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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...
In this paper, reduced carboxylic graphene/palladium nanoparticles (rGN-COOH/PdNPs) modified ultramicroelectrode array (UMEA) was investigated and applied in electrochemical determination of biochemical oxygen demand (BOD). The UMEAs were fabricated by micro electro-mechanical system technique. The sensitive film of rGN-COOH/PdNPs was prepared by self-assembling of carboxylic graphene (GN-COOH), electroreducing...
This paper presents the design of a novel microelectromechanical system (MEMS)-based total phosphorus (TP) microsensor with a microdigestion system. Cobalt metal film is introduced as the sensing material of the microelectrodes, and a micro digestion bioreactor is used as the microdigestion unit. The sensing mechanism of the cobalt electrodes to the concentration of phosphate ions is demonstrated...
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