Search result: SN/T 4751-2017
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Determination of parachlorometaxylenol in import and export textiles. Gas chromatography-mass spectrometry
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SN/T 4751-2017
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| Standard ID | SN/T 4751-2017 (SN/T4751-2017) | | Description (Translated English) | Determination of parachlorometaxylenol in import and export textiles. Gas chromatography-mass spectrometry | | Sector / Industry | Commodity Inspection Standard (Recommended) | | Classification of Chinese Standard | W55 | | Word Count Estimation | 6,619 | | Date of Issue | 2017-05-12 | | Date of Implementation | 2017-12-01 | | Regulation (derived from) | National Quality Inspection (2017) 228 |
SN/T 4751-2017
(Textiles - Import - export textiles - Determination of xylenol - Gas chromatographic - mass spectrometry)
People's Republic of China entry and exit inspection and quarantine industry standards
Determination of Chloro-xylenol in Import and Export Textiles
Gas chromatography-mass spectrometry
Released on.2017-05-12
2017-12-01 implementation
People's Republic
The General Administration of Quality Supervision, Inspection and Quarantine issued
Entry-Exit Inspection and Quarantine
Industry Standard
Determination of Chloro-xylenol in Import and Export Textiles
Gas chromatography-mass spectrometry
China Standard Press Publishing
First edition, May.2018
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 Administration.
This standard was drafted. Jiangsu Entry-Exit Inspection and Quarantine Bureau of the People's Republic of China.
The main drafters of this standard. Gu Juanhong, Xu Zhendong, Pan Kui, Zhu Zhenhua, Liu Yan.
Determination of Chloro-xylenol in Import and Export Textiles
Gas chromatography-mass spectrometry
Caution - Personnel using this standard should have practical experience in formal laboratory work. This standard does not indicate all possible security questions.
question. It is the responsibility of the user to take appropriate safety and health measures and to ensure compliance with the conditions set by the relevant national regulations.
1 Scope
This standard specifies the method for the determination of p-chloro-xylenol in textiles by gas chromatography-mass spectrometry.
This standard applies to the determination of the content of p-chloro-xylenol in textiles.
2 Normative references
The following documents are indispensable for the application of this document. For dated references, only the dated version applies to this article.
Pieces. For undated references, the latest edition (including all amendments) applies to this document.
GB/T 8170 Numerical Rounding Rules and Representation and Determination of Limit Values
3 Principle
The textile sample was extracted by ultrasonic wave with absolute ethanol, and the volume of the extract was determined by gas chromatography-mass spectrometry (GC-MS).
Quantitative.
4 reagents and materials
The reagents used in the analysis were of analytical grade unless otherwise stated.
4.1 Anhydrous ethanol.
4.2 p-chloro-xylenol. CAS number. 88-04-0, purity ≥ 99.0%.
4.3 p-Chloryl dimethyl phenol standard stock solution (1000mg/L). accurately weigh the appropriate amount of p-chloro-xylenol (4.2) standard, with absolute ethanol
Or other suitable solvent is formulated into a standard stock solution of 1000 mg/L.
Note. The standard stock solution is stored at -18 ° C in the dark and is valid for 12 months.
4.4 p-Chlo-xylenol standard working solution. Transfer the standard stock solution (4.3) to the appropriate volume, dilute with absolute ethanol or other suitable solvent
Release, formulated into the standard working solution of the desired concentration. Now available.
5 Instruments and equipment
5.1 Gas Chromatography-Mass Spectrometry (GC-MS). equipped with an electron bombardment source (EI).
5.2 Balance. The sensitivity is 0.01g and 0.1mg.
5.3 Ultrasonic cleaner. Operating frequency 40kHz.
5.4 Extractor. Tubular, with a closed plug, about 50mL, made of hard glass.
5.5 Filter. Organic phase needle (0.45 μm).
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