Chemiluminescence Determination of Cyanide Ions

Autor:	A. V. Gavrilov, K. I. Zakharov, I. A. Pushkin, V. A. Ishutin, A. A. Druzhinin, S. A. Nemkov
Rok vydání:	2005
Předmět:	Cyanide Inorganic chemistry Kinetics chemistry.chemical_element Oxygen Analytical Chemistry Ion Luminol Catalysis law.invention chemistry.chemical_compound chemistry law Hemin Chemiluminescence
Zdroj:	Journal of Analytical Chemistry. 60:1029-1034
ISSN:	1608-3199 1061-9348
DOI:	10.1007/s10809-005-0232-5
Popis:	It was found that alkaline solutions of luminol exhibit chemiluminescence in the presence of p-nitrobenzaldehyde (p-NBA), hemin, and cyanide ions. Air oxygen dissolved in the solutions is an essential component of the process. The kinetics of luminol chemiluminescence in the presence of p-NBA, hemin, and cyanide ions indicates the catalytic nature of the process. A scheme was proposed for the series of reactions resulting in chemiluminescence and generated by superoxide radicals formed in the p-NBA-catalyzed reaction between hemin-activated air oxygen and hydrated p-NBA species. A procedure was developed with a determination limit of (1.0 ± 0.3) × 10−7 mg/mL (n = 5, P = 0.95) for cyanide ions.
Databáze:	OpenAIRE
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