- P-ISSN 1225-0163
- E-ISSN 2288-8985
A new type of stripping voltammetry, inverted catalytic stripping voltammetry <TEX>$IC_tSV$</TEX>, is introduced. The rhodium-formaldehyde complex in hydrochloric acid gives an inverted catalytic hydrogen peak (reduction current peak during positive-going scan). The characteristics of the inverted peak were studied. By using the peak as analytical peak the detection limit of <TEX>$1.2{\times}10^{-10}M$</TEX> Rh (50s preconcentration) can be reached at the optimal conditions: 0.015% (W/V) HCHO-0.42 M HCl; accumulation potential, -1.1 V; scan rate, 100 mV/s.