Kinetic determination of ultramicro amounts of As(III) in solution | Zendy

Aleksandar R. Igov | Zendy; Ranko Simonović | Zendy; Rangel Igov | Zendy

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Kinetic determination of ultramicro amounts of As(III) in solution

Author(s) -

Aleksandar R. Igov,

Ranko Simonović,

Rangel Igov

Publication year - 2003

Publication title -

journal of the serbian chemical society

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.227

H-Index - 45

eISSN - 1820-7421

pISSN - 0352-5139

DOI - 10.2298/jsc0302131i

Subject(s) - selectivity , ethylenediamine , hydrochloric acid , chemistry , catalysis , kinetic energy , inorganic chemistry , ion , organic chemistry , physics , quantum mechanics

A new catalytic reaction is proposed and a kinetic method developed for the determination of ultramicro amounts of As(III) on the basis of its catalytic activity in the oxidation of ethylenediamine-N,N'-diacetic-N,N' dipropionic acid (EAP) by KMnO 4 in the presence of hydrochloric acid. Under optimal conditions, the sensivity of the method is 20 ng/cm 3 . The probable relative error is 7.6 - 14.5 % for the concentration range 50 - 200 ng/cm 3 As(III). The effect of certain foreign ions upon the reaction rate were determined for the assessment of the selectivity of the method. The method has relatively good selectivity. Kinetic equations were proposed for the investigated process.

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