二氧化硅纳米粒子荧光探针对Cu^(2+)的探测  

The Detection of Cu^(2+) by Silica Nano-Particle Fluorescent Probe

作　　者：方国[1] 高大明[2] 

机构地区：[1]北京化工大学,北京102617 [2]合肥学院,合肥230601

出　　处：《北京石油化工学院学报》2010年第4期10-12,共3页Journal of Beijing Institute of Petrochemical Technology

摘　　要：铜离子是造成环境污染的重金属之一,如何检测出超低浓度的铜离子是人们一直关心的课题。合成了一种新型的纳米粒子荧光探针,利用荧光光谱法比较了Cd2+、Co2+、Ni2+、Pb2+、Mg2+、Zn2+、Ca2+、Cu2+对该纳米粒子荧光探针的荧光淬灭效应。结果表明,该纳米粒子荧光探针对Cu2+具有很敏感的检测作用,其检测浓度达到1.0×10-11mol/L。Copper（Ⅱ） is one of the heavy metal causes of the environmental pollution,how to detect ultra low concentration of copper ions has become a problem people always care.In our work a new kind of nano-particle fluorescent probe has been synthesized,and the fluorescence quenching effect of metal ions Cd2＋,Co2＋,Ni2＋,Pb2＋,Mg2＋,Zn2＋,Ca2＋,Cu2＋ on the nano-particle fluorescence probes were studied by fluorescence spectroscopy.The results show that the synthesized nano-particle fluorescent probe has very sensitive detection effect for Cu2＋,its lowest detection concentration can reach 1.0 ×10-11mol/L.

关 键 词：荧光淬灭 纳米探针 铜离子 

分 类 号：O644[理学—物理化学]