請用此 Handle URI 來引用此文件: http://hdl.handle.net/11455/34763
標題: Barrel plating rhodium electrode: Application to flow injection analysis of hydrazine
作者: Sue, J.W.
曾志明
Kumar, A.S.
Chung, H.H.
Zen, J.M.
關鍵字: chemically-modified electrode
ruthenium
oxide
期刊/報告no:: Electroanalysis, Volume 17, Issue 14, Page(s) 1245-1250.
摘要: We introduce here the application of barrel plating technology for mass production of disposable-type electrodes. Easy for mass production, barrel plating rhodium electrode (Rh-BPE) is for the first time demonstrated for analytical application. Hydrazine was chosen as a model analyte to elucidate the electrocatalytic and analytical ability of the Rh-BPE system in pH 7 phosphate buffer solution. Flow injection analysis (FIA) of hydrazine showed a linear calibration range of 25 - 1000 ppb with a slope and a regression coefficient of 5 nA/ppb and 0.9946, respectively. Twenty-two replicate injections of 25 ppb hydrazine showed a relative standard deviation of 3.17% indicating a detection limit (S/ N = 3) of 2.5 ppb. The system can be continuously operated for I day without any alteration in the FIA signals and is tolerable to the interference of oxalic acid, gelatine, Triton X-100, and albumin for even up to 100 times excess in concentration with respect to 400 ppb hydrazine. Since the fabrication cost of the electrode is cheap, it is thus disposable in nature. Furthermore, barrel plating technique can be extendable to other transition metals for application in many fields of research interest.
URI: http://hdl.handle.net/11455/34763
ISSN: 1040-0397
文章連結: http://dx.doi.org/10.1002/elan.200403243
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