Determination of Ti(IV) at low levels by voltammetry

Peak heights and peak widths at half-height in square wave voltammetry without and with ohmic potential drop for reversible and irreversible systems

“…When both redox forms are soluble in solution the peak current at a plane electrode and at the SMDE can be well approximated by the following equation [12,18]:…”

Rapid Determination of Picomolar Titanium in Seawater with Catalytic Cathodic Stripping Voltammetry

“…A DP-CSV method was developed and optimized for pH and Cupferron concentration. The DP-CSV approach was chosen, because the rejection of background currents is better in DP, compared to SW or LS . At all pHs tested, in the concentration range of 0–2 mM Cupferron, the current increased linearly to the square root of the Cupferron concentration, as expected for a catalytic mechanism (see Figure S4 in the Supporting Information).…”

“…The DP-CSV approach was chosen, because the rejection of background currents is better in DP, compared to SW or LS. 39 At all pHs tested, in the concentration range of 0À2 mM Cupferron, the current increased linearly to the square root of the Cupferron concentration, as expected for a catalytic mechanism (see Figure S4 in the Supporting Information). Calculation of the catalytic current, 40 based on this data, indicate that there was a slight decrease in the catalytic rate between pH 6.1 ((6.0 ( 1.5) Â 10 7 M À1 s À1 ) and pH 7.87 ((1.0 ( 0.6) Â 10 7 M À1 s À1 ), although it is difficult to separate out the impact of the decreasing adsorption of the TiO(Cup) 2 complex that is also clearly occurring as the pH increases.…”

Determination of trace titanium(iv) by differential pulse catalytic adsorptive stripping voltammetry at a bismuth film electrode

“…Various analytical techniques include neutron activation analysis, 3 inductively coupled plasma atomic emission spectrophotometry, 4 X-ray uorescence, 5 spectrophotometry 6 and electrochemistry method 7 have been used for the determination of titanium in different types of matrices. However, most of the reported methods suffer from the limitations, such as lack of sensitivity, tedious and time consuming extraction, or lack of selectivity.…”