Method for separating micro-plastics in soil

The invention discloses a method for separating micro-plastics in soil, and belongs to the technical field of micro-plastic separation. The method comprises the following steps: S1 preparing a soil sample; S2 carrying out vibration; S3 carrying out digestion; 4 carrying out flotation, and adding flotation liquid for ultrasonic dispersion; S5 carrying out centrifuging; S6 carrying out filtering; S7 carrying out secondary centrifugation; and S8 carrying out microscopic examination analysis. The method is easy to operate, oscillation treatment is carried out before digestion, ultrasonic treatment is carried out in the flotation process, the separation time is effectively shortened, the separation efficiency is improved, the operation process is simple, the cost is low, researchers can operate the method conveniently, and good practicability is achieved. 本发明公开一种分离土壤中微塑料的方法，属于微塑料分离技术领域，其包括以下步骤：S1：土样制备；S2：震荡；S3：消解；S4：浮选：加入浮选液进行超声分散；S 5：离心；S6：过滤；S7：二次离心；S8：镜检分析。本发明操作简单，在消解前进行震荡处理，在浮选过程中进行超声处理，有效缩短分离时间，提高分离效率，且上述操作流程