An efficient fiber fluorescence probe for the detection of trace elements  

作　　者：华莉 郜洪云 黎敏 孙恩杰 

机构地区：[1]Department of Physics, Wuhan University of Technology [2]Department of Chemistry, Wuhan University of Technology

出　　处：《Optoelectronics Letters》2013年第2期139-142,共4页光电子快报（英文版）

基　　金：supported by the National Natural Science Foundation of China (No.61177076);the Fundamental Research Funds for the Central Universities (No.2010-Ia-020);the Self-Determined and Innovative Research Funds of WUT (No.2012-Va-104)

摘　　要：A high-efficiency capillary-fiber optic probe is developed for measuring the concentration of trace elements. The optimal probe consists of an excitation fiber (incident fiber) and a ring of collection fibers which is made up of 6 fibers. Both simulation and experiment results show that the structure gives the higher coupling efficiency with a reasonable capillary diameter. The coupling efficiency of the probe is determined by the number and arrangement of the fibers, internal diameter and length of the fiber optic sensing probe, and the end reflectivity of the capillary. The concentra-tion of the carbonic anhydrase solution and dezincification reagents also affect the efficiency. A fluorescence efficiency of 2.4% is obtained in zinc detection experiment.A high-efficiency capillary-fiber optic probe is developed for measuring the concentration of trace elements. The op- timal probe consists of an excitation fiber （incident fiber） and a ring of collection fibers which is made up of 6 fibers. Both simulation and experiment results show that the structure gives the higher coupling efficiency with a reasonable capillary diameter. The coupling efficiency of the probe is determined by the number and arrangement of the fibers, internal diameter and length of the fiber optic sensing probe, and the end reflectivity of the capillary. The concentra- tion of the carbonic anhydrase solution and dezincification reagents also affect the efficiency. A fluorescence effi- ciency of 2.4% is obtained in zinc detection experiment.

关 键 词：光纤探头 微量元素检测 荧光探针 耦合效率 试剂浓度 检测实验 痕量元素 毛细血管 

分 类 号：TN253[电子电信—物理电子学]