Needle-shaped microsensors (see photographs) can be used to measure spatial profiles or time-series of various physico-chemical parameters (e.g., oxygen, sulfide, pH, nitrate, NO, light spectrum, radioactivity) in sediments and biofilms with high spatial and temporal resolutions. A basic rationale of why such measurements are useful is explained here. Special microsensor systems can be used to perform such measurements in the lab or in-situ.
The measurements are automated using a dedicated suite of measurement software (e.g., m-Profiler, LINPOS-server, DAQ-server), while a rapid analysis of the data is enabled by dedicated analytical software (e.g., mprplotter, L@MP, calfluxrate, fit-profile). Below is a schematic diagram showing how these applications are interconnected.