Fiber optic chemical sensors for characterizing the carbon cycle in ocean margin regions

Technical Report · Tue Apr 13 00:00:00 EDT 1993

DOI:https://doi.org/10.2172/6887154· OSTI ID:6887154

DeGrandpre, M D; Sayles, F L

The overall objective of our DOE-Ocean Margins Programs grant is to develop a pCO[sub 2] sensor for long-term monitoring of pCO[sub 2] in the ocean margins and to establish a proving ground for the development of other chemical sensors for characterizing the carbon cycle in these regions. We have succeeded in keeping with the approximate timeline outlined in the original proposal, which, for year 1 included the following objectives: Continue sensor optimization, test response characteristics (reagent and sample flow rates, temperature), introduce position sensitive photodiode and photodiode array spectrophotometers and evaluate, develop reliable and reproducible fabrication techniques, develop sensor based on preliminary studies optimized for field measurements (minimize size and power requirements), test long-term stability of the sensor in the laboratory, determine susceptibility to fouling and corrosion. This work is summarized below along with a brief review of the sensor's operating principle.

• Research Organization: Woods Hole Oceanographic Institution, MA (United States). Dept. of Marine Chemistry and Geochemistry
• Sponsoring Organization: USDOE; USDOE, Washington, DC (United States)
• DOE Contract Number: FG02-92ER61437
• OSTI ID: 6887154
• Report Number(s): DOE/ER/61437-1; ON: DE93011442
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
CARBON DIOXIDE
MONITORING
CONTINENTAL MARGIN
CARBON CYCLE
DIFFUSION BARRIERS
FIBER OPTICS
GASEOUS DIFFUSION
MONITORS
PACIFIC OCEAN
PROGRESS REPORT
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
DIFFUSION
DOCUMENT TYPES
MEASURING INSTRUMENTS
OXIDES
OXYGEN COMPOUNDS
SEAS
SURFACE WATERS
540320* - Environment
Aquatic- Chemicals Monitoring & Transport- (1990-)