Factorial design and response surface: voltammetric method optimization for the determination of ag(i) employing a carbon nanotubes paste electrode

Quimica nova

Vicentini, Fernando Campanhã¹  Santiago, Aline¹  Pereira-Filho, Edenir Rodrigues¹  Figueiredo-Filho, Luiz Carlos Soares¹  Janegitz, Bruno C.¹  Fatibello-Filho, Orlando¹ 

[1] Universidade Federal de São Carlos, São Carlos, Brasil

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

DOI  :  10.1590/S0100-40422011000500018

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

A factorial designapplied in a voltammetric stripping method for the measurement of Ag(I) in naturalwater is described. The procedure is based on the effective pre-concentrationof silver ions on electrode surface. The calibration graph was linear in thesilver concentration range from 7.92 x 10"7 to 1.07 x 10"5mol 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 satisfactorywith the proposed electrode.

【 授权许可】

CC BY