ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 40, Number 5
JKCSEZ 40(5)
October 20, 1996 

The phenol-sensing probe in aqueous solution was made of suitable supports containing the reagent. The portable phenol-sensing system was developed with an optical fiber, digital display, and one-chip microcomputer. The optimum analytical conditions for phenols were studied in various experimental conditions using a conventional UV-Vis. spectrometer with an optical fiber and the phenol-sensing system devised in the present study. We optimized the experimental conditions controlling the several parameters, such as the change of the reagent, the type and quantity of supports, the pH of medium, and the reaction time. The optimum analytical wavelength was 612 nm and pH was 9.2. The calibration plots had two slopes depending on the analyte concentration. One was the concentration between 1×10^-2M and 5×10^-4M and the other was between 5×10^-4M and 1×10^-5M. The detection limit was 1×10^-6M.