Search Results - "KOURTCHEV, Ivan"

The Molecular Identification of Organic Compounds in the Atmosphere: State of the Art and Challenges by Nozière, Barbara, Kalberer, Markus, Claeys, Magda, Allan, James, D’Anna, Barbara, Decesari, Stefano, Finessi, Emanuela, Glasius, Marianne, Grgić, Irena, Hamilton, Jacqueline F, Hoffmann, Thorsten, Iinuma, Yoshiteru, Jaoui, Mohammed, Kahnt, Ariane, Kampf, Christopher J, Kourtchev, Ivan, Maenhaut, Willy, Marsden, Nicholas, Saarikoski, Sanna, Schnelle-Kreis, Jürgen, Surratt, Jason D, Szidat, Sönke, Szmigielski, Rafal, Wisthaler, Armin

“…The authors examines issues related to the molecular identification of organic compounds in the atmosphere. Topics discussed include optically active compounds…”
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Characterization of Atmospheric Aerosols at a Forested Site in Central Europe by Kourtchev, Ivan, Copolovici, Lucian, Claeys, Magda, Maenhaut, Willy

“…Mass concentrations, mass size distributions, time series, and diel variations for organic tracers and major inorganic ions in aerosols from K-puszta, Hungary,…”
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Molecular Composition of Boreal Forest Aerosol from Hyytiälä, Finland, Using Ultrahigh Resolution Mass Spectrometry by KOURTCHEV, Ivan, FULLER, Stephen, AALTO, Juho, RUUSKANEN, Taina M, MCLEOD, Matthew W, MAENHAUT, Willy, JONES, Rod, KULMALA, Markku, KALBERER, Markus

“…Organic compounds are important constituents of fine particulate matter (PM) in the troposphere. In this study, we applied direct infusion nanoelectrospray…”
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Multiphase composition changes and reactive oxygen species formation during limonene oxidation in the new Cambridge Atmospheric Simulation Chamber (CASC) by Gallimore, Peter J, Mahon, Brendan M, Wragg, Francis P. H, Fuller, Stephen J, Giorio, Chiara, Kourtchev, Ivan, Kalberer, Markus

“…The chemical composition of organic aerosols influences their impacts on human health and the climate system. Aerosol formation from gas-to-particle conversion…”
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Polar organic marker compounds in PM2.5 aerosol from a mixed forest site in western Germany by Kourtchev, Ivan, Warnke, Jörg, Maenhaut, Willy, Hoffmann, Thorsten, Claeys, Magda

“…The molecular composition of PM2.5 (particulate matter with an aerodynamic diameter <2.5 μm) aerosol samples collected during a very warm and dry 2003 summer…”
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3-methyl-1,2,3-butanetricarboxylic acid: An atmospheric tracer for terpene secondary organic aerosol by Szmigielski, Rafal, Surratt, Jason D., Gómez-González, Yadian, Van der Veken, Pieter, Kourtchev, Ivan, Vermeylen, Reinhilde, Blockhuys, Frank, Jaoui, Mohammed, Kleindienst, Tadeusz E., Lewandowski, Michael, Offenberg, John H., Edney, Edward O., Seinfeld, John H., Maenhaut, Willy, Claeys, Magda

“…Highly oxygenated compounds assigned to be oxidation products of α‐pinene have recently been observed in substantial concentrations in ambient aerosols. Here,…”
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Characterization of oxygenated derivatives of isoprene related to 2-methyltetrols in Amazonian aerosols using trimethylsilylation and gas chromatography/ion trap mass spectrometry by Wang, Wu, Kourtchev, Ivan, Graham, Bim, Cafmeyer, Jan, Maenhaut, Willy, Claeys, Magda

“…In the present study, we have tentatively identified the structures of three oxygenated derivatives of isoprene in Amazonian rain forest aerosols as the C5…”
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Overview of the inorganic and organic composition of size-segregated aerosol in Rondônia, Brazil, from the biomass-burning period to the onset of the wet season by Fuzzi, Sandro, Decesari, Stefano, Facchini, Maria Cristina, Cavalli, Fabrizia, Emblico, Lorenza, Mircea, Mihaiela, Andreae, Meinrat O., Trebs, Ivonne, Hoffer, András, Guyon, Pascal, Artaxo, Paulo, Rizzo, Luciana V., Lara, Luciene L., Pauliquevis, Theotonio, Maenhaut, Willy, Raes, Nico, Chi, Xuguang, Mayol-Bracero, Olga L., Soto-García, Lydia L., Claeys, Magda, Kourtchev, Ivan, Rissler, Jenny, Swietlicki, Erik, Tagliavini, Emilio, Schkolnik, Gal, Falkovich, Alla H., Rudich, Yinon, Fisch, Gilberto, Gatti, Luciana V.

“…The aerosol characterization experiment performed within the Large‐Scale Biosphere‐Atmosphere Experiment in Amazonia–Smoke, Aerosols, Clouds, Rainfall and…”
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Disposable surgical/medical face masks and filtering face pieces: Source of microplastics and chemical additives in the environment by Bogush, Anna A., Kourtchev, Ivan

“…The production and consumption of disposable face masks (DFMs) increased intensely during the COVID-19 pandemic, leading to a high amount of them being found…”
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Effect of short-term sample storage and preparatory conditions on losses of 18 per- and polyfluoroalkyl substances (PFAS) to container materials by Folorunsho, Omotola, Kizhakkethil, Jishnu Pandamkulangara, Bogush, Anna, Kourtchev, Ivan

“…There is a lack of agreement on a suitable container material for per- and polyfluoroalkyl substances (PFAS) analysis, particularly at trace levels. In this…”
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A new on-line SPE LC-HRMS method for the analysis of Perfluoroalkyl and Polyfluoroalkyl Substances (PFAS) in PM2.5 and its application for screening atmospheric particulates from Dublin and Enniscorthy, Ireland by Kourtchev, Ivan, Hellebust, Stig, Heffernan, Eimear, Wenger, John, Towers, Sam, Diapouli, Evangelia, Eleftheriadis, Konstantinos

“…A sensitive analytical method has been developed and validated for the determination of 16 polyfluorinated alkyl substances (PFAS) in fine airborne particulate…”
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Aerosolisation of per- and polyfluoroalkyl substances (PFAS) during aeration of contaminated aqueous solutions by Pandamkulangara Kizhakkethil, Jishnu, Shi, Zongbo, Bogush, Anna, Kourtchev, Ivan

“…Environmental pollution by per- and polyfluoroalkyl substances (PFAS), commonly known as “forever chemicals”, is a major concern. Numerous studies have…”
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Per- and polyfluoroalkyl substances (PFASs) in urban PM2.5 samples from Curitiba, Brazil by Kourtchev, Ivan, Sebben, Bruna G., Bogush, Anna, Godoi, Ana Flavia L., Godoi, Ricardo H.M.

“…Per- and polyfluoroalkyl substances (PFASs), also known as “forever chemicals” received significant attention during recent years due to their environmental…”
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Mass Spectrometry Characterization of Peroxycarboxylic Acids as Proxies for Reactive Oxygen Species and Highly Oxygenated Molecules in Atmospheric Aerosols by Steimer, Sarah S, Kourtchev, Ivan, Kalberer, Markus

“…A significant fraction of atmospheric aerosol particles is composed of organic material with a highly complex but poorly characterized composition. For a…”
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Direct target and non-target analysis of urban aerosol sample extracts using atmospheric pressure photoionisation high-resolution mass spectrometry by Giorio, Chiara, Bortolini, Claudio, Kourtchev, Ivan, Tapparo, Andrea, Bogialli, Sara, Kalberer, Markus

“…Polycyclic aromatic hydrocarbons (PAHs) are ubiquitous atmospheric pollutants of high concern for public health. In the atmosphere they undergo oxidation,…”
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Chemical characterization and sources of background aerosols in the eastern Mediterranean by Florou, Kalliopi, Liangou, Aikaterini, Kaltsonoudis, Christos, Louvaris, Evangelos, Tasoglou, Antonios, Patoulias, David, Kouvarakis, Giorgos, Kalivitis, Nikos, Kourtchev, Ivan, Kalberer, Markus, Tsagkaraki, Maria, Mihalopoulos, Nikolaos, Pandis, Spyros N.

“…Measurements of the composition of the gas and particulate phases were conducted from May 9 to June 4 of 2016 at the Finokalia (Greece) remote coastal site in…”
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A new processing scheme for ultra-high resolution direct infusion mass spectrometry data by Zielinski, Arthur T., Kourtchev, Ivan, Bortolini, Claudio, Fuller, Stephen J., Giorio, Chiara, Popoola, Olalekan A.M., Bogialli, Sara, Tapparo, Andrea, Jones, Roderic L., Kalberer, Markus

“…High resolution, high accuracy mass spectrometry is widely used to characterise environmental or biological samples with highly complex composition enabling…”
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Enhanced Volatile Organic Compounds emissions and organic aerosol mass increase the oligomer content of atmospheric aerosols by Kourtchev, Ivan, Giorio, Chiara, Manninen, Antti, Wilson, Eoin, Mahon, Brendan, Aalto, Juho, Kajos, Maija, Venables, Dean, Ruuskanen, Taina, Levula, Janne, Loponen, Matti, Connors, Sarah, Harris, Neil, Zhao, Defeng, Kiendler-Scharr, Astrid, Mentel, Thomas, Rudich, Yinon, Hallquist, Mattias, Doussin, Jean-Francois, Maenhaut, Willy, Bäck, Jaana, Petäjä, Tuukka, Wenger, John, Kulmala, Markku, Kalberer, Markus

“…Secondary organic aerosol (SOA) accounts for a dominant fraction of the submicron atmospheric particle mass, but knowledge of the formation, composition and…”
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Chemical water monitoring under the Water Framework Directive with Certified Reference Materials by Ricci, Marina, Kourtchev, Ivan, Emons, Hendrik

“…► Quality and comparability of water chemical monitoring results should be ensured. ► CRMs are necessary for quality assurance and quality control of…”
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Occurrence of a “forever chemical” in the atmosphere above pristine Amazon Forest by Kourtchev, Ivan, Sebben, Bruna G., Brill, Sebastian, Barbosa, Cybelli, G.G., Weber, Bettina, Ferreira, Rosaria R., D'Oliveira, Flávio Augusto Farias, Dias-Junior, Cléo Q., Popoola, Olalekan A.M., Williams, Jonathan, Pöhlker, Christopher, Godoi, Ricardo H.M.

“…Per- and polyfluoroalkyl substances (PFAS), often referred to as “forever chemicals”, are a class of man-made, extremely stable chemicals, which are widely…”
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