基于拉曼光谱检测饮用水中微塑料  

Detection of Microplastics in Drinking Water Based on Raman Spectroscopy

作　　者：王赛 张岚 陈永艳[1] 邢方潇[1] WANG Sai;ZHANG Lan;CHEN Yongyan;XING Fangxiao(National Institute of Environmental Health,Chinese Center for Disease Control and Prevention,Beijing100021,China)

机构地区：[1]中国疾病预防控制中心环境与健康相关产品安全所,北京100021

出　　处：《净水技术》2022年第3期160-166,共7页Water Purification Technology

基　　金：水体污染控制与治理科技重大专项(2018ZX07502001-001)。

摘　　要：文中基于拉曼光谱,建立饮用水中微塑料的检测方法。饮用水经不锈钢膜一级过滤,使用20%H;O;对滤膜上的物质消解24 h,经超声洗脱后使用氧化铝膜进行二级过滤,然后采用三点取样法对二级滤膜进行定性和定量分析。该方法的回收率为75.64%~121.53%,低浓度组RSD(相对标准偏差)为22.65%,中浓度组RSD为14.74%,高浓度组RSD为11.21%。该方法操作便捷、回收率较高、时间成本适宜,可适用于检测生活饮用水中的微塑料。Detection method of microplastics in drinking water was established based on Raman spectroscopy. Drinking water was first filtered by stainless steel membrane, and substances on membrane were digested by 20% H;O;for 24 h. After ultrasonic elution, alumina membrane was used for secondary filtration, and then three-point sampling method was used for qualitative and quantitative analysis of secondary membrane. Recovery rate of this method was 75.64%~121.53%, with RSD, relative standard deviation, of 22.65% in low concentration group, of 14.74% in medium concentration group and of 11.21% in high concentration group. Method has the advantages of convenient operation, high recovery rate and appropriate time and cost, and can be used to detect microplastics in drinking water.

关 键 词：饮用水 微塑料 拉曼光谱 检测方法 滤膜选择 定量方法 

分 类 号：TU991.2[建筑科学—市政工程] X832[环境科学与工程—环境工程]