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1. (WO2017156258) OPTICAL NITRATE SENSOR COMPENSATION ALGORITHMS FOR MULTIPARAMETER WATER QUALITY MONITORING

Pub. No.:    WO/2017/156258    International Application No.:    PCT/US2017/021555
Publication Date: Fri Sep 15 01:59:59 CEST 2017 International Filing Date: Fri Mar 10 00:59:59 CET 2017
IPC: G01J 1/42
G01N 21/59
Applicants: YSI, INC.
Inventors: PALASSIS, Christopher, John
POON, Melanie, C., K.
Title: OPTICAL NITRATE SENSOR COMPENSATION ALGORITHMS FOR MULTIPARAMETER WATER QUALITY MONITORING
Abstract:
An optical nitrate sensor features a signal processor or signal processing module configured to: receive signaling containing information about a concentration of nitrate dissolved in the water based upon a first UV optical absorbance of light centered at 229nm, and also containing information about a dissolved organic matter (DOM) sensed in the water based upon a second UV optical absorbance of associated light centered in a range of 250nm to 275nm; and determine corresponding signaling containing information about a corrected concentration of nitrate dissolved in the water by compensating the concentration of nitrate for the DOM sensed in the water, based upon the signaling received.