A Proof-of-Principle Study for δ ¹⁵ N Measurements of Aqueous Dissolved Nitrate With a Modified LC-IRMS Interface.

Autor: Hesse T; Instrumental Analytical Chemistry, University of Duisburg-Essen, Essen, Germany.; Probenahmedienst Feststoffe, Ressourcen- und Qualitätsmanagement, Landesamt für Natur, Umwelt und Verbraucherschutz NRW, Duisburg, Germany., Niemann F; Instrumental Analytical Chemistry, University of Duisburg-Essen, Essen, Germany., Khaliq S; Instrumental Analytical Chemistry, University of Duisburg-Essen, Essen, Germany., Köster D; Institut für Arbeitsschutz der DGUV (IFA), Deutsche Gesetzliche Unfallversicherung e.V. (DGUV), Sankt Augustin, Germany., Enss J; Aquatic Ecology, Faculty of Biology, University of Duisburg-Essen, Essen, Germany.; Centre for Water and Environmental Research, University of Duisburg-Essen, Essen, Germany., Feld CK; Aquatic Ecology, Faculty of Biology, University of Duisburg-Essen, Essen, Germany.; Centre for Water and Environmental Research, University of Duisburg-Essen, Essen, Germany., Nachev M; Aquatic Ecology, Faculty of Biology, University of Duisburg-Essen, Essen, Germany.; Centre for Water and Environmental Research, University of Duisburg-Essen, Essen, Germany., Kerpen K; Instrumental Analytical Chemistry, University of Duisburg-Essen, Essen, Germany., Jochmann MA; Instrumental Analytical Chemistry, University of Duisburg-Essen, Essen, Germany.; Centre for Water and Environmental Research, University of Duisburg-Essen, Essen, Germany., Schmidt TC; Instrumental Analytical Chemistry, University of Duisburg-Essen, Essen, Germany.; Centre for Water and Environmental Research, University of Duisburg-Essen, Essen, Germany.

Publikováno v: Rapid communications in mass spectrometry : RCM [Rapid Commun Mass Spectrom] 2025 Feb 15; Vol. 39 (3), pp. e9950.

Evaluation of GC-EI&CI-TOFMS for Nontarget Analysis of Industrial Wastewater Using Hydrophilic-Lipophilic-Balanced SPME.

Autor: Tintrop LK; Instrumental Analytical Chemistry, University of Duisburg-Essen, Universitätsstraße 5, 45141 Essen, Germany.; Centre for Water and Environmental Research, University of Duisburg-Essen, Universitätsstraße 5, 45141 Essen, Germany., Bräkling S; TOFWERK AG, Schorenstrasse 39, 3645 Thun, Switzerland., Vetter M; TOFWERK AG, Schorenstrasse 39, 3645 Thun, Switzerland., Eßer W; Instrumental Analytical Chemistry, University of Duisburg-Essen, Universitätsstraße 5, 45141 Essen, Germany., Drees F; Instrumental Analytical Chemistry, University of Duisburg-Essen, Universitätsstraße 5, 45141 Essen, Germany., Salemi A; Instrumental Analytical Chemistry, University of Duisburg-Essen, Universitätsstraße 5, 45141 Essen, Germany., Jochmann MA; Instrumental Analytical Chemistry, University of Duisburg-Essen, Universitätsstraße 5, 45141 Essen, Germany.; Centre for Water and Environmental Research, University of Duisburg-Essen, Universitätsstraße 5, 45141 Essen, Germany., Klee S; TOFWERK AG, Schorenstrasse 39, 3645 Thun, Switzerland., Schmidt TC; Instrumental Analytical Chemistry, University of Duisburg-Essen, Universitätsstraße 5, 45141 Essen, Germany.; Centre for Water and Environmental Research, University of Duisburg-Essen, Universitätsstraße 5, 45141 Essen, Germany.; IWW Water Centre, Moritzstrasse 26, 45476 Mülheim an der Ruhr, Germany.

Publikováno v: Analytical chemistry [Anal Chem] 2024 Apr 23; Vol. 96 (16), pp. 6122-6130. Date of Electronic Publication: 2024 Apr 11.

Isotope-labeling in situ derivatization and HS-SPME arrow GC-MS/MS for simultaneous determination of fatty acids and fatty acid methyl esters in aqueous matrices.

Autor: Tintrop LK; Instrumental Analytical Chemistry, University of Duisburg-Essen, Universitätsstraße 5, 45141, Essen, Germany.; Centre for Water and Environmental Research, University of Duisburg-Essen, Universitätsstraße 5, 45141, Essen, Germany., Lieske-Overgrand JR; Instrumental Analytical Chemistry, University of Duisburg-Essen, Universitätsstraße 5, 45141, Essen, Germany., Wickneswaran K; Instrumental Analytical Chemistry, University of Duisburg-Essen, Universitätsstraße 5, 45141, Essen, Germany., Abis R; Instrumental Analytical Chemistry, University of Duisburg-Essen, Universitätsstraße 5, 45141, Essen, Germany., Brunstermann R; Urban Water and Waste Management, Faculty of Engineering, University of Duisburg-Essen, Universitätsstraße 15, 45141, Essen, Germany., Jochmann MA; Instrumental Analytical Chemistry, University of Duisburg-Essen, Universitätsstraße 5, 45141, Essen, Germany. maik.jochmann@uni-due.de.; Centre for Water and Environmental Research, University of Duisburg-Essen, Universitätsstraße 5, 45141, Essen, Germany. maik.jochmann@uni-due.de., Schmidt TC; Instrumental Analytical Chemistry, University of Duisburg-Essen, Universitätsstraße 5, 45141, Essen, Germany.; Centre for Water and Environmental Research, University of Duisburg-Essen, Universitätsstraße 5, 45141, Essen, Germany.; IWW Water Centre, Moritzstrasse 26, 45476, Mülheim an der Ruhr, Germany.

Publikováno v: Analytical and bioanalytical chemistry [Anal Bioanal Chem] 2023 Nov; Vol. 415 (26), pp. 6525-6536. Date of Electronic Publication: 2023 Sep 23.

A new technique to study nutrient flow in host-parasite systems by carbon stable isotope analysis of amino acids and glucose.

Autor: Hesse T; Instrumental Analytical Chemistry, University of Duisburg-Essen, Universitätsstr. 5, 45141, Essen, Germany., Nachev M; Aquatic Ecology, University of Duisburg-Essen, Universitätsstr. 5, 45141, Essen, Germany.; Centre for Water and Environmental Research, University of Duisburg-Essen, Universitätsstr. 5, 45141, Essen, Germany., Khaliq S; Instrumental Analytical Chemistry, University of Duisburg-Essen, Universitätsstr. 5, 45141, Essen, Germany., Jochmann MA; Instrumental Analytical Chemistry, University of Duisburg-Essen, Universitätsstr. 5, 45141, Essen, Germany. maik.jochmann@uni-due.de.; Centre for Water and Environmental Research, University of Duisburg-Essen, Universitätsstr. 5, 45141, Essen, Germany. maik.jochmann@uni-due.de., Franke F; Institute for Evolution & Biodiversity, University of Münster, Hüfferstr. 1, 48149, Münster, Germany.; Bavarian State Institute of Forestry, Hans-Carl-Von-Carlowitz-Platz 1, 85354, Freising, Germany., Scharsack JP; Institute for Evolution & Biodiversity, University of Münster, Hüfferstr. 1, 48149, Münster, Germany.; Thünen Institute of Fisheries Ecology, Herwigstr. 31, 27572, Bremerhaven, Germany., Kurtz J; Institute for Evolution & Biodiversity, University of Münster, Hüfferstr. 1, 48149, Münster, Germany., Sures B; Aquatic Ecology, University of Duisburg-Essen, Universitätsstr. 5, 45141, Essen, Germany.; Centre for Water and Environmental Research, University of Duisburg-Essen, Universitätsstr. 5, 45141, Essen, Germany., Schmidt TC; Instrumental Analytical Chemistry, University of Duisburg-Essen, Universitätsstr. 5, 45141, Essen, Germany.; Centre for Water and Environmental Research, University of Duisburg-Essen, Universitätsstr. 5, 45141, Essen, Germany.

Publikováno v: Scientific reports [Sci Rep] 2023 Jan 19; Vol. 13 (1), pp. 1054. Date of Electronic Publication: 2023 Jan 19.

Aromatic amines contents of cigarette butts: Fresh and aged cigarette butts vs unsmoked cigarette.

Autor: Dobaradaran S; Systems Environmental Health and Energy Research Center, The Persian Gulf Biomedical Sciences Research Institute, Bushehr University of Medical Sciences, Bushehr, Iran; Department of Environmental Health Engineering, Faculty of Health and Nutrition, Bushehr University of Medical Sciences, Bushehr, Iran; Instrumental Analytical Chemistry and Centre for Water and Environmental Research (ZWU), Faculty of Chemistry, University of Duisburg-Essen, Universitätsstr. 5, Essen, Germany. Electronic address: sina_dobaradaran@yahoo.com., Mutke XAM; Instrumental Analytical Chemistry and Centre for Water and Environmental Research (ZWU), Faculty of Chemistry, University of Duisburg-Essen, Universitätsstr. 5, Essen, Germany., Schmidt TC; Instrumental Analytical Chemistry and Centre for Water and Environmental Research (ZWU), Faculty of Chemistry, University of Duisburg-Essen, Universitätsstr. 5, Essen, Germany; Centre for Water and Environmental Research, University of Duisburg-Essen, Universitätsstr. 5, Essen, 45141, Germany., Swiderski P; Instrumental Analytical Chemistry and Centre for Water and Environmental Research (ZWU), Faculty of Chemistry, University of Duisburg-Essen, Universitätsstr. 5, Essen, Germany., De-la-Torre GE; Universidad San Ignacio de Loyola, Av. La Fontana 501, Lima 12, Lima, Peru., Jochmann MA; Instrumental Analytical Chemistry and Centre for Water and Environmental Research (ZWU), Faculty of Chemistry, University of Duisburg-Essen, Universitätsstr. 5, Essen, Germany.

Publikováno v: Chemosphere [Chemosphere] 2022 Aug; Vol. 301, pp. 134735. Date of Electronic Publication: 2022 Apr 27.