Anomalous behaviour of the quartz crystal microbalance in the presence of electrolytes

Quartz crystal microbalance (QCM) impedance analysis was used as a microgravimetric tool for thiol adsorptions in a flow injection system. The presence of electrolyte was found to interfere with the proper measurement of the deposited mass and resulted in an error of more than 70%. Aqueous solutions...

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Detalles Bibliográficos
Publicado:	2000
Materias:	electrolyte silicon dioxide adsorption article crystal crystal structure crystallization elasticity gravimetry impedance
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00032654_v125_n5_p785_Etchenique http://hdl.handle.net/20.500.12110/paper_00032654_v125_n5_p785_Etchenique
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_00032654_v125_n5_p785_Etchenique
record_format	dspace
spelling	paper:paper_00032654_v125_n5_p785_Etchenique2023-06-08T14:23:53Z Anomalous behaviour of the quartz crystal microbalance in the presence of electrolytes electrolyte silicon dioxide adsorption article crystal crystal structure crystallization elasticity gravimetry impedance Quartz crystal microbalance (QCM) impedance analysis was used as a microgravimetric tool for thiol adsorptions in a flow injection system. The presence of electrolyte was found to interfere with the proper measurement of the deposited mass and resulted in an error of more than 70%. Aqueous solutions of 1:1 electrolytes, of up to 6 mM can cause mass errors as high as 60 ng cm-2, that is the equivalent of a monolayer of medium sized molecules. 1:2, 1:3, and 2:2 electrolytes yield even higher errors. The interference is mainly due to the mechanical elasticity of the Gouy Chapman diffuse double layer and cannot be excluded even by using sophisticated QCM impedance methods. 2000 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00032654_v125_n5_p785_Etchenique http://hdl.handle.net/20.500.12110/paper_00032654_v125_n5_p785_Etchenique
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	electrolyte silicon dioxide adsorption article crystal crystal structure crystallization elasticity gravimetry impedance
spellingShingle	electrolyte silicon dioxide adsorption article crystal crystal structure crystallization elasticity gravimetry impedance Anomalous behaviour of the quartz crystal microbalance in the presence of electrolytes
topic_facet	electrolyte silicon dioxide adsorption article crystal crystal structure crystallization elasticity gravimetry impedance
description	Quartz crystal microbalance (QCM) impedance analysis was used as a microgravimetric tool for thiol adsorptions in a flow injection system. The presence of electrolyte was found to interfere with the proper measurement of the deposited mass and resulted in an error of more than 70%. Aqueous solutions of 1:1 electrolytes, of up to 6 mM can cause mass errors as high as 60 ng cm-2, that is the equivalent of a monolayer of medium sized molecules. 1:2, 1:3, and 2:2 electrolytes yield even higher errors. The interference is mainly due to the mechanical elasticity of the Gouy Chapman diffuse double layer and cannot be excluded even by using sophisticated QCM impedance methods.
title	Anomalous behaviour of the quartz crystal microbalance in the presence of electrolytes
title_short	Anomalous behaviour of the quartz crystal microbalance in the presence of electrolytes
title_full	Anomalous behaviour of the quartz crystal microbalance in the presence of electrolytes
title_fullStr	Anomalous behaviour of the quartz crystal microbalance in the presence of electrolytes
title_full_unstemmed	Anomalous behaviour of the quartz crystal microbalance in the presence of electrolytes
title_sort	anomalous behaviour of the quartz crystal microbalance in the presence of electrolytes
publishDate	2000
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00032654_v125_n5_p785_Etchenique http://hdl.handle.net/20.500.12110/paper_00032654_v125_n5_p785_Etchenique
_version_	1768545580610486272

Anomalous behaviour of the quartz crystal microbalance in the presence of electrolytes

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