纳米复合材料吸附剂用于水中痕量金属的测定  

Determination of nanocomposites adsorbent materials and trace metals in water

作　　者：张耀华 杜立君 ZHANG Yaohua;TU Lijun(Shandong Province Weifang Ecological Environment Monitoring Center,Weifang 261041,Shandong China)

机构地区：[1]山东省潍坊生态环境监测中心,山东潍坊261041

出　　处：《粘接》2024年第2期73-76,共4页Adhesion

基　　金：华夏文化促进会素质教育委员会“十四五”规划课题(项目编号:HXJKY1469)。

摘　　要：为实现地质勘查水体中痕量金属元素的同时检测,建立基于氧化石墨烯/氧化多壁碳纳米管(GO/MWCNTs)吸附剂的分散固相微萃取程序同时测定水中痕量金属的方法,并对方法的检测性能进行研究。结果表明,用GO与MWCNTs比例为1∶5制备的GO/MWCNTs复合材料作为吸附剂,水样pH值为8、水样体积为60 mL,搅拌时间为5 min的条件下进行分散固相微萃取,此时对水中痕量重金属吸附回收率超过95%;通过XRF对萃取后的材料进行检测,金属元素在荧光图谱中显示的较为明显,且谱线间相互不干扰。In order to realize the simultaneous detection of trace polymetallic elements in water by geological exploration,a method for the simultaneous determination of trace metals in water by dispersed solid-phase microextraction program based on graphene oxide/oxidized multi-walled carbon nanotube(GO/MWCNTs)adsorbents was established,and the detection performance of the method was studied.The experimental results showed that the GO/MWCNTs composite material prepared with the ratio of GO to MWCNTs 1∶5 was used as adsorbent,the water sample pH was 8,the water sample volume was 60 mL,and the stirring time was 5 min,and the adsorption recovery of trace heavy metals in water was more than 95%.The extracted film was detected by XRF,and the metal elements were obvious in the fluorescence spectrum,and the spectral lines did not interfere with each other.

关 键 词：痕量金属测定 X射线荧光光谱 分散固相微萃取 氧化石墨烯吸附剂 

分 类 号：TQ031[化学工程]