Searched for: author:"Poltorak, L."
(1 - 7 of 7)
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Haaring, Robert (author), Kumar, N. (author), Bosma, D. (author), Poltorak, L. (author), Sudholter, Ernst J. R. (author)
The ability to study the adsorption behavior of surfactant species is of interest in the field of enhanced oil recovery (EOR), especially pertaining to alkaline surfactant flooding. In this work, a calcite model mineral surface was obtained by electrochemically assisted deposition. This was achieved via the nitrate and/or oxygen...
journal article 2019
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Poltorak, L. (author), Sudholter, Ernst J. R. (author), de Puit, M. (author)
In this review, we describe the importance and possible electrochemical screening methods for the illicit drug – cocaine. It covers the detection at bare and modified solid electrodes, soft electrified junctions and nanopore sensing. Emphasis is given on interfacial modification techniques and electroanalytical parameters for cocaine...
review 2019
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Poltorak, L. (author), Oonk, S. (author), Sudholter, Ernst J. R. (author), de Puit, M. (author)
The behaviour of acid phosphatase at an electrified liquid–liquid interface was studied in this work. It was found that only the protonated form of the protein can undergo interfacial adsorption which is affected by the pH of the aqueous phase. With ion transfer voltammetry we could detect acid phosphatase in concentrations as low as 0.1 μM....
journal article 2018
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Rudnicki, K.P. (author), Poltorak, L. (author), Skrzypek, Sławomira (author), Sudholter, Ernst J. R. (author)
Short pieces of fused silica capillary tubing were used to support an electrified liquid-liquid interface. A methyl deactivated silica capillary having a diameter of 25 μm was filled with 1,2-dichloroethane solution and served as the organic part of the liquid-liquid interface. A nondeactivated fused silica capillary having a diameter of 5,...
journal article 2018
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Poltorak, L. (author), Hoitink, Marnix (author), Sudholter, Ernst J. R. (author), de Puit, M. (author)
A straightforward, direct, and selective method is presented for electrochemical cocaine identification in street samples. The sensing mechanism is based on a simple ion transfer reaction across the polarized liquid-liquid interface. The interfacial behavior of a number of cutting agents is also reported. Interfacial miniaturization has led...
journal article 2018
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Poltorak, L. (author), Verheijden, Mark L. (author), Bosma, D. (author), Jonkheijm, Pascal (author), de Smet, L.C.P.M. (author), Sudholter, Ernst J. R. (author)
Silicon semiconductors with a thin surface layer of silica were first modified with polyelectrolytes (polyethyleneimine, polystyrene sulfonate and poly(allylamine)) via a facile layer-by-layer deposition approach. Subsequently, lipid vesicles were added to the preformed polymeric cushion, resulting in the adsorption of intact vesicles or...
journal article 2018
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Poltorak, L. (author), Sudholter, Ernst J. R. (author), de Smet, L.C.P.M. (author)
The electrochemical behavior of three differently charged drug molecules (zwitter-ionic acetylcarnitine, bi-cationic succinylcholine and tri-cationic gallamine) was studied at the interface between two immiscible electrolyte solutions. Tetramethylammonium was used as a model mono cationic molecule and internal reference. The charge and...
journal article 2017
Searched for: author:"Poltorak, L."
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