Evaluation of a lifetime-based optode to measure oxygen in aquatic systems

Anders Tengberg, Jostein Hovdenes, Henrik Johan Andersson, Olivier Brocandel, Robert Diaz, David Hebert, Tony Arnerich, Christian Huber, Arne Körtzinger, Alexis Khripounoff, Francisco Rey, Christer Rönning, Jens Schimanski, Stefan Sommer,Achim Stangelmayer

Limnol. Oceanogr. Methods 4:7-17 (2006) | DOI: 10.4319/lom.2006.4.7

ABSTRACT: In this article, we evaluate the performance of a commercially available lifetime-based optode and compare it with data obtained by other methods. We performed a set of 10 different tests, including targeted laboratory evaluations and field studies, covering a wide range of situations from shallow coastal waters and wastewater treatment plants to abyssal depths. Our principal conclusion is that, owing to high accuracy (± 2 µM), long-term stability (more than 20 months), lack of pressure hysteresis, and limited cross-sensitivity, this method is overall more suitable for oxygen monitoring than other methods.