GB/T 5009.152-2003 Translated English of Chinese Standard. (GBT 5009.152-2003, GB/T5009.152-2003, GBT5009.152-2003): Determination of residual acrylonitrile monomer in styrene-acrylonitrile copolymers and rubber-modified acrylonitrile-butadiene-styrene resins and their products used for food packaginghttps://www.chinesestandard.net, 2016 M03 27 - 13 páginas This Standard specifies the method for determination of residual acrylonitrile monomer in acrylonitrile - styrene copolymers (AS) and acrylonitrile-butadienestyrene copolymers (ABS) by headspace gas chromatography (HP-GC). |
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according to equation Acrylonitrile standard add N,N-dimethylformamide aluminum cap analytical reagent analyzed within 24h Calculate PN concentration concentration in solution Detector method NPD determination of residual dilute constant volume dilute to scale draw headspace Epidemic Prevention Station exceeds 24h Flame Ionization Detector flow rate gas nitrogen N2 Gas speed Carrier gasket and aluminum headspace bottle headspace determination bottle headspace in quantification Health and Epidemic Immediately seal inject gas chromatograph integral counting internal standard substance Ionization Detector Method known amount method FID mg/kg milligrams mg milligrams per milliliter milliliter mg/mL mL flask mL headspace mL of solution mL/min monomer in styrene-acrylonitrile N,N-dimethylformamide to dilute peak height PN concentration mg/mL PN peak area polymer Propionitrile PN purity quantification to conduct report the storage residual acrylonitrile monomer rubber-modified acrylonitrile-butadiene-styrene resins Sample mass sealing bottle second method solvent 3.2 speed Carrier gas Standard curve stock solution syringe Take 1.0 mL vapor-liquid equilibrium