Path: Home > SN/T > Page19 > SN/T 4068-2014

Price & Delivery

US$239.00 · In stock · Download in 9 seconds
SN/T 4068-2014: Food contact materials - Regenerated cellulose film - Determination of solvent residue in coating - Headspace-gas chromatography-mass spectrometry
Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure
Status: Valid

Std ID	Version	USD	Buy	Deliver [PDF] in	Title (Description)
SN/T 4068-2014	English	239	Add to Cart	3 days [Need to translate]	Food contact materials - Regenerated cellulose film - Determination of solvent residue in coating - Headspace-gas chromatography-mass spectrometry

SN/T 4068-2014: Food contact materials - Regenerated cellulose film - Determination of solvent residue in coating - Headspace-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.
(Food contact materials regenerated cellulose film material coating solvent residue determination Headspace - Gas Chromatography/Mass Spectrometry) People's Republic of China Entry-Exit Inspection and Quarantine Standards Food contact materials regenerated cellulose film material Determination of the amount of residual solvent coatings Headspace - Gas Chromatography/Mass Spectrometry Issued on. 2014-11-19 2015-05-01 implementation People's Republic of China The State Administration of Quality Supervision, Inspection and Quarantine released

Foreword

This standard was drafted in accordance with GB/T 1.1-2009 given rules. This standard is proposed and managed by the National Certification and Accreditation Administration Committee. This standard was drafted. People's Republic of China Guangdong CIQ. The main drafters of this standard. Li Dan, Xu Zhiqin, Zhuo Jin snow, Wangyun Yu, ZHOU Ming-hui, Liu Yingfeng, Shaw ago, Di Cuiping, Zheng Jianguo. Food contact materials regenerated cellulose film material Determination of the amount of residual solvent coatings Headspace - Gas Chromatography/Mass Spectrometry

1 Scope

This standard specifies the regenerated cellulose film coating material headspace solvent residues - gas chromatography/mass spectrometry. This standard applies to the coating and the regenerated cellulose film food contact materials 18 Determination of residual solvents. 18 kinds of solvents English name and CAS number in Appendix A. Principle 2 Headspace - Gas Chromatography/Mass Spectrometry The samples were measured. Based on the retention time of each object and the qualitative spectrum, external standard method Quantified.

3 Reagents

3.1 glycerol triacetate. AR, purity ≥99.5%. 3.2 ethyl acetate, propyl acetate, isopropyl acetate, butyl acetate, isobutyl acetate, ethanol, n-propanol, isopropanol, n-butanol, 2-butanol, Acetone, butanone (methyl ethyl ketone), methyl isobutyl ketone, tetrahydrofuran, toluene, cyclohexane, ethylene glycol butyl ether, ethylene glycol butyl ether acetate. Standard, Purity ≥99%. 3.3 standard stock solution. Weigh accurately respectively standard 1g (accurate to 0.1mg), set 25mL volumetric flask, dilute with glycerol triacetate Diluted to the mark, shake well. The stock solution of each component concentration 40000mg/L. 3.4 standard solution. A standard stock solution was diluted with glycerol triacetate 2 times, 5 times, 10 times, 20 times, with a stock standard solution From constituting a group concentrations were 2000mg/L, 4000mg/L, 8000mg/L, 20000mg/L, 40000mg/L standard work For solution series.

4 instruments and equipment

4.1 Gas chromatography - mass spectrometry (GC-MS). with electron impact ionization (EI). 4.2 Empty autosampler with 20mL headspace vial. 4.3 Balance. a sense of the amount of 0.1mg. Step 5 Analysis 5.1 sample preparation 100cm2 take a representative sample as the sample, cut into 1cm × 2cm strip of debris the size of the bottle into the headspace (as far as possible And the bottom was vertical, make a note stand the bottle). With micro-injector to the inner wall of the bottle was added 10μL triacetate (to avoid sample ...