A ratiometric luminescence intensity imaging approach is presented, which enables spatial O2 measurements in biofilm reactors with transparent planar O2 optodes. Optodes consist of an O2 sensitive luminescent dye immobilized in a 1-10 μm thick polymeric layer on a transparent carrier, e.g. a glass window. The method is based on sequential imaging of the O2 dependent luminescence intensity, whic...

Abstract. Ocean gliders can provide high-spatial- and temporal-resolution data target specific ocean regions at a low cost compared to ship-based measurements. An important gap, however, given the need for carbon measurements, is lack of capable sensors glider-based CO2 We develop robust methods evaluate novel gliders. Here we present results from testing performance optode sensor (Atamanchuk e...