痕量分析中容器的选择与洗涤

在痕量分析中,为获得准确的分析结果,容量材质以及洗涤方法的选择至关重要。试验分析表明:聚乙烯是较好的容器材料,它玷污最小、易洗涤、价廉、容器清洗。经实验证明:蒸汽法效果好,但需要相应装置;浸泡法简单易行,但消耗较大。其他方法则各有利弊,因此可根据不同的分析元素及特征,选择合适的洗涤方法。

Selection and Washing-up of Container during the Trace Analysis

During the trace analysis, selection of container material and washing-up method is very critical for getting accurate analysis result. The result of experiment shows that polyethylene is a good material of container, with less pollutant left, easy to be washed-up and cheap price. The experiment of container washing-up shows that vapourization method is good, but relevant equipment is needed; marinate method is simple and easy to adopt, but consumption is bigger. Other methods have both advantages and disadvantages. Therefore, appropriate washing-up methods can be selected in accordance with different analysis element and feature.