Analytical aspects of absorption spectroelectrochemistry at a platinum electrode—II Quantitative basis and study of organic compounds☆

High-sensitivity spectroelectrochemistry based on electrochemical modulation of an absorbing analyte

“…Spectroelectrochemical techniques have been very useful for kinetic and thermodynamic studies, but their application to analysis has been inhibited by poor sensitivity. Several approaches have been used to improve sensitivity, some of which are based on parallel geometry (11,12), where the optical beam passes parallel to the electrode surface rather than normal to it. Thin-layer cells have been constructed with path lengths of ca.…”

Spectroscopy takes electrochemistry beyond the interface: A compact analytical solution for the reversible first-order catalytic mechanism

“…In the parallel-beam configuration, the absorptometric response of species i is calculated as [8,9,23]:…”

“…With the coupling of spectroscopic techniques, the species involved or affected by the charge transfer during the electrical perturbation can be monitored with the aim of identifying their chemical nature and the reaction pathways [1][2][3][4][5]. Also, the spectroelectrochemical (SEC) signal can provide quantitative information about the mass transport and the (electro)chemical kinetics and thermodynamics on the basis of suitable theoretical treatments [6][7][8][9][10] that describe accurately the concentration profile of the light absorbing species.…”

Fiber Optic Spectroelectrochemical Sensing forin situDetermination of Metal Ions

“…The first report by West involved preliminary studies on the determination of electrogenerated hydrated metal "atoms" via atomic absorbance and fluorescence spectrometry. [3] More specific demonstrations of the general analytical utility of SEC for metal ions [4] and organic compounds [5] were subsequently reported by Tyson and West. In these studies, and in a later report by Tyson [6] that included preliminary results for anodic stripping SEC, a bulk electrochemical cell was employed that permitted parallel or grazing angle sampling of solution adjacent to a planar working electrode.…”