Suppression of protein interferences in anodic stripping voltammetry by sodium dodecyl sulphate

被引：19

作者：

Hoyer, B ^{[1
]}

Jensen, N ^{[1
]}

机构：

[1] Aarhus Univ, Dept Chem, DK-8000 Aarhus C, Denmark

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2003年 / 5卷 / 03期

关键词：

anodic stripping voltammetry; sodium dodecyl sulphate; protein interferences; electrode fouling; cadmium; lead;

D O I：

10.1016/S1388-2481(03)00042-0

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The anionic surfactant sodium dodecyl sulphate (SDS) can effect desorption of proteins from surfaces, and this mechanism has been exploited for suppressing adsorption interferences in anodic stripping voltammetry (ASV). Using cadmium and lead as test analytes, and albumin and lysozyme as model interferents, it was found that ASV signals strongly depressed by proteins regain their initial magnitude (prior to protein addition) when SDS is added in a concentration above a threshold value. Also, SDS protected against protein interference when the surfactant was added prior to the protein. SDS in itself caused little or no interference. (C) 2003 Elsevier Science B.V. All rights reserved.

引用

页码：257 / 261

页数：5

共 23 条

[1] Polarography and voltammetry at mercury electrodes [J].