Jj. Gooding et al., NOVEL FLOW-INJECTION CHANNEL FLOW CELL FOR THE INVESTIGATION OF PROCESSES AT SOLID-LIQUID INTERFACES .1. THEORY, JOURNAL OF PHYSICAL CHEMISTRY B, 101(2), 1997, pp. 175-181
A novel ''flow injection'' channel flow cell is described which enable
s transient phenomena at the solid-liquid interface to be investigated
. In the cell the solution reactant is injected into the main channel
of a flow cell upstream from, and through the opposite wall from, the
solid substrate. A detector electrode is positioned downstream of the
latter so that current-time transients can be used to infer the kineti
cs and mechanism of processes at the solid-liquid interface. The perfo
rmance of the cell was theoretically modeled using FLOTRAN. It was sho
wn that the ''injection'' of reactant causes only very minor disturban
ce to the main channel flow. This facilitates the assumption of Poiseu
ille flow in the channel so as to enable the numerical interpretation
of the current-time transients.