Title :
Bio-optoelectronical “tongue” for detection of pesticide contamination of water
Author :
Nikitin, Petr ; Kabashin, Andrey ; Ksenevich, Tatiana ; Kalabina, Nadezhda
Author_Institution :
Gen. Phys. Inst., Acad. of Sci., Moscow, Russia
Abstract :
The Surface Plasmon Resonance (SPR) interferometric technique is proposed for bio- and chemical sensor systems. The method is based on interferometric detection of phase shifts of the reflected light, caused by a change of the refractive index Δn of the tested media under SPR conditions. The sensitivity threshold of the method to Δn is estimated as 4·10-8. The SPR-interferometer in conjunction with thin recognition films has been tested to detect the pesticide contamination of water. The SPR-interferometer combined with a multi-channel cell with various binding films was used to design an optoelectronic “tongue” for simultaneous multi- component analysis of liquids
Keywords :
biosensors; calibration; chemical analysis; image recognition; light interferometry; refractive index; surface plasmons; water pollution measurement; H2O; binding films; biooptoelectronic tongue; chemical sensor; interferometric detection; multichannel cell; pesticide contamination; phase shifts; reflected light; refractive index; simultaneous multicomponent analysis; surface plasmon resonance interferometry; thin recognition films; water; Chemical sensors; Contamination; Optical films; Optical interferometry; Phase detection; Phase shifting interferometry; Plasmons; Refractive index; Resonance; Testing;
Conference_Titel :
Solid State Sensors and Actuators, 1997. TRANSDUCERS '97 Chicago., 1997 International Conference on
Conference_Location :
Chicago, IL
Print_ISBN :
0-7803-3829-4
DOI :
10.1109/SENSOR.1997.613695
