1 March 1991 Flow optrodes for chemical analysis
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Proceedings Volume 1368, Chemical, Biochemical, and Environmental Fiber Sensors II; (1991) https://doi.org/10.1117/12.24776
Event: SPIE Microelectronic Interconnect and Integrated Processing Symposium, 1990, San Jose, United States
We have recently demonstrated the use of renewable reagent fiber optic sensors in a harsh sample matrix and with multiple reagent chemistries. Sodium hydroxide concentrations ranging from 1. 5-23. 0 (w/w) (0. 38-7. 2 M) were measured with a single probe chemistry. A sensor for free and total chlorine has been developed in which the reagents were sequentially switched to make the sensor responsive to either free chlorine (N 1 4-phenylene-diamine (DPD) + phosphate buffer) or both free and combined chlorine (DPD + phosphate buffer + KI). The detection limit of free chlorine was 0. 05 mgfL Cl2 at a reagent flow rate of4 j. tLtmin and covering a dynamic range of 0. 05-25 mg/L Cl2. Improvements in sensor fabrication techniques are currently being investigated in order to increase overall sensor functionality.
© (1991) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Richard J. Berman, Richard J. Berman, Lloyd W. Burgess, Lloyd W. Burgess, } "Flow optrodes for chemical analysis", Proc. SPIE 1368, Chemical, Biochemical, and Environmental Fiber Sensors II, (1 March 1991); doi: 10.1117/12.24776; https://doi.org/10.1117/12.24776

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