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Biochemical oxygen demand (BOD) is an important index for the assessment of organic water pollution, which needs to be detected rapidly and sensitively. In this paper, a BOD biosensor has been developed based on the direct immobilization of microorganisms around carboxyl graphene (GN-COOH) modified ultramicroelectrode array (UMEA). UMEA is designed in ring shape and hexagon distribution, which shows...
The authors describe a microsensor for the determination of biochemical oxygen demand. Different from established BOD detection schemes that incorporate a film of immobilized microbes, the sensitive element of this BOD microsensor consists of magnetite-functionalized Bacillus subtilis that can be immobilized and regenerated on an ultramicroelectrode array (UMEA). Modification and regeneration are...
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