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GB/T 22932-2008 English PDF

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GB/T 22932-2008: Leather and fur -- Chemical tests -- Determination of organotin compounds
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GB/T 22932-2008English229 Add to Cart 3 days [Need to translate] Leather and fur -- Chemical tests -- Determination of organotin compounds Valid GB/T 22932-2008

PDF similar to GB/T 22932-2008


Standard similar to GB/T 22932-2008

GB/T 22890.1   GB/T 22889   GB/T 22930.1   GB/T 22933   

Basic data

Standard ID GB/T 22932-2008 (GB/T22932-2008)
Description (Translated English) Leather and fur -- Chemical tests -- Determination of organotin compounds
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard Y46
Classification of International Standard 59.140.30
Word Count Estimation 10,120
Date of Issue 2008-12-30
Date of Implementation 2009-09-01
Regulation (derived from) National Standard Approval Announcement 2008 No.26 (Total No.139)
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 leather, fur dibutyltin (DBT) and the determination of tributyltin (TBT) content. This standard applies to all types of leather, fur and articles thereof.

GB/T 22932-2008: Leather and fur -- Chemical tests -- Determination of organotin compounds

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Leather and fur. Chemical tests. Determination of organotin compounds ICS 59.140.30 Y46 National Standards of People's Republic of China Leather and fur - Chemical tests Determination of organotin compounds Posted 2008-12-30 2009-09-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This standard Annex A, Annex B and Annex C is informative appendix. The standard proposed by China National Light Industry Council. This standard by the National Leather Industry Standardization Technical Committee (SAC/TC252) centralized. This standard was drafted. People's Republic of China Jiaxing Exit Inspection and Quarantine, China Leather and Footwear Industry Research Institute. Drafters of this standard. Shen Bing, Zhou constricted, Zhao Liguo, Xiqi Hui, Guxu Hua. Leather and fur - Chemical tests Determination of organotin compounds

1 Scope

This standard specifies the leather, dibutyl tin (DBT) and determination of tributyltin (TBT) Content fur. This standard applies to all types of leather, fur and articles thereof.

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 3922 Textiles perspiration fastness test method (GB/T 3922-1995, eqv ISO 105-E04.1994) GB/T 6682 analytical laboratory use specifications and test methods (GB/T 6682-2008, ISO 3696. 1987, MOD) QB/T 1267 fur finished specimen parts and sign Preparation and chemical QB/T 1272 chemical analysis of samples of finished fur General Analysis Determination of QB/T 1273 finished fur volatile matter content QB/T 2706 leather chemical, physical, mechanical and color fastness test sampling site (QB/T 2706-2005, ISO 2418. 2002, MOD) QB/T 2716 Leather - Chemical tests of the sample preparation (QB/T 2716-2005, ISO 4044. 1977, MOD) Determination of QB/T 2717 Leather - Chemical tests volatiles Principle 3 Acidic sweat extracted samples, at pH = 4.0 ± 0.1 acidity to tetraethyl borohydride derivatization, n-hexane as the extraction Agent, extract dibutyl tin (DBT) and tributyltin (TBT), direct extraction derivatized. By gas chromatography - mass spectrometry (GC-MS) Determination, external standard.

4 Reagents and materials

Unless otherwise indicated in the analysis using only recognized as analytical reagents and in line with GB/T 6682 or equivalent tertiary water purity Of water. 4.1 n-hexane. 4.2 acidic sweat. preparing an acidic sweat under GB/T 3922, the test solution should be now with the current. 4.3 sodium acetate. 4.4 glacial acetic acid. 4.5 acetate buffer. 1mol/L sodium acetate solution with glacial acetic acid adjusted to pH = 4.0 ± 0.1. 4.6 tetraethyl sodium borohydride. 4.7 tetraethyl borohydride solution. Weigh 0.2g of tetraethyl borohydride (NaBEt4) (4.6) in 10mL brown volumetric flask, dissolved in water, Volume. This concentration was 20g/L (concentration). NOTE. This solution is unstable, should be using now, should be isolated as much as possible when air configuration. 4.8 Organotin standard stock solution. organotin each standard stock solution with a purity of greater than or equal to 99% of the standard substance is formulated organotin, concentrated

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