T. Imdadullah,"fujiwara et T. Kumamaru, CATALYTIC EFFECT OF RHODIUM(III) ON THE CHEMILUMINESCENCE OF LUMINOL IN REVERSE MICELLES AND ITS ANALYTICAL APPLICATION, Analytica chimica acta, 292(1-2), 1994, pp. 151-157
Even in the absence of potassium periodate, rhodium(III) caused an inc
rease in the chemiluminescence (CL) of luminol both in conventional aq
ueous basic buffer solution and in a reverse micellar medium of cetylt
rimethylammonium chloride in chloroform-cyclohexane (6:5, v/v)-water (
buffered with sodium carbonate). The CL emission intensity was observe
d to decrease significantly when oxygen was excluded from the reaction
. The rhodium(III)-catalyzed CL emission from luminol oxidation by oxy
gen in a reverse micellar medium can be used for analytical purposes.
Under the optimized experimental conditions, the present emission was
applied to determine rhodium(III) in chloroform using a flow-injection
system. A detection limit of 50 ng ml(-1) Rh(III) and a linear calibr
ation graph was obtained with a dynamic range from 0.40 mu g ml(-1) to
10 mu g ml(-1).