TY - JOUR
T1 - Investigation of a fibre optic copper sensor based on immobilised α-benzoinoxime (cupron)
AU - Mahendra, Nikita
AU - Gangaiya, Philomena
AU - Sotheeswaran, Subramaniam
AU - Narayanaswamy, Ramaier
N1 - Times Cited: 22 6th European Conference on Optical Chemical Sensors and Biosensors (Europt(r)ode VI) Apr 07-10, 2002 Manchester, england
PY - 2003/4/20
Y1 - 2003/4/20
N2 - α-Benzoinoxime, a highly selective reagent used for the gravimetric and colorimetric determination of copper, was successfully immobilised on XAD-2 and coupled with optical fibres to investigate a sensor-based approach for determining copper. Reflectance measurements were used to quantify sensor response. Optimum response was obtained at a wavelength of 560nm and at a solution pH of 7. Using a kinetic approach in which the rate of change of reflectance is measured over a 4-min period, the response was found to be linear in the range 5-127ppm. After measurement, the sensor can be regenerated for reuse by immersing the probe in 0.1M HCl. With continuous use, the sensing layer was found to be stable for at least 3 days. The advantages of using α-benzoinoxime in this way are compared with its use in the traditional gravimetric and colorimetric way. © 2003 Elsevier Science B.V. All rights reserved.
AB - α-Benzoinoxime, a highly selective reagent used for the gravimetric and colorimetric determination of copper, was successfully immobilised on XAD-2 and coupled with optical fibres to investigate a sensor-based approach for determining copper. Reflectance measurements were used to quantify sensor response. Optimum response was obtained at a wavelength of 560nm and at a solution pH of 7. Using a kinetic approach in which the rate of change of reflectance is measured over a 4-min period, the response was found to be linear in the range 5-127ppm. After measurement, the sensor can be regenerated for reuse by immersing the probe in 0.1M HCl. With continuous use, the sensing layer was found to be stable for at least 3 days. The advantages of using α-benzoinoxime in this way are compared with its use in the traditional gravimetric and colorimetric way. © 2003 Elsevier Science B.V. All rights reserved.
KW - α-Benzoinoxime
KW - Cupron
KW - Fibre optic copper sensor
U2 - 10.1016/S0925-4005(03)00044-3
DO - 10.1016/S0925-4005(03)00044-3
M3 - Article
SN - 0925-4005
VL - 90
SP - 118
EP - 123
JO - Sensors and Actuators B: Chemical: international journal devoted to research and development of physical and chemical transducers
JF - Sensors and Actuators B: Chemical: international journal devoted to research and development of physical and chemical transducers
IS - 1-3
ER -