Title :
Determination of total phosphorus in water environment by three-dimensional double coils microelectrode chip
Author :
Qiannan Xue ; Chao Bian ; Jianhua Tong ; Jizhou Sun ; Hong Zhang ; Shanhong Xia
Author_Institution :
State Key Lab. of Transducer Technol., Inst. of Electron., Beijing, China
Abstract :
A microelectrode chip was developed for total phosphorus determination. The chip is based on a pair of electrodes with 23 μm width, 17 μm spacing, and 20μm heights, formed a three-dimensional double coils microstructure, which can increase the electric field strength between the electrodes, enhance generation - collection effect, and increase the current density. Enzyme and gold nanoparticles were modified on the working electrode surface by the method of SAMs. The three-dimensional double coils microelectrode chip achieved a high response signal and got a high sensitivity and a low detection limit.
Keywords :
current density; microelectrodes; nanoparticles; water meters; collection effect; current density; electric field strength; enhance generation; enzyme; gold nanoparticles; three-dimensional double coils microelectrode chip; total phosphorus determination; water environment; Coils; Gold; Microelectrodes; Nanoparticles; Sensitivity; Sensors;
Conference_Titel :
Sensors, 2012 IEEE
Conference_Location :
Taipei
Print_ISBN :
978-1-4577-1766-6
Electronic_ISBN :
1930-0395
DOI :
10.1109/ICSENS.2012.6411252
