Luminescent Sensors for Ocean Water Monitoring, Phase I

Metadata Updated: February 28, 2019

Space-based global measurements of atmospheric CO2 must be complemented with ocean water analysis. Monitoring ocean acidification, which results from the accumulation of CO2, is of critical interest, since progressive acidification is already affecting oceans and coastal estuaries and waterways. To that end, NASA and NOAA are seeking in-situ monitoring devices for oceanic and coastal water monitoring, including a pH sensor for seawater, to support space-based monitoring programs. Monitoring ocean pH accurately over large areas has proved to be extremely difficult, and classic sensor technology, based on potentiometric measurements (pH electrodes), have shown significant limitations: current instruments are expensive, do not monitor pH directly, and therefore need complex signal compensation to yield accurate measurements, and require frequent calibration. Intelligent Optical Systems proposes to develop a novel luminescent sensor for pH, taking advantage of novel materials developed to monitor pH and other parameters of interest in high salinity and elevated pressure environments; it will exhibit high selectivity (direct pH measurements) and stability. A novel antifouling technology with no mechanical parts will prevent sensor degradation in seawater. To contain the cost of the electronics while maintaining high performance in detecting the luminescent signal, we will use Circuit Seed circuits, which process analog signals on 100% digital components. This enables them to reduce size and parts count, simplifying quality control and power requirements, and will enable us to produce high-performance, low-cost optoelectronic units.

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Public: This dataset is intended for public access and use. License: U.S. Government Work

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Metadata Created Date August 1, 2018
Metadata Updated Date February 28, 2019

Metadata Source

Harvested from NASA Data.json

Additional Metadata

Resource Type Dataset
Metadata Created Date August 1, 2018
Metadata Updated Date February 28, 2019
Publisher Space Technology Mission Directorate
Unique Identifier TECHPORT_93618
Maintainer Email
Public Access Level public
Bureau Code 026:00
Metadata Context
Metadata Catalog ID
Schema Version
Catalog Describedby
Harvest Object Id 731e4b71-7809-475c-8af6-b4dd6f7ac9e2
Harvest Source Id 39e4ad2a-47ca-4507-8258-852babd0fd99
Harvest Source Title NASA Data.json
Data First Published 2017-12-01
Homepage URL
Data Last Modified 2018-07-19
Program Code 026:027
Source Datajson Identifier True
Source Hash e0fb4e66e78f5ac98c7b643fcde8690f96ff7de0
Source Schema Version 1.1

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