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標題: Sensitive and Simple Flow Injection Analysis of Formaldehyde Using an Activated Barrel Plating Nickel Electrode
作者: Chen, P.Y.
Yang, H.H.
Zen, J.M.
Shih, Y.
關鍵字: performance liquid-chromatography;electrocatalytic oxidation;trace;formaldehyde;voltammetric determination;derivatization;nanoparticles;dehydrogenase;deamination;composite;aldehydes
Project: Journal of Aoac International
期刊/報告no:: Journal of Aoac International, Volume 94, Issue 5, Page(s) 1585-1591.
A flow injection analysis coupled with electrochemical detection at an activated barrel plating nickel electrode (Ni-BPE) was developed as a sensitive, simple, and low-cost formaldehyde sensor. The mechanism of Ni-BPE toward the electrocatalytic oxidation of formaldehyde in alkaline medium at ambient temperature was proposed to be based on the electrocatalytic oxidation of formaldehyde by Ni(III)iO(OH) species. Under the optimized conditions (flow rate = 1.2 mL/min; detection potential = +0.5 V versus Ag/AgCl), a good linearity in the window of 0.037 to 10 mu g/mL formaldehyde was observed, and the LOD of 0.23 mu g/L was calculated. The RSDs of intraday (n = 10) and interday (n = 6) replicate measurements of 0.185-5 mu g/mL formaldehyde ranged from 1.45 to 3.60%, indicating good reproducibility of the proposed method. The proposed method was successfully applied to the determination of formaldehyde in commercial nail polish samples and a drinking water sample.
ISSN: 1060-3271
DOI: 10.5740/jaoacint.10-378
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