Development of miniature all-solid-state potentiometric sensing system

SENSORS AND ACTUATORS B-CHEMICAL

卷:146

Article

Anastasova-Ivanova, Salzitsa¹  Mattinen, Ulriika^2,3  Radu, Aleksandar¹  Bobacka, Johan^2,3  Lewenstam, Andrzej^2,3  Migdalski, Jan⁴  Danielewskic, Marek⁴  Diamond, Dermot¹ 

[1] Dublin City Univ, Sch Chem Sci, Natl Ctr Sensor Res, Adapt Sensors Grp, Dublin 9, Ireland

[2] Abo Akad Univ, Proc Chem Ctr, Analyt Chem Lab, FI-20500 Turku, Finland

[3] Abo Akad Univ, Ctr Proc Analyt Chem & Sensor Technol ProSens, FI-20500 Turku, Finland

[4] AGH Univ Sci & Technol, PL-30059 Krakow, Poland

关键词: Solid-contact electrode;    Ion-selective electrode;    Reference electrode;    Potentiometry;    Speciation;    Water analysis;   

DOI  :  10.1016/j.snb.2010.02.044

来源: Elsevier

【 摘 要 】

A procedure for the development of a pen-like, multi-electrode potentiometric sensing platform is described. The platform comprises a seven-in-one electrode incorporating all-solid-state ion-selective and reference electrodes based on the conductive polymer (poly(3,4-ethylenedioxythiophene)(PEDOT)) as an intermediate layer between the contacts and ion-selective membranes. The ion-selective electrodes are based on traditional, ionophore-based membranes, while the reference electrode is based on a polymer membrane doped with the lipophilic salt tetrabutyl ammonium tetrabutyl borate (TBA-TBB). The electrodes, controlled with a multichannel detector system, were used for simultaneous determination of the concentration of Pb2+ and pH in environmental water samples. The results obtained using pH-selective electrodes were compared with data obtained using a conventional pH meter and the average percent difference was 0.3%. Furthermore, the sensing system was successfully used for lead-speciation analysis in environmental water samples. (c) 2010 Elsevier B.V. All rights reserved.

【 授权许可】

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