ISO 4581-1994 塑料 苯乙烯/丙烯腈共聚物 剩余的丙烯腈单体含量的测定 气相色谱法

标准号：ISO 4581-1994
中文标准名称：塑料 苯乙烯/丙烯腈共聚物 剩余的丙烯腈单体含量的测定 气相色谱法
英文标准名称：Plastics - Styrene/acrylonitrile copolymers - Determination of residual acrylonitrile monomer content - Gas chromatography method
标准类型：G31
发布日期：1999/12/31 12:00:00
实施日期：1999/12/31 12:00:00
中国标准分类号：G31
国际标准分类号：83.080.20
适用范围：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.