Oxic-anoxic boundaries, effects

Various microelectrode techniques can be powerful tools for evaluating effects of microbial activities on corrosion behavior at metal surfaces. Membrane tyjje microelectrodes have been developed for measuring microprofiles of dissolved O2, N2O, H2S, and pH across the thickness of microbial mats and biofilms [101-106], These have been used successfully to determine oxygen diffusion fluxes [101,102], microbial photosynthetic and respiration rates [103], nitrogen cycling [104], and to locate the oxic/anoxic boundary [105,106]. 

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