title: Enhanced fluorescence of terbium with thiabendazole and application in determining trace amounts of terbium and thiabendazole.
abstract: In this paper, a simple, rapid and sensitive fluorescence method based on the formation of terbium (Tb3+) complex has been developed for the rapid detection of Tb3+in water. The fluorescence sensor has been studied by using terbium complexed with thiabendazole (TBZ) while acetonitrile (MeCN) as solvent. The complex was made up of TBZ as small-molecule ligand and Tb3+as central ion. Fluorescence spectroscopy and UV spectroscopy together were used to study the behavior of the complexation of TBZ-Tb in this medium. Enhancement fluorescence was observed due to the efficient energy transfer process from TBZ to Tb3+. And the affecting factors of the enhancement fluorescence were also studied in detail. Under optimal conditions, a linear relationship was obtained between the enhanced fluorescence intensity and the concentration of Tb3+in a range of 5.0×10-6M-3.0×10-5M. The sensor was used for the detection of Tb3+in river water samples, and the result was satisfactory. In the meantime, a linear relationship was also obtained between the enhanced fluorescence intensity and the concentration of TBZ in a range of 8.0×10-6M-4.0×10-5M. Moreover, the method was successfully extended for the detection of TBZ in juice samples.
authors.affiliation: Ministry of Education Key Laboratory of Analysis and Detection for Food Safety, Fujian Provincial Key Laboratory of Analysis and Detection for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, Fujian 350002, China; Environmental monitoring center of Fujian province, Fuzhou, Fujian 350003, China.
authors.forename: Qiang
authors.initials: Q
authors.lastname: Chen
authors.affiliation: Ministry of Education Key Laboratory of Analysis and Detection for Food Safety, Fujian Provincial Key Laboratory of Analysis and Detection for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, Fujian 350002, China.
authors.forename: Junfeng
authors.initials: J
authors.lastname: Zuo
authors.affiliation: Ministry of Education Key Laboratory of Analysis and Detection for Food Safety, Fujian Provincial Key Laboratory of Analysis and Detection for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, Fujian 350002, China.
authors.forename: Xue
authors.initials: X
authors.lastname: He
authors.affiliation: Environmental monitoring center of Fujian province, Fuzhou, Fujian 350003, China.
authors.forename: Xiujuan
authors.initials: X
authors.lastname: Mo
authors.affiliation: Ministry of Education Key Laboratory of Analysis and Detection for Food Safety, Fujian Provincial Key Laboratory of Analysis and Detection for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, Fujian 350002, China; Testing Center, The Sport Science Research Center, Fuzhou University, Fuzhou, Fujian 350002, China. Electronic address: tping@fzu.edu.cn.
authors.forename: Ping
authors.initials: P
authors.lastname: Tong
authors.affiliation: Ministry of Education Key Laboratory of Analysis and Detection for Food Safety, Fujian Provincial Key Laboratory of Analysis and Detection for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, Fujian 350002, China; Testing Center, The Sport Science Research Center, Fuzhou University, Fuzhou, Fujian 350002, China. Electronic address: zlan@fzu.edu.cn.
authors.forename: Lan
authors.initials: L
authors.lastname: Zhang
keywords: Fluorescence enhancement; Terbium; Thiabendazole