Effect of flotation-digestion sequence on the extraction efficiency of microplastics from soil
By adding different types of microplastics quantitatively to the experimental soil samples,we compared the effects of two flotation solutions(zinc chloride and sodium chloride)and the flotation-diges-tion sequence on the extraction efficiency of microplastics.The results show that NaCl flotation solution cannot extract PVC microplastics with heavy density(ρ＞1.30 g/cm3),while ZnCl2 flotation solution can play a better floating effect on microplastics of all densities;The combination of ZnCl2 flotation solution and flotation followed by digestion indicate high extraction efficiency in both test soil and actual soil appli-cations.The conclusion of this study provides a scientific basis for the separation and extraction method of microplastics from the soil.
国家科技期刊平台
NSTL
万方数据
维普
