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The use of metallized carbon transducers results in remarkably selective amperometric biosensors. Such focus on the transducer eliminates major electroactive interferences in the first place, and hence circumvents the need for anti-interference layers. The remarkable selectivity of metal-dispersed carbons is attributed to their strong, preferential, electrocatalytic action towards the detection...
A novel approach for enhancing the selectivity of amperometric flow-injection systems is described. This strategy relies on the use of coated electrodes to induce longer residence times for the target analyte (within the detector) compared to the interfering species. Selective measurements of the analyte are thus performed on the tailing edge of its peak, after passage of the interfering species...
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