Pressurized liquid extraction (PLE) uses high pressure and temperature to perform exhaustive extraction and is one of the extraction techniques widely used for determining contaminants in environmental solid samples. However, under these conditions, compounds from the matrix are also extracted. Therefore, clean-up strategies must be often applied to remove interferences and avoid matrix effect in the subsequent determination. There are different clean-up strategies that can be used in PLE, some of which are applied during the extraction procedure and some are applied to the PLE extract. The aim of this review is to critically discuss these clean-up techniques used in PLE of abiotic environmental solid samples in the last 10 years. We provide the readers with information about the weaknesses and strengths of each strategy so they can select the most suitable clean-up technique for a specific environmental analytical problem.

加压液体萃取（PLE）使用高压和高温进行详尽的萃取，是广泛用于确定环境固体样品中污染物的萃取技术之一。但是，在这些条件下，也会从基质中提取化合物。因此，必须经常采用清除策略以消除干扰并避免在随后的确定中出现基质效应。PLE中可以使用不同的清理策略，其中一些在提取过程中应用，而另一些应用于PLE提取。这篇综述的目的是批判性地讨论最近十年来在PLE的非生物环境固体样品中使用的这些净化技术。