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SN/T 3225.2-2012: Textiles. Determination of triclosan. Part 2: Gas chromatography method
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SN/T 3225.2-2012: Textiles. Determination of triclosan. Part 2: Gas chromatography method

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Textiles.Determination of triclosan.Part 2. Gas chromatography method People's Republic of China Entry-Exit Inspection and Quarantine Standards Textiles - Determination of triclosan Part 2. Gas Chromatography Part 2. Gaschromatographymethod Issued on. 2012-10-23 2013-05-01 implementation People's Republic of China The State Administration of Quality Supervision, Inspection and Quarantine released

Foreword

SN/T 3225 "Determination of triclosan Textiles" is divided into four parts. --- Part 1. High performance liquid chromatography; --- Part 2. gas chromatography; --- Part 3. Gas chromatography - mass spectrometry; --- Part 4. Gas chromatography/tandem mass spectrometry. This section SN/T 3225 Part 2. This section drafted in accordance with GB/T 1.1-2009 given rules. This section proposed and managed by the National Certification and Accreditation Administration Committee. This section was drafted by. People's Republic of China, Shenzhen CIQ, Shenzhen Inspection and Quarantine Science Research Institute, the Chinese people Republic Jilin CIQ. The main drafters of this section. Asia Zhang, Xie handsome, bell Yang, Wang Chengyun, Wang new Liucai Ming, Li Lixia, Chunai Qing, CRITICAL, En Chung. Textiles - Determination of triclosan Part 2. Gas Chromatography Warning. Use SN/T 3225 this part of the staff should have regular experience of laboratory work. This section does not indicate all available Energy security issues. Users have the responsibility to take appropriate safety and health practices and to ensure compliance with relevant national regulations condition.

1 Scope

SN/T 3225 provisions of this section by gas chromatography method textiles triclosan. This section applies to the determination of textile materials and products triclosan. Principle 2 Sample ultrasonic extraction with chloroform, the extract was concentrated and after treatment, transferred to a solution of sodium tetraborate, acetic anhydride, after acetylation, positive Hexane extraction, use with electron capture detector of gas chromatograph, external standard.

3 Reagents and materials

Unless otherwise stated, use only recognized as analytical reagents. Water is in line with two water GB/T 6682 regulations. 3.1 chloroform. 3.2 Methanol. chromatographically pure. 3.3 hexane. chromatographically pure. 3.4 acetic anhydride. purity ≥98.5%. 3.5 sodium tetraborate solution. concentration of 0.1mol/L, weighed 38.1g sodium tetraborate, dissolved in water, dilute to 1000mL. 3.6 Standard. triclosan, CASN o.3380-34-5, purity > 99.5%. 3.7 standard stock solution. accurately weighed amount of standard (3.6), formulated with methanol (3.2) to a concentration of 1000mg/L of triclosan standard Stock solution. 3.8 standard solution. Standard stock solution Pipette an appropriate volume (3.7), stepwise diluted with methanol (3.2), formulated as required as required Standard working solution concentration. NOTE. The standard stock solution at 0 ℃ ~ 4 ℃ stored in a refrigerator for a period of six months. Standard working solution at 0 ℃ ~ 4 ℃ stored in a refrigerator for a period of 3 months.

4 Instrument

4.1 Gas chromatograph. equipped with electron capture detector (ECD). 4.2 rotary evaporator. 4.3 ultrasonic generator. 4.4 Oscillator. do horizontal ring oscillator frequency of 50 times/min ~ 150 times/min. 4.5 nitrogen blowing instrument. ...