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This paper reports on a microfluidic device for the flow-injection/electrochemistry analysis of nitroaromatic explosive. The response is very fast (150assays/h), highly sensitive (detection limit 7.0μgL −1 ), reproducible and stable (R.S.D.=2.0%; n=30) and linear (over 20–100μgL −1 range). Relevant experimental parameters have been optimized. The new microsystem offers great promise...
Carbon-nanotube (CNT)-modified glassy-carbon electrodes dramatically accelerate the electrooxidation of insulin to offer an attractive amperometric detection of this important hormone. Hydrodynamic voltammograms indicate a substantial lowering of the detection potential, with oxidation starting above +0.5V (versus Ag/AgCl) and leveling off of the response above +0.7V. The flow-injection amperometric...
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