ASTM F2013用自动静态顶部空间取样设备和带火焰电离检测器的毛细管GC测定聚乙烯对苯二甲酸酯瓶装聚合物中残留乙醛的标准试验方法
日期:2012-02-08 13:50
t method covers a gas chromatographic procedure for the determination of the ppm residual acetaldehyde (AA) present in poly(ethylene terephthalate) (PET) homo-polymers and co-polymers which are used in the manufacture of beverage bottles. This includes sample types of both amorphous and solid-stated pellet and preform samples, as opposed to the bottle test, Test Method D4509, an acetaldehyde test requiring 24 h of desorption time at 23C into the bottle headspace and then the concentration of the
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09/12 23:54