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

Journal of the Brazilian Chemical Society

Boni, Ana Carolina¹  Sotomayor, Maria D. P. T.¹  Universidade Federal do Maranhão, São Luís, Brazil¹  Tanaka, Sônia Maria C. N.¹  Universidade de São Paulo, São Carlos, Brazil¹  Instituto Nacional de Ciência e Tecnologia de Bioanalítica, Campinas, Brazil¹  Lanza, Marcos R. V.¹  Universidade Estadual Paulista, Araraquara, Brazil¹  Tanaka, Auro A.¹ 

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

DOI  :  10.1590/S0103-50532010000700025

学科分类：化学（综合）

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】

Unknown