Abstract
A hardened gelatin gel deposited on a transparent polymeric matrix is of interest for the development of highly sensitive methods which combine concentration and subsequent determination of the analyte in the solid phase. For visual test for determination of lead (II) commercial photographic film with immobilized indikator bromopyrogallol red is proposed to use. The optimal conditions for the immobilization of the reagent and the metal complex in the film are determined. The composition and stability of the indicator reaction products are evaluated in solution and heterogeneous water / gelatin film. On the basis of these studies the technique of visual test determination of lead, based on the formation of complex compounds of Pb (II) c bromopyrogallol red in the medium hardened gelatin gel are found. Metrological characteristics of the proposed method of visual test determination of Pb (II) with the use of the indicator film are developed. Correctness of the methodology for determination of lead was tested on model solutions and real objects. Keywords: bromopyrogallol red, lead (II), the indicator gelatin film, immobilization, visual colorimetry. (Russian) DOI: http://dx.doi.org/10.15826/analitika.2014.18.3.009 P.V Anisimovich 1 , Z.A Temerdashev 1 , T.B Pochinok 1 , E.A. Reshetniak 2 , T.S. Smolenskaya 1 , O.Iu. Lomakina 1 1 Federal state budget educational institution of higher professional education "Kuban State University" , Krasnodar, Russian Federation 2 V.N. Karazin Kharkiv National University , Kharkiv, Ukraine
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