Accès ouvert
2025
article
OpenAlex
Martin Koall, Eva Pospíšilová, Joachim Rewitzer, Thomas Herl et autres
Novel psychoactive substances are an emerging threat in the field of illegally consumed compounds. The subgroup of synthetic cathinones increased in popularity due to their great variety and the lack of powerful instrumental methods for their efficient monitoring. In the context of …
de, cz
(code pays fourni par la source)
Accès ouvert
2023
article
OpenAlex
Martin Koall, Daniel Böhm, Thomas Herl, Frank‐Michael Matysik
Abstract In this work, we present the sensitive and selective determination of the widely used insecticide nitenpyram (NIT), utilizing a newly developed dual detection concept (DDC) for capillary electrophoresis (CE). This DDC was realized by combining two complementary detection principles, namely amperometric …
de
(code pays fourni par la source)
Accès ouvert
2020
article
OpenAlex
Thomas Herl, Frank‐Michael Matysik
Abstract Hyphenation of electrochemistry and mass spectrometry is an attractive method to investigate oxidation and reduction processes. By using mass spectrometry, electrochemically generated products can be identified. In this Review, different approaches to electrochemistry–mass spectrometry will be summarized, including hyphenation of electrochemical …
de
(code pays fourni par la source)
2020
article
OpenAlex
Thomas Herl, Frank‐Michael Matysik
The electrooxidation of thymine on screen-printed carbon electrodes was investigated utilizing different complementary instrumental approaches. The potential-dependent product profile was obtained by recording real-time mass voltammograms. Electrochemical flow cells with integrated disposable electrodes were directly coupled with mass spectrometry to facilitate a …
de
(code pays fourni par la source)
Accès ouvert
2020
dissertation
OpenAlex
Thomas Herl
Hyphenation of electrochemistry and mass spectrometry is a very versatile method for different kinds of applications such as • electrochemical online sample pretreatment for enhanced detectability of analytes and separation performance • elucidation of oxidation and reduction mechanisms by identification of intermediates …
Accès ouvert
2019
article
OpenAlex
Thomas Herl, Lukáš Taraba, Daniel Böhm, Frank‐Michael Matysik
The electrooxidation of cytosine on common commercially available screen-printed carbon electrodes was investigated. To characterize the processes on the electrode surface, the oxidation products were analyzed by online electrochemistry-capillary electrophoresis-mass spectrometry. Capillary electrophoresis was the ideal separation technique as all occurring species …
de, cz
(code pays fourni par la source)
2018
article
OpenAlex
Andrea Beutner, Thomas Herl, Frank‐Michael Matysik
de
(code pays fourni par la source)
2018
article
OpenAlex
Magno Aparecido Gonçalves Trindade, Cauê Alves Martins, Lúcio Angnes, Thomas Herl et autres
A newly configured electrochemical flow cell to be used for (end-channel) amperometric detection in a microfluidic device is presented. The design was assembled to place the reference electrode in a separated compartment, isolated from the flow in the microchannel, while the working …
br, de
(code pays fourni par la source)
2018
article
OpenAlex
Thomas Herl, Nicole Heigl, Frank‐Michael Matysik
de
(code pays fourni par la source)
2017
article
OpenAlex
Jan Klouda, Jiřı́ Barek, Pavel Kočovský, Thomas Herl et autres
cz, de
(code pays fourni par la source)
2017
article
OpenAlex
Thomas Herl, Frank‐Michael Matysik
Abstract The characterization of the redox behavior of analytes is a very important aspect for many applications. Pure electrochemical approaches can provide useful information on electroactive species, but are of limited use regarding the identification of generated species. The hyphenation of electrochemistry …
de
(code pays fourni par la source)