Chemistry Letters p. 1173 - 1176 (1980)
Update date:2022-08-11
Topics:
Nakano, Shigenori
Enoki, Hitomi
Kawashima, Takuji
A new sensitive catalytic method for the determination of copper(II) is proposed.In the presence of hydrogen peroxide, copper(II) catalyzes the oxidation of p-hydrazinobenzenesulfonic acid to p-sulfobenzenediazonium ion, which is coupled with m-phenylenediamine to form a yellow azo dye (λmax = 454 nm).By means of this catalytic reaction, nanogram amounts of copper(II) can be determined easily.
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