title: Electrodeposition and stripping process by long optical pathlength potential-step transmission chronoabsorptometry.
abstract: Based on the transmittance-averaged rather than absorbance-averaged model of long optical pathlength transmission spectroelectrochemistry, a reasonable theoretical model for potential-step electrodeposition and stripping process has been developed. It can accurately predict the stripping-chronoabsorptometric waveform with a peak absorbance with respect to the time rather than that with no peak but only a theoretical maximum absorbance at the initial stage of the stripping process. Cu(II) in NH(3) . H(2)ONH(4)Cl supporting electrolyte is utilized to verify the theory. With this anodic stripping spectroelectrochemical method, a detection limit of ca 0.01mM without stirring or ca 0.002mM under stirring during deposition can be achieved. An application in the analysis of copper in practical samples is presented.
authors.affiliation: Department of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P.R. China.
authors.forename: Q
authors.initials: Q
authors.lastname: Xie
authors.forename: X
authors.initials: X
authors.lastname: Cheng
authors.forename: W
authors.initials: W
authors.lastname: Wei
authors.forename: L
authors.initials: L
authors.lastname: Nie
authors.forename: S
authors.initials: S
authors.lastname: Yao