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
rated during melt processing of PET. Thus, it becomes trapped in the sidewalls of a molded article and desorbs slowly into the contents packaged therein. In some foods and beverages AA can impart an off-taste that is undesirable, thus, it is important to know its concentration in PET articles that are to be used in food contact applications.
The desorption conditions of 150 C for 60 min are such that no measurable AA is generated by the sample during the desorption process.
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