Premium
Tools for the Development of Electrochemical Sensors: an EQCM Flow Cell with Flow Focusing
Author(s) -
Malitesta Cosimino,
Picca Rosaria Anna,
Mazzotta Elisabetta,
Guascito Maria Rachele
Publication year - 2012
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.201100559
Subject(s) - quartz crystal microbalance , materials science , electrochemistry , sensitivity (control systems) , piezoelectricity , flow (mathematics) , viscoelasticity , electrode , analytical chemistry (journal) , composite material , electronic engineering , chemistry , chromatography , mechanics , adsorption , physics , organic chemistry , engineering
A novel flow cell capable of improving piezoelectric response in system combining Electrochemical Quartz Crystal Microbalance (EQCM) and Flow Injection Analysis is presented. The original design of flow cell modified in shape and position of ports compared to other models for QCM is proposed. Electrochemical and viscoelastic experiments showed focusing of the sample in the central zone between ports and a remarkable enhancement of mass sensitivity compared to Sauerbrey value. Enhancement of mass sensitivity may allow piezoelectric device to be applied to the same concentration range of electrochemical ones and may be used as a tool to develop electrochemical sensors.