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Updated: Feb 8, 2026

Cerebral Blood Oxygenation Measurement Based on Oxygen-dependent Quenching of Phosphorescence
Published on: May 4, 2011
Liquid-Phase Measurements of Photosynthetic Oxygen Evolution
Dmitriy Shevela1, Wolfgang P Schröder2, Johannes Messinger3,4
1Department of Chemistry, Umeå University, Umeå, Sweden. dmitry.shevela@umu.se.
Abstract:
This chapter compares two different techniques for monitoring photosynthetic O2 production: the widespread Clark-type O2 electrode and the more sophisticated membrane inlet mass spectrometry (MIMS) technique. We describe how a simple membrane inlet for MIMS can be made out of a commercial Clark-type cell, and outline the advantages and drawbacks of the two techniques to guide researchers in deciding which method to use. Protocols and examples are given for measuring O2 evolution rates and for determining the number of chlorophyll molecules per active photosystem II reaction center.
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