微塑料通常是指粒径在 5 mm 以下的塑料颗粒,广泛存在于海洋、河流、湖泊、土壤、沉积物等环境介质中。由于其尺寸小、难降解,微塑料被生物摄食后,会通过生物累积和食物链生物放大效应对生态系统甚至人类健康造成危害。目前,虽然对环境中微塑料的分离提取有多种方法,但是这些方法需要对微塑料颗粒逐一分析,过程耗时费力,并且无法得到微塑料的质量浓度。因此,利用DSC多种塑料混合物测定的补充、快速分析很有必要。
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