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GB/T 29677-2013 English PDF

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GB/T 29677-2013: Determination of nitromethane in cosmetics -- Gas chromatography-mass spectrometry
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PDF similar to GB/T 29677-2013


Standard similar to GB/T 29677-2013

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Basic data

Standard ID GB/T 29677-2013 (GB/T29677-2013)
Description (Translated English) Determination of nitromethane in cosmetics -- Gas chromatography-mass spectrometry
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard Y42
Classification of International Standard 71.100.70
Word Count Estimation 8,882
Regulation (derived from) National Standards Bulletin 2013 No. 17
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: cosmetics nitro methane gas chromatography mass spectrometry. This standard applies to: liquid, loose powder, shampoo, spray, lipstick cosmetics in nitro methane determination. The standard for nitrate methane a detection limit of

GB/T 29677-2013: Determination of nitromethane in cosmetics -- Gas chromatography-mass spectrometry


---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.
Determination of nitromethane in cosmetics.Gas chromatography-mass spectrometry ICS 71.100.70 Y42 National Standards of People's Republic of China Determination of nitro methane in cosmetics Gas chromatography - mass spectrometry Issued on. 2013-09-06 2014-02-15 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This standard was drafted in accordance with GB/T 1.1-2009 given rules. Please note that some of the content of this document may involve patents. Release mechanism of the present document does not assume responsibility for the identification of these patents. The standard proposed by China National Light Industry Council. This standard by the National Standardization Technical Committee of Fragrance Flavor and Cosmetic (SAC/TC257) centralized. This standard was drafted. China Inspection and Quarantine Science Research Institute, Shanghai Institute of Daily Chemical Industry. The main drafters of this standard. Li Niimi, Wang Chao, Liu Qian, Ma Qiang, Yang Haifeng, Wang Hongwei, Lihai Yu Yang Mei-hong, Wu Xiao Jian, Kang Wei. Determination of nitro methane in cosmetics Gas chromatography - mass spectrometry

1 Scope

This standard specifies the cosmetics nitro methane gas chromatography - mass spectrometry. This standard applies to liquid, measuring methane loose powder, shampoo, spray, lipstick Cosmetics nitrate. The standard for nitrate methane detection limit of 0.1mg/kg, the limit of quantification of 0.2mg/kg. Principle 2 By solvent extraction of the sample, after centrifugation, solid phase extraction (SPE), gas chromatography - mass spectrometry, external standard.

3 Reagents and materials

Unless otherwise specified, the reagents were of analytical grade. 3.1 dichloromethane. chromatography. 3.2 Methanol. chromatographically pure. 3.3 ethanol. chromatography. 3.4 nitro methane standard substance. Formula CH3NO2, CAS No. 75-52-5, purity of not less than 99%, see Appendix A of the structural formula Figure A.1. 3.5 anhydrous sodium sulfate. After 650 ℃ burning 4h placed in the dryer. 3.6 nitro methane standard stock solution. accurately weighed amount nitro methane standard substance (accurate to 0.0001g), dichloromethane (3.1) formulated A concentration of 1000μg/mL standard stock solution, and stored in the dark at 4 ℃, can be used for three months. 3.7 15% -85% methanol in methylene chloride mixed solution. accurate amount of 15mL of methanol and 85mL of methylene chloride, mix and reserve. 3.8 80% -20% methanol in methylene chloride mixed solution. accurate amount of 80mL of methanol and 20mL of dichloromethane, after mixing spare.

4 instruments and equipment

4.1 Gas chromatography - mass spectrometry (GC-MS) instrument. with electron impact ionization (EI). 4.2 Analysis of balance. a sense of the amount of 0.0001g and 0.001g. 4.3 centrifuge. speed of not less than 5000r/min. 4.4 ultrasonic bath. 4.5 Solid phase extraction device. 4.6 nitrogen blowing instrument. 4.7 rotary evaporator. 4.8 heart-shaped bottle. 50mL. 4.9 stoppered conical flask. 50mL. 4.10 plug teflon tube. 50mL.

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