不同批次再生聚乙烯塑料中重金属的含量状况探究

Investigation on heavy metal content in different batches of recycled polyethylene plastics

伴随着我国工业现代化的发展,我国逐步进入塑料废弃物增长的高峰期,而塑料的再生利用成为了当今的热题,由于塑料再生加工过程中产生有毒有害物质,因此对人类和环境构成威胁。以微波消解为前处理方法,对不同批次再生塑料中重金属的含量进行研究,探究出重金属含量最低的可再生塑料。该方法前处理中再生塑料用量少,微波消解完全,适用于再生塑料中有毒有害物质的快速测定。

With the development of industrial modernization, China has gradually entered the peak period of the growth of plastic waste, and the recycling of plastic has become a hot topic nowadays. Because of the toxic and harmful substances in the process of plastic recycling, it poses a threat to human beings and the environment. In this paper, microwave digestion was used as pretreatment method to study the content of heavy metals in plastics from different recycled batches. The recycled plastics with the lowest heaw metal content were explored. The method is suitable for rapid determination of toxic and harmful substances in recycled plastics due to its low dosage of recycled plastics and complete microwave digestion.