✦ LIBER ✦

Catalytic effect of rhodium(III) on the chemiluminescence of luminol in reverse micelles and its analytical application

✍ Scribed by Imdadullah; Terufumi Fujiwara; Takahiro Kumamaru

Publisher: Elsevier Science
Year: 1994
Tongue: English
Weight: 590 KB
Volume: 292
Category: Article
ISSN: 0003-2670
DOI: 10.1016/0003-2670(94)00025-5

No coin nor oath required. For personal study only.

✦ Synopsis

Even in the absence of potassium periodate, rhodium(II1) caused an increase in the chemiluminescence (CL) of luminol both in conventional aqueous basic buffer solution and in a reverse micellar medium of cetyltrimethylammonium chloride in chloroform-cyclohexane 65, v/v)-water (buffered with sodium carbonate). The CL emission intensity was observed to decrease significantly when oxygen was excluded from the reaction. The rhodium(III)-catalyzed CL emission from luminol oxidation by oxy en in a reverse micellar medium can be used for analytical purposes. Under the optimized experimental conditi 2 ns, the present emission was applied to determine rhodium(II1) in chloroform using a flow-injection system. A detection limit of 50 ng ml-' Rh(II1) and a linear calibration graph was obtained with a dynamic range from 0.40 pg ml-' to 10 pg ml-'.

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