Oxygen Profiles in Salty Crust
Needle sensors used for profiles in salt crusts.
Needle sensors (pH, H2S, oxygen) have been successfully applied to measure profiles in salt crusts in the Read Sea in Israel (Dr. Don Canfield and Ketil Sørensen, University of Southern Denmark).
Since the crust was impossible to penetrate without breaking the needle sensor, a pre-drilled hole was used for measurements of the profiles.
First a hole was made in the water covered gypsum crust with a syringe needle, then the equilibrium was allowed to settle in the pore water that filled up the hole and then profiles were measured with the needle sensors.
The graph below shows an oxygen profile measured in the crust showing two distinct photosynthetic zones of bacteria (the green and the purple).
Related productsOxygen Microsensor
Sørensen,K.B. et al (2004), Salinity Responses of Benthic Microbial Communities in a Solar Saltern (Eilat, Israel), Appl.Environ.Microbiol., 1608 - 1616, vol. 70 Read abstract
Sørensen,K. et al (2009), Distribution of benthic phototrophs, sulfate reducers, and methanogens in two adjacent saltern evaporation ponds in Eilat, Israel, Aquatic Microbial Ecology, - , vol. Read abstract
Canfield,D. et al (2004), Biogeochemistry of a gypsum-encrusted microbial ecosystem, Geobiology, 133 - 150, vol. 2 Read abstract
- Selected Applications
- » The Winning Formula
- » Sediment profiling analysis
- » Microbial Ecology
- » Gut Microbiology
- » Microbiology
- » Photosynthetic biofilms
- » Measuring in Rhizosphere
- » Benthic Microbial Mats
- » Oxygen Profiles in Salty Crust
- » MicroRespiration
- » NanoRespiration
- » Photosynthesis of corals
- » Neuron Activity and Tissue Oxygenation In The Brain
- » Brain Oxygen Measurements
- » Cell Culture Profiling
- » H2 measurements in mice
- » Biomedical implications of H2 enriched drinking water
- » Biofilm - Oxygen and redox potential in P. aeruginosa
- » Biofilm - O2 and N2O microprofiles in samples from CF patients
- » Small Volume Measurement
- » In situ H2S Production
- » Nitrogen removal in wastewater
- » Wastewater