家用净水器对饮用水中微塑料净化效率的研究  

Research on the Purification Efficiency of Microplastics in Drinking Water UsingHousehold Water Purifiers

作　　者：李宁 庄棪 朱南 葛冰洋 王丹 徐力智 仝大伟 LI Ning;ZHUANG Yan;ZHU Nan;GE Bingyang;WANG Dan;XU Lizhi;TONG Dawei(Nanjing Institute of Product Quality Inspection(Nanjing Institute of Quality Development and Advanced Technology Application),Nanjing 210009,China)

机构地区：[1]南京市产品质量监督检验院(南京市质量发展与先进技术应用研究院),江苏南京210009

出　　处：《现代食品》2024年第7期144-148,共5页Modern Food

基　　金：南京市市场监督管理局2023年度科技项目(Kj2023009)。

摘　　要：通过搭建微塑料净化效率试验装置,采用微塑料显色、红外光谱表征的定性方法以及颗粒计数的定量方法,探究了不同家用净水器对饮用水中不同粒径微塑料的去除效能。结果表明,微滤净水器(PP棉芯)、超滤净水器以及反渗透净水器对13μm以上的塑料微粒都具有良好的去除效能,去除率> 99.9%;前置过滤器的去除效能取决于其过滤精度,当微塑料粒径小于前置过滤器的滤网孔径时,过滤效果较差,去除率只有3.7%。微塑料颗粒对水的pH值和电导率值基本没有影响,但对水的浑浊度有较大影响。By constructing a microplastic purification efficiency testing device and using qualitative methods such as microplastic color development and infrared spectroscopy characterization,as well as quantitative methods such as particle counting,the removal efficiency of different household water purifiers on microplastics with different particle sizes in drinking water was investigated.The results show that microfiltration water purifiers(PP cotton core),ultrafiltration water purifiers,and reverse osmosis water purifiers have good removal efficiency on 13μm microplastic,with a removal rate exceeds 99.9%;the removal efficiency of the pre filter depends on its filtration accuracy.When the particle size of microplastics is smaller than the pore size of the pre filter,the filtration effect is poor,with a removal rate of only 3.7%.Microplastic particles have no effect on the pH value and conductivity value of the water,but have a greater effect on the turbidity of the water.

关 键 词：净水器 微塑料 净化效率 

分 类 号：R123.1[医药卫生—环境卫生学]