A new nitrate continuous observation sensor for autonomous sub-surface applications: Technical design and first results

Author

Zielinski, Oliver ; Fiedler, Bjorn ; Heuermann, Rtidiger ; Kortzinger, Arne ; Kopiske, Eberhard ; Meinecke, Gerrit ; Munderloh, Karin

Author_Institution

Univ. of Appl. Sci., Bremerhaven

fYear

2007

fDate

18-21 June 2007

Firstpage

1

Lastpage

4

Abstract

Nitrate as one of the chemical parameters of major interest in marine biogeochemistry is detectable by means of its optical absorption in the ultra violet spectrum, given appropriate algorithms to correct for other seawater constituents. The presented work outlines the potential and technical requirements to adopt this new instrumentation in autonomous sub-surface applications. First results from laboratory experiment as well as from a flow-through application onboard RV POSEIDON cruise P347 in the North Atlantic are used to characterize the sensitivity of the method. Having long term deployment in mind, different antifouling strategies are reviewed and evaluated in the context of an optical sensor.

Keywords

chemical sensors; chemical variables measurement; nitrogen compounds; oceanographic techniques; oceanography; optical sensors; seawater; North Atlantic Ocean; RV POSEIDON cruise P347; autonomous subsurface application; chemical parameter; instrumentation; marine biogeochemistry; nitrate continuous observation sensor; optical absorption; optical sensor; seawater constituent; ultraviolet spectrum; Biomedical optical imaging; Chemicals; Instruments; Laboratories; Oceans; Optical sensors; Optical variables control; Photodiodes; Sea measurements; Spectroscopy; Bio-optics; Nitrates; Sea water analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

OCEANS 2007 - Europe

Conference_Location

Aberdeen

Print_ISBN

978-1-4244-0635-7

Electronic_ISBN

978-1-4244-0635-7

Type

conf

DOI

10.1109/OCEANSE.2007.4302300

Filename

4302300