Planejamento fatorial e superfície de resposta: otimização de um método voltamétrico para a determinação de ag(i) empregando um eletrodo de pasta de nanotubos de carbono

Química Nova

Fernando Campanhã Vicentini¹  Luiz Carlos Soares Figueiredo-filho¹  Bruno C. Janegitz¹  Aline Santiago¹  Edenir Rodrigues Pereira-filho¹  Orlando Fatibello-filho¹ 

[1] ,Universidade Federal de São Carlos Departamento de Química São Carlos SP ,Brasil

关键词: carbon nanotubes;    factorial design;    silver(I);   

DOI  :  10.1590/S0100-40422011000500018

来源: SciELO

【 摘 要 】

A factorial design applied in a voltammetric stripping method for the measurement of Ag(I) in natural water is described. The procedure is based on the effective pre-concentration of silver ions on electrode surface. The calibration graph was linear in the silver concentration range from 7.92 x 10"7 to 1.07 x 10"5 mol L"1 with a detection limit of 3.81 x 10-7 mol L-1. The determination of Ag(I) in natural water samples was carried out satisfactory with the proposed electrode.

【 授权许可】

CC BY-NC   
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