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Determination of Rhodium by Differential Pulse Polarography
Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
2000, v.13 no.1, pp.1-4
Kwon,
Y., Hong,
M., &
Czae,
M.
(2000). Determination of Rhodium by Differential Pulse Polarography. Analytical Science and Technology, 13(1), 1-4.
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Abstract
Determination of trace rhodium, based on catalytic reduction of protons by the adsorbed Rhformaldehyde complexes formed in formaldehyde-hydrochloric acid medium, was demonstrated. The condition for the measurements of Rh at trace levels was 0.004%(w/v) formaldehyde-0.75M hydrochloric acid. In this medium detection limit was <TEX>$7.0{\times}10^{-12}M$</TEX> and the linear dynamic range was <TEX>$1.0{\times}10^{-11}{\sim}1.0{\times}10^{-8}M$</TEX> Rh. There were no interferences from other platinum group metal ions even in the presence of a 500-fold excess.
- keywords
- Rhodium, Differential Pulse Polarography
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