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一、前言聚胺酯泡沫塑料是一种用途广泛的新型材料,为在原子能事业中应用,必须对其所含的杂质量建立常规的质量鉴测。为此,研究了七种金属元素的测定,并拟定了一个操作简便的测定方法:称取一定重量的样品于铂坩埚中,经炭化、高温灼烧后,将样品残渣处理成溶液,最后采用溶液干渣法进行光谱测定。方法回收率为102～130%,精密度为±30%以下,能够满足常规测定的要求;同时也可适用于聚胺酯泡沫塑料的主要原料(丙三醇聚醚、多苯基多次甲基多异氰酸脂)中微量金属元素的测定。
First, the foreword Polyurethane foam is a widely used new material, for the application in the nuclear energy industry, it must contain the amount of impurities contained in the establishment of conventional quality testing. Therefore, the determination of seven metal elements was studied and an easy-to-measure method was developed: a sample of a certain weight was weighed in a platinum crucible, carbonized and burned at high temperature, the sample residue was treated as a solution, finally Solution dry slag spectrometry. The recovery of the method was 102-130% with the precision of ± 30% or less, which can meet the requirements of routine determination. It is also suitable for the main raw materials of polyurethane foam (glycerol polyether, polyphenyl polymethylene Isocyanates) - Determination of trace metal elements.