Resumen
The principle of the method specified is dissolving a test portion in dimethylformamide and injecting a small volume of the solution into a gas chromatograph equipped with flame ionization detector to separate and detect the volatile components. The solvent contains a known amount of propionitrile or acetonitrile as an internal standard for quantitative evaluation. With this method, a lower detection limit of the order of 3 ppm of acrylonitrile in the copolymer may be expected. To obtain a lower detection limit of the order of 0,3 ppm to 0,4 ppm, an alternative method is specified in annex A.
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Informaciones generales
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Estado: PublicadoFecha de publicación: 1994-08Etapa: Norma Internacional confirmada [90.93]
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Edición: 2Número de páginas: 8
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Comité Técnico :ISO/TC 61/SC 9ICS :83.080.20
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Ciclo de vida
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Anteriormente
RetiradaISO 4581:1987
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Ahora
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