An instrument capable of detecting the kind of non-equilibrium concentrations of reduced iron and manganese, along with the oxides of nitrogen and sulfur, which are strongly indicative of life processes on Earth. Miniature redox sensors have recently been developed that are capable of withstanding high pressure liquid environments. It is thought that arrays of such sensors could form part of the instrumentation on a probe to search for life in Lake Vostok and, eventually, in oceans that might exist on Jupiter's moons Europa and Callisto.
Related categories• ANALYTICAL CHEMISTRY
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