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SN/T 4559-2016: Textiles import and export--Determination of adipate esters--Gas chromatography-mass spectrometry method
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SN/T 4559-2016: Textiles import and export--Determination of adipate esters--Gas chromatography-mass spectrometry method

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Textiles import and export--Determination of adipate esters--Gas chromatography-mass spectrometry method China's entry-exit inspection and quarantine industry standards Determination of adipic acid in textiles for import and export Gas chromatography-mass spectrometry Published on.2016-08-23 2017-03-01 Implementation China The State Administration of Quality Supervision, Inspection and Quarantine issued

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard is proposed and managed by the National Certification and Accreditation Regulatory Commission. This standard was drafted by the People's Republic of China Xinjiang Entry-Exit Inspection and Quarantine Bureau and the People's Republic of China Shandong Entry-Exit Inspection Inspection Epidemic Bureau. The main drafters of this standard. Liu Jun, Wang Xiaoping, Liu Sicong, Zhu Xia, Ma Zengmei, Li Jiang, Niu Zengyuan, Zhang Xulong. Determination of adipic acid in textiles for import and export Gas chromatography-mass spectrometry Warnings - Persons using this document should have practical experience in regular laboratory work. This document does not indicate all possible safety issues question. It is the user's responsibility to take appropriate safety and health measures and to ensure compliance with the conditions stipulated by relevant national laws and regulations.

1 Scope

This standard specifies the method of gas chromatography-mass spectrometry to determine the content of adipic esters in textiles. This standard applies to the determination of adipic acid content in textiles.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article Pieces. For undated references, the latest edition (including the amendments used) applies to this document. GB/T 6682 Analysis Laboratory Water Specifications and Test Methods GB/T 8170 Representation and Judgment of Digital Roughness Rules and Limit Values

3 Principle

The sample was extracted by ultrasonic extraction with dichloromethane. After constant volume, the sample solution was detected by gas chromatography-mass spectrometry and determined by full-scan detection. Sex, external ion standardization with selected ions.

4 Reagents and materials

Unless otherwise specified, all reagents are of analytical grade and water is deionized water according to GB/T 6682. 4.1 Dichloromethane. Chromatographically pure. 4.2 n-hexane. chromatographic purity. 4.3 Adipic acid standards. Purity ≥98%, diethyl adipate, diisobutyl adipate, dibutyl adipate, di-2-ethyl adipate Hexyl esters and bis (2-butoxyethyl) adipate (English name, chemical abstract number and molecular formulae see Appendix A). 4.4 standard stock solution. Weigh the appropriate amount of adipic acid standard product (4.3) (accurate to 0.1mg), and make it to 1000μg/L with n-hexane. The stock solution, standard stock solution in the refrigerator at 0 °C ~ 4 °C protected from light, the standard stock solution storage period of 6 months. 4.5 Standard working solution. Take appropriate amount of standard stock solution of various adipic acid esters (4.4), dilute with dichloromethane if necessary to use for suitable mixing The standard working solution and standard working solution are stored in the refrigerator at 0°C~4°C from light. The standard working solution has a shelf life of 1 month.

5 Instruments

5.1 Gas Chromatography-Mass Spectrometer (GC-MS). Equipped with Electron Impact Ionization (EI). 5.2 Balance. The amount of sense is 0.01g. 5.3 Ultrasonic generator. 300W, operating frequency 40kHz. ...