CdS修饰玻碳电极电化学发光法检测三聚氰胺  

Electrochemiluminescence Determination of Melamine Using CdS Modified Glassy Carbon Electrode

作　　者：井伟[1,2] 李小晶[2] 吕水源[2] 许才明[2] 陈旻实[2] 江晓芬[2] 陈锦权[1] 

机构地区：[1]福建农林大学食品科学学院,福建福州350002 [2]福建出入境检验检疫局技术中心,福建福州350001

出　　处：《分析科学学报》2011年第5期607-610,共4页Journal of Analytical Science

基　　金：国家自然科学基金(No.20905013);福建省科技计划重点项目(No.2009Y0001)

摘　　要：本文将CdS纳米棒修饰到玻碳电极上制作了CdS修饰玻碳电极(CdS/GCE)并研究了其在K2S2O8溶液中的电化学发光(ECL)性能。基于三聚氰胺能淬灭CdS-K2S2O8电化学发光的性质建立了一种检测三聚氰胺的方法。在最优条件下,体系的ECL强度与三聚氰胺浓度在1.0×10-9～1.0×10-7 mol/L范围内与ECL响应值成线性关系,检出限(S/N=3)达8.0×10-10 mol/L。CdS was successfully modified on glassy carbon electrode（CdS/GCE） and the electrochemiluminescence（ECL） behavior of the modified electrode in K2S2O8 solution was studied.Melamine was found to be able to significantly quench the ECL of CdS/K2S2O8 system,based on which a highly sensitive approach for the detection of melamine was proposed.Under the optimized conditions,the logarithmic plot of the inhibited ECL versus the concentration of melamine was linear over the range of 1.0×10-9 ~1.0×10-7 mol/L.The corresponding limit of detection（LOD） was 8.0×10-10 mol/L for melamine（S/N=3）.

关 键 词：CDS纳米棒 电化学发光 三聚氰胺 

分 类 号：O657.15[理学—分析化学]