Application of a biomimetic sensor based on iron phthalocyanine chloride: 4-methylbenzylidene-camphor detection

Journal of the Brazilian Chemical Society

Ana Carolina Boni²  Maria D. P. T. Sotomayor²  Marcos R. V. Lanza¹  Sônia Maria C. N. Tanaka¹  Auro A. Tanaka¹ 

[1] ,Universidade Estadual Paulista Instituto de Química Departamento de Química AnalíticaAraraquara SP ,Brazil

关键词: iron phthalocyanine;    amperometric sensor;    methylbenzylidene camphor;   

DOI  :  10.1590/S0103-50532010000700025

来源: SciELO

【 摘 要 】

The construction and application of a biomimetic sensor for determination of 4-methylbenzylidene camphor (4-MBC), an ultraviolet (UV) radiation protector, are described. The sensor was prepared by modifying a carbon paste electrode with iron(III) phthalocyanine chloride (FePcCl). Amperometric measurements carried out with the sensor under an applied potential of 0.0 V vs. Ag|AgCl in a mixture of tetrahydrofuran and 0.1 mol L-1 H2SO4 solution (30:70 volume ratio) showed a linear response range from 1.8×10-4 to 9.0×10-4 mol L-1. A detailed selectivity investigation for other nine UV filters was also performed. A sensor response mechanism was proposed and the results for 4-MBC quantification in commercial sunscreens and in water from swimming pools and rivers are presented.

【 授权许可】

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