- 作者: 張慶弘 ; 劉春櫻
- 作者服務機構: 台灣大學化學系
- 中文摘要: A chemically modified electrode (CME) containing salicylaldehyde thiosemicarbazone (TSCsal) was evaluated for the ability to preconcentrate copper(II) prior to quantification by voltammetry. The CME has been used for the very sensitive and selective analysis of trace amounts of copper(II). A detection limit of 0.1ppb was obtained by applying anodic stripping voltammetry with a flow system. The parameters that affect the sensitivity and possible interference by other ions or chelating agents have been examined in detail. The CME exhibits high stability and the response could be reproduced for four preconcentration- determination-renewal cycles [ 10ppb Cu(II) ] with a 2.87% relative standard deviation. The proposed method has been applied to the determination of copper(II) in tap water, drinking water, and NASS-3 standard reference sea water samples. The results gave satisfactory recoveries.
- 英文摘要: --
- 中文關鍵字: Chemical Modified Electrode; Anodic Stripping Voltammetry; Flow System; Copper; Salicylaldehyde Thiosemicarbazone
- 英文關鍵字: 化學修飾電極;陽極剝蝕伏安法;流動系統;銅