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Textiles -- Determination of the phthalate content -- Tetrahydrofuran method
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Textiles -- Determination of the content of phthalates
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Basic data
| Standard ID | GB/T 20388-2016 (GB/T20388-2016) |
| Description (Translated English) | Textiles -- Determination of the phthalate content -- Tetrahydrofuran method |
| Sector / Industry | National Standard (Recommended) |
| Classification of Chinese Standard | W04 |
| Classification of International Standard | 59.080.01 |
| Word Count Estimation | 15,118 |
| Date of Issue | 2016-04-25 |
| Date of Implementation | 2016-11-01 |
| Older Standard (superseded by this standard) | GB/T 20388-2006 |
| Regulation (derived from) | National Standard Announcement No |
| 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 |
GB/T 20388-2016: Textiles -- Determination of the phthalate content -- Tetrahydrofuran method
---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Textiles - Determination of the phthalate content - Tetrahydrofuran method
ICS 59.080.01
W04
National Standards of People's Republic of China
Replace GB/T 20388-2006
Textiles - Determination of phthalates
Tetrahydrofuran method
(ISO 14389..2014, MOD)
2016-04-25 released
2016-11-01 implementation
General Administration of Quality Supervision, Inspection and Quarantine of the People 's Republic of China
China National Standardization Management Committee released
Foreword
This standard is drafted in accordance with the rules given in GB/T 1.1-2009 and GB/T .20000.2-2009.
This standard replaces GB/T 20388-2006 "Determination of textile phthalate esters", compared with GB/T 20388-2006
The changes are as follows.
--- modified the standard name;
- adjust the type of phthalate target to be tested;
- Added Chapter 2 terms and definitions;
Pretreatment method Trichloromethane extraction method to tetrahydrofuran dissolution method;
Quantitative method from external standard method to internal standard method;
--- sample volume from 1g to 0.3g;
--- refinement of the standard stock solution and working fluid preparation;
--- modified the calculation of the results of the method, and increased the proportion of phthalates accounted for plasticized components of the formula;
- the deletion of the original standard Appendix A "13 kinds of phthalate ester type table", Appendix B "13 kinds of phthalate quantitative and
Qualitative selection of ions and determination of low-limit table "and Appendix C" phthalate standard gas chromatography-mass spectrometry selective ion color
Spectrum ";
- Added Appendix A, "Calculation of Quality of Plasticized Components in Samples", Appendix B "GC-MS Test Parameters Examples" and Appendix C "Chemistry
Method to determine the quality of PVC coating ".
This standard uses the re-drafting method to modify ISO 14389..2014 "Determination of textile phthalate tetrahydrofuran method"
The main differences with ISO 14389..2014 are as follows.
- the introduction of the introduction of international standards, preface and some references;
--- 5.6 of the pipette specifications increased by 0.5mL, 1mL;
--- an increase of 5.10 "centrifugal device";
- Added a chromatogram of the phthalate standard in Appendix B;
--- simplified information on Appendix C, the deletion of the information Appendix D;
--- Replace the ISO 1833.1 in the reference with the corresponding GB/T 2910.1.
This standard is proposed by China Textile Industry Federation.
This standard is under the jurisdiction of the National Textile Standardization Technical Committee (SAC/TC209).
The drafting unit of this standard. China Textile Standard (Beijing) Inspection and Certification Center Co., Ltd., Jilin Entry-Exit Inspection and Quarantine Bureau.
The main drafters of this standard. Si Ying, Mu Jun, Zheng Yuying, well Tingting, Li Aijun.
This standard replaced the previous version of the standard release.
--- GB/T 20388-2006.
Textiles - Determination of phthalates
Tetrahydrofuran method
WARNING. Personnel using this standard should have practical experience in formal laboratory work. This standard does not indicate all possible security issues.
It is the responsibility of the user to take appropriate safety and health measures and to ensure compliance with the conditions set forth in the relevant national regulations.
1 Scope
This standard specifies the use of tetrahydrofuran as solvent, the use of gas chromatography-mass spectrometry (GC-MS) determination of phthalates in textiles
Ester method.
This standard applies to textile products that may contain certain phthalates.
2 terms and definitions
The following terms and definitions apply to this document.
2.1
Plasticizing material or softening material plasticizedorsoftenedmaterial
After the chemical treatment of more flexible plastic materials.
Note. The chemical substances in this standard are phthalates. Examples of plastic materials. coating agents, paint printing adhesives and so on.
2.2
Whole processing of textiles overaltreatedtextile
Continuous finishing, coating or printing and dyeing of textiles.
2.3
Local processing of textiles localytreatedtextile
Non-continuous finishing, coating or printing and dyeing of textiles.
2.4
Representative sample representativespecimen
Samples obtained from different treatment sites of the sample.
3 principle
Using an ultrasonic generator in tetrahydrofuran as a solvent, dissolving the plasticized polymer in the sample in whole or in part, using a suitable solvent
(Acetonitrile, n-hexane, etc.) to precipitate the dissolved polymer and extract the phthalate. The extract was centrifuged and diluted and fixed
Determination of Phthalate by Gas Chromatography - Mass Spectrometry (GC - MS) and quantification by internal standard method.
4 reagent
Unless otherwise specified, the reagents used are of analytical grade.
4.1 tetrahydrofuran, CAS No. 109-99-9.
4.2 precipitants, for example.
...