or deionized water, or water of equal purity. Hydrochloric acid hydrochloride (HCl) = 4mol/L

6 instruments

Common laboratory equipment and the following items. 6.1 muffle furnace, placed in a well-ventilated environment, the temperature can be controlled at 350 ℃ ± 50 ℃ and 650 ℃ ± 50 ℃. 6.2 wide mouth flat bottom crucible, porcelain or platinum, the volume and size of the sample for the volume. Typically, the crucible diameter of 50mm ~ 70mm, Height of 30mm is more appropriate. 6.3 Screen, aperture 2mm (10 mesh), in line with GB/T 6005 requirements.

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