浮选-消解顺序对土壤中微塑料提取效率的影响
Effect of flotation-digestion sequence on the extraction efficiency of microplastics from soil
赵媛 1盖一丹 1聂子宜 1于艺 1甘延东1
作者信息
- 1. 曲阜师范大学生命科学学院,273165,山东省曲阜市
- 折叠
摘要
通过向实验土样中定量添加不同类型的微塑料,比较了两种浮选液(氯化锌ZnCl2和氯化钠NaCl)、浮选-消解顺序对微塑料提取效率的影响.结果表明,NaCl浮选液对PVC类高密度(ρ＞1.30 g/cm3)微塑料不能发挥浮选作用,而ZnCl2浮选液对各种密度的微塑料都能起到较好的浮选效果;不论供试土壤还是实际土壤的应用中,ZnCl2浮选液与先浮选后消解的组合展现出了较高的提取效率.本研究结论为土壤中微塑料的分离提取方法提供了科学依据.
Abstract
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.
关键词
微塑料/土壤/提取顺序/密度分离法/浮选液Key words
microplastic/soil/extraction sequence/density separation method/flotation solution引用本文复制引用
基金项目
山东省自然科学基金(ZR2021MD120)
国家级大学生创新创业训练计划(202310446061)
出版年
2024
国家科技期刊平台
NSTL
维普
万方数据