Department Surface Waters - Research and Management

Aquatic in-situ sensors

Context

Recent achievements in ion selective electrodes’ design have led to improved signal stability and selectivity. The detection limits can reach the nanomolar range. Besides, the development of solid-state sensors allows the miniaturization which promises to improve temporal and spatial resolution. These electrodes have mainly been used in controlled laboratory conditions. In our project we investigate the use of these sensors for in-situ monitoring of lakes.

Approaches

Potentiometric and chronopotentiometric electrodes as well as optodes will be adapted and employed in stratified lakes using a custom-made submersible in situ profiling system.