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Electroanalytical study of dimethyl phthalate by polarographic techniques in emulsified medium

✍ Scribed by A. Gonzalez Cortes; J.M. Pingarron Carrazon; L.M. Polo Diez

Publisher
Elsevier Science
Year
1991
Tongue
English
Weight
593 KB
Volume
36
Category
Article
ISSN
0013-4686

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✦ Synopsis

Ah&met-An electroanalytical study of the reduction process of dimethyl phthalate in an aqueous solution containing the cationic surfactant Hyamine 1622 and in an emulsified medium was carried out using tast and differential pulse polarography (dpp). In the emulsified medium formed from aliquots of dimethyl phthalate dissolved in a diethyl ether:ethyl acetate (I :9) mixture, and 0.015% Hyamine 1622 as emulsifying agent, dimethyl phthalate showed one well-defined peak by dpp. Limiting current is diffusion-controlled at a concentration level of 4.0 x IO-' mol l-r, and the polarographic reduction process is irreversible. Using dpp at AE = -50 mV, linear ir us dimethyl phthalate concentration plots were obtained in the ranges 1.0 x lo-L10.0 x lo-', 1.0 x 10-6-10.0 x 10e6 and 4.0 x lo-'-10.0 x IO-'mol I-', with a detection limit of 1.1 x 10-7moll-' dimethyl phthalate.

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