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Food contact materials. Polymers determination of styrene monomer. Gas chromatography
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Standard similar to SN/T 3547-2013 SN/T 5268 | Basic data | Standard ID | SN/T 3547-2013 (SN/T3547-2013) | | Description (Translated English) | Food contact materials. Polymers determination of styrene monomer. Gas chromatography | | Sector / Industry | Commodity Inspection Standard (Recommended) | | Word Count Estimation | 7,777 | | Regulation (derived from) | AQSIQ notification issued in 2013 on the first batch of 179 entry-exit inspection and quarantine of industry standards; industry standard for filing Notice No. 1 of 2014 (No. 169 overall) | | Issuing agency(ies) | General Administration of Customs | | Summary | This standard specifies the gas chromatographic method of residual styrene monomer in polystyrene. This standard applies to the determination of residual styrene polystyrene products monomers. The method detection limit of residual styrene monomer 10mg/kg | SN/T 3547-2013: Food contact materials. Polymers determination of styrene monomer. Gas chromatography
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Food contact materials. Polymers determination of styrene monomer. Gas chromatography
People's Republic of China Entry-Exit Inspection and Quarantine Standards
Food contact materials - Polymer
Gas chromatography styrene monomer
Issued on. 2013-03-01
2013-09-16 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 Liaoning Province Exit Inspection and Quarantine.
The main drafters of this standard. in a vast, Zhaoxue Rong, Xu Wei, Li Jun, Liu Shoujiang, Chen Wei.
Food contact materials - Polymer
Gas chromatography styrene monomer
1 Scope
This standard specifies the gas chromatographic method of residual styrene monomer in polystyrene.
This standard applies to polystyrene products Determination of residual styrene monomer.
The method of residual styrene monomer detection limit of 10mg/kg.
2 Method summary
With N, N- dimethylacetamide sample was dissolved by adding a precipitating agent in an amount of methanol to dissolve the sample, so that after precipitation of the polymer
Wide, and separated from the styrene monomer, and the supernatant was analyzed quantitatively flame ionization detector, standard method.
3 Reagents and materials
Unless otherwise stated, chromatography pure reagents were used.
3.1 styrene standards, purity of greater than 99.0%.
3.2 undecane, purity greater than 99.0%.
3.3 N, N- dimethylacetamide, AR.
3.4 methanol.
3.5 Internal standard solution. Accurately weigh an internal standard n-undecane (3.2) 100mg (accurate to 0.1mg) to 100mL volumetric flask (4.3), and with
A small amount of N, N- dimethylacetamide (3.3) dissolved constant volume to 100mL, stopper tightly and shake. This solution was 1000mg/L internal standard
Solution.
3.6 styrene standard stock solution. in 100mL volumetric flask (4.3) first added N, N- dimethylacetamide (3.3) 90mL, and then accurately
Styrene standard (3.1) 100mg (accurate to 0.1mg), with N, N- dimethylacetamide (3.3) constant volume, shake. This solution is
1000mg/L standard stock solution of styrene. Dilution of the above should be carried out at room temperature, the temperature does not exceed 25 ℃. The standard stock
Incubated at 4 ℃ preservation, can be placed one month.
3.7 styrene standard solution. in five 50mL volumetric flask (4.3) were added 0.5mL, 2.5mL, 5mL, 7.5mL,
10mL styrene stock standard solution (3.6), then were added to 5mL internal standard solution (3.5), with N, N- dimethylacetamide (3.3) set
The volume to 50mL, formulated in concentrations of 10mg/L, 50mg/L, 100mg/L, 150mg/L, 200mg/L of styrene standard operating
As a solution (internal standard, the contents of each of n-undecane 100mg/L). Standard working solution should be formulated days. The above process of dilution should be at room temperature
, At a temperature not exceeding 25 ℃.
4 Instrument
4.1 Gas chromatograph. with automatic micro-injector, splitless inlet and flame ionization detector.
4.2 Analysis of balance. a sense of the amount of 0.1mg.
4.3 plug glass flask. 50mL, 100mL.
4.4 pipette.
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