TY - JOUR
T1 - Potentiometric measurement with a Kelvin probe
T2 - Contactless measurement of chloride ions in aqueous electrolyte
AU - Abbas, Y.
AU - Zhu, X.
AU - de Boer, H.L.
AU - Tanvir, N.B.
AU - Olthuis, W.
AU - van den Berg, A.
N1 - Funding Information:
This work is a part of the STW project “Integral solution for sustainable construction (IS2C, http://is2c.nl/project-10968/ )”. We are grateful to the STW Netherlands for their financial support .
Publisher Copyright:
© 2016 Elsevier B.V.
PY - 2016/11/29
Y1 - 2016/11/29
N2 - For the first time the chloride ion concentration in electrolyte is measured using a Kelvin probe. A silver-silver chloride (Ag/AgCl) electrode, which is a chloride ion selective electrode, is used as a sample plate in the electrolyte and the Kelvin probe is used as a reference plate that is vibrating above the electrolyte. The open-circuit potential (OCP) of the Ag/AgCl electrode is a function of the Cl− concentration. The contact potential difference (CPD), measured by the Kelvin probe, gives the OCP of the Ag/AgCl electrode. The measurement does not require any contact between the reference plate and the electrolyte. This approach opens the possibilities for using a Kelvin probe as a contactless reference electrode in electrochemical measurements, such as potentiometry.
AB - For the first time the chloride ion concentration in electrolyte is measured using a Kelvin probe. A silver-silver chloride (Ag/AgCl) electrode, which is a chloride ion selective electrode, is used as a sample plate in the electrolyte and the Kelvin probe is used as a reference plate that is vibrating above the electrolyte. The open-circuit potential (OCP) of the Ag/AgCl electrode is a function of the Cl− concentration. The contact potential difference (CPD), measured by the Kelvin probe, gives the OCP of the Ag/AgCl electrode. The measurement does not require any contact between the reference plate and the electrolyte. This approach opens the possibilities for using a Kelvin probe as a contactless reference electrode in electrochemical measurements, such as potentiometry.
KW - Chloride ion detection
KW - Contactless measurement
KW - Kelvin probe
KW - Potentiometric measurement
KW - Silver-silver chloride electrode
KW - 2023 OA procedure
UR - http://www.scopus.com/inward/record.url?scp=84989894473&partnerID=8YFLogxK
U2 - 10.1016/j.snb.2016.06.150
DO - 10.1016/j.snb.2016.06.150
M3 - Article
SN - 0925-4005
VL - 236
SP - 1126
EP - 1132
JO - Sensors and Actuators B: Chemical
JF - Sensors and Actuators B: Chemical
ER -