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- W2773861743 abstract "An amperometric sulfite sensor was fabricated based on nickel hexacyanoferrate (NiHCF) electrodeposited on a layer of ordered mesoporous carbon covering on a gold electrode surface (NiHCF/OMC/Au). The prepared NiHCF/OMC/Au displayed good electrocatalytic activity towards the oxidation of sulfite. The sulfite response was determined at an optimal applied potential of 0.40 V vs Ag/AgCl in a flow injection analysis system. Under optimum conditions, the sensor has a linear response in the 2.5 μM to 50 mM sulfite concentration range and a 2.5 μM limit of detection (at an S/N ratio of 3). The electrode has a high operational stability, can be used up to 104 times (with a RSD of 5.9%), and a good electrode-to-electrode repeatability (with an RSD of < 7.0%, for n = 6). It was applied, in the flow injection mode, to analyze sulfite in vermicelli, instant noodles, noodles, and macaroni. Recoveries of spiked samples ranged of from 80 ± 1 to 108 ± 2%, and the results agreed well with the Monier-Williams AOAC official method." @default.
- W2773861743 created "2017-12-22" @default.
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- W2773861743 date "2018-01-01" @default.
- W2773861743 modified "2023-10-03" @default.
- W2773861743 title "Amperometric sensing of sulfite using a gold electrode coated with ordered mesoporous carbon modified with nickel hexacyanoferrate" @default.
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- W2773861743 doi "https://doi.org/10.1016/j.jelechem.2017.11.070" @default.
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