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- E-ISSN 2288-8985
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Determination of Rhodium by Inverted Catalytic Hydrogen peak as Analytical peak
Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
2003, v.16 no.4, pp.269-276
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(2003). Determination of Rhodium by Inverted Catalytic Hydrogen peak as Analytical peak. Analytical Science and Technology, 16(4), 269-276.
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Abstract
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.
- keywords
- Inverted Catalytic Hydrogen peak rhodium
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