SC1.7/BG2.45/SSS13.80Current techniques to measure and analyse redox potentials in wetland soils and sediments (co-organized)
|Convener: Michel Vorenhout|
Mon, 09 Apr, 13:30–15:00
This short course aims to give insight into current techniques for in situ measurement of reduction-oxidation potentials in soils and sediments. It gives an overview of techniques for field and laboratory situations, and discusses viable methods for interpretation of the obtained time series.
No previous experience is required to follow this course.
1. Redox potential: what is it?
* Values and classes
* Standardization to H2 and possibly with pH
* Limitations of the data, with a focus of possible links to concentrations of ion pairs and O2
2. Measurement technique: electrochemical
* Probe requirements
* Measurement devices: what are critical properties?
* Manual measurements: the good and the bad
* Automated measurements: the good and the bad
* What is actually required in the field?
* How to correctly install probes
* Location of reference probe(s)
* Cable lengths, disturbances etc.
4. Interpretation of data
* Interpretation of variation in redox potential
* Useful data crunching
* Scaling up in space and time
Data submission encouraged.
Examples used in this course are derived from the work of M Vorenhout. Participants however are encouraged to submit their own datasets, including description of used technique and research objective. These datasets will be implemented as examples throughout the course. Submit your series at least two weeks before the course starts by e-mail.