摘要
探究微塑料(MPs)的粒径、含量以及接触时间对土壤中重金属镉(Cd)吸附和解吸的影响。结果表明:MPs与土壤接触时间为120 min时,基本达到饱和吸附。MPs的粒径越小,土壤吸附能力越强。当MPs含量为10.0%(粒径1 mm),土壤对Cd的吸附能力下降,饱和吸附量降至1 314.54 mg/kg。SEM分析表明:MPs土壤与Cd的吸附作用力是强度较弱的物理吸附。
The effects of particle size,content and contact time of microplastics(MPs) on adsorption and desorption of cadmium(Cd) in soil were investigated.The results show that when the contact time between MPs and soil is 120 min,the saturated adsorption is basically achieved.The smaller the particle size of MPs,the stronger the soil adsorption capacity.When the content of MPs is 10.0%(particle size 1 mm),the adsorption capacity of soil for Cd decreases,and the saturated adsorption capacity decreases to 1 314.54 mg/kg.SEM analysis show that the adsorption force between MPs soil and Cd is weak physical adsorption.
作者
马兴娟
费发源
MA Xing-juan;FEI Fa-yuan(Qinghai Province Nuclear Industry Testing Center,Qinghai Province Institute of Nuclear Geology,Xining 810016,China)
出处
《塑料科技》
CAS
北大核心
2022年第4期73-76,共4页
Plastics Science and Technology
关键词
微塑料
吸附
解吸
镉
Microplastics
Adsorption
Desorption
Cadmium
