碳纳米管在固相萃取中的应用  

Applications of carbon nanotubes in the solid phase extraction

作　　者：陈冰[1,2] 蒋丽红[1] 韩熠[2] 李茜[1] 孟霞[3] 

机构地区：[1]昆明理工大学化学工程学院,云南昆明650093 [2]云南烟草科学研究院,云南昆明650106 [3]中国科学院西双版纳热带植物园,云南昆明650223

出　　处：《浙江大学学报（理学版）》2015年第1期106-115,126,共11页Journal of Zhejiang University（Science Edition）

基　　金：国家自然科学基金资助项目(21266012);昆明理工大学分析测试基金项目(20130503)

摘　　要：固相萃取技术(SPE)作为一种分析物提取和样品前处理方法,相比于传统的液液萃取更利于目标分析物的分离,提高痕量分析物的检出能力和被测物的回收率,同时减少对环境的二次污染,且操作过程简单方便,耗时较短.碳纳米管(CNTs)的独特性能使其成为非常有吸引力的SPE吸附材料.介绍了碳纳米管在农残、药品、有机化合物、无机金属离子等检测中的应用,并对碳纳米管在分析领域中的应用前景进行了展望.Solid phase extraction （SPE）：objective compounds in liquid sample were absorbed by solid adsorbent and then separeted from matrixes and other components with following steps including elution or heating in order to be enriched. As a method of analyte extraction and sample preparation, SPE is easier to operate than traditional liquid liquid extraction. It improves the extraction and enhances the limit of determination （LOD） and recovery. In addition, its operation is simple and fast with less pollution. The key of SPE is the adsorbent. An appropriate one can make the separation between objective compounds and interfering component better. Due to their unique properties which have big specific surface area, excellent π-π force, prominent chemical and mechanical properties and thermo stability, CNTs are one of the most attractive adsorbing materials for SPE. Good extraction can be obtained by using CNTs for compounds of both polarity and non polarity. The applications of carbon nanotubes in the detection of pes ticide residues, drugs, organic compounds and inorganic metal ions are introduced in this paper. Further, the prom ising applications of this kind of materials in the analytical science are prospected.

关 键 词：固相萃取技术 碳纳米管 吸附材料 分析领域 

分 类 号：O657[理学—分析化学]