Jean-Daniel Berset

University of Bern

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R. Holzer

Spiez Laboratory

Leon Barron

Imperial College London

Christoph Ort

Swiss Federal Institute of Aquatic Science and Technology

José Antonio Baz-Lomba

Norwegian Institute of Public Health

María Jesús Andrés-Costa

Universitat de València

Frederic Béen

KWR Water Research Institute

Iria González‐Mariño

Universidad de Salamanca

Lubertus Bijlsma

Universitat Jaume I

Ivona Krizman-Matasic

Rudjer Boskovic Institute

Sara Karolak

Écologie, Systématique et Évolution

Cooperative Institutions

University of Bern

University of Queensland

Max Planck Institute for Chemical Ecology

Swiss Federal Institute of Aquatic Science and Technology

Universitat Jaume I

University of Lausanne

Centre National de la Recherche Scientifique

Mario Negri Institute for Pharmacological Research

Istituti di Ricovero e Cura a Carattere Scientifico

Universidade de Santiago de Compostela

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Biotransformation of Dehydroabietic, Abietic, and Isopimaric Acids by Mortierella isabellina Immobilized in Polyurethane Foam

Applied and Environmental Microbiology (1988)

James P. Kutney Jean-Daniel Berset Gary M. Hewitt Mahatam Singh

Polyurethane foam supports immobilization of Mortierella isabellina ATCC 38063, a zygomycete that hydroxylates and thereby detoxifies resin acids found in certain pulp mill effluents. The fungus becomes entrapped as it threads growing mycelia through the open foam matrix. The tenacity of binding and the amount of biomass bound depend on initial spore numbers and nutrient concentration. Optimal dehydroabietic acid transformation occurs with early-stationary-phase foam-bound mycelia suspended in buffer at pH 6.5 to 8.5 with aeration >0.1 liter liter −1 min −1 and near a temperature maximum of 33°C. Neither a greater number of similarly loaded foam cubes nor a greater surface area for similar amounts of biomass increased transformation rates. Compared to free mycelial cultures, foam presence retards growth and decreases the rate of precursor transformation but does not alter the nature of the metabolites formed from dehydroabietic acid, abietic acid, or isopimaric acid. Diffusional barriers or binding of substrates in an inaccessible manner may cause the observed inhibitions. Overall, foam immobilization stabilizes enzymic activity and is a facile laboratory process with scaleup potential.

Abietic acid

Biotransformation

10.1128/aem.54.4.1015-1022.1988

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Citations (18)

Illicit drugs in wastewater - SCORE initiative

Christoph Ort ‪Nikiforos Alygizakis María Jesús Andrés-Costa Richard Bade Anne Bannwarth

Illicit drug

10.25678/000172

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Citations (0)

Comparison of high resolution gas chromatography with electron impact and negative ion mass spectrometry detection for the determination of coplanar polychlorobiphenyl congeners in sewage sludges

Analytical and Bioanalytical Chemistry (1996)

Vittorio Raverdino R. Holzer Jean-Daniel Berset

Fragmentation

10.1007/s0021663540477

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Citations (12)

Determination of Sources and Emissions of Persistent Organic Contaminants by Means of Sewage Sludge: Results from a Monitoring Network

Environmental pollution (2009)

Thomas Küpper Luiz Felippe De Alencastro Jean-Daniel Berset

Sewage sludge

Biocide

10.1007/978-90-481-3509-7_8

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Citations (1)

Comprehensive Non-Targeted Analysis of Contaminated Groundwater of a Former Ammunition Destruction Site using 1H-NMR and HPLC-SPE-NMR/TOF-MS

Environmental Science & Technology (2009)

Markus Godejohann L. Heintz Cristina Daolio Jean-Daniel Berset Daniel Muff

The aim of the present study was to explore the capabilities of the combination of 1H NMR (proton nuclear magnetic resonance) mixture analysis and HPLC-SPE-NMR/TOF-MS (high-performance liquid chromatography coupled to solid-phase extraction and nuclear magnetic resonance and time-of-flight mass spectrometry) for the characterization of xenobiotic contaminants in groundwater samples. As an example, solid-phase extracts of two groundwater samples taken from a former ammunition destruction site in Switzerland were investigated. 1H NMR spectra of postcolumn SPE enriched compounds, together with accurate mass measurements, allowed the structural elucidation of unknowns. This untargeted approach allowed us to identify expected residues of explosives such as 2,4,6-trinitrotoluene (2,4,6-TNT), Hexogen (RDX) and Octogen (HMX), degradation products of TNT (1,3,5-trinitrobenzene (1,3,5-TNB), 2-amino-4,6-dinitrotoluene (2-A-4,6-DNT), 3,5-dinitrophenol (3,5-DNP), 3,5-dinitroaniline (3,5-DNA), 2,6-dinitroanthranite, and 2-Hydroxy-4,6-dinitrobenzonitrile), benzoic acid, Bisphenol A (a known endocrine disruptor compound), and some toxicologically relevant additives for propelling charges: Centralite I (1,3-diethyl-1,3-diphenylurea), DPU (N,N-diphenylurethane), N,N-diphenylcarbamate (Acardite II), and N-methyl-N-phenylurethane. To our knowledge, this is the first report of the presence of these additives in environmental samples. Extraction recoveries for Centralite I and DPU have been determined. Contaminants identified by our techniques were quantified based on HPLC-UV (HPLC-ultraviolet detection) and 1H NMR mixture analysis. The concentrations of the contaminants ranged between 0.1 and 48 microg/L assuming 100% recovery for the SPE step.

Solid phase extraction

Proton NMR

Trinitrotoluene

10.1021/es901068d

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Citations (36)

Assessment of total uncertainty in cocaine and benzoylecgonine wastewater load measurements

Water Research (2011)

Christoph Mathieu Jörg Rieckermann Jean-Daniel Berset Stefan Schürch Rudolf Brenneisen

Benzoylecgonine

10.1016/j.watres.2011.09.049

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Citations (37)

Quantitative determination of polycyclic aromatic hydrocarbons, polychlorinated biphenyls and organochlorine pesticides in sewage sludges using supercritical fluid extraction and mass spectrometric detection

Journal of Chromatography A (1999)

Jean-Daniel Berset R. Holzer

Supercritical fluid extraction

Sewage sludge

10.1016/s0021-9673(99)00641-x

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Citations (93)

UV Filter, Biozide, synthetische Duftstoffe und polybromierte Flammschutzmittel im Klärschlamm - Belastung und Quellen

Thomas Küpper Cécile Plagellat Jean-Daniel Berset Christophe Bonnet Luiz Felippe De Alencastro

Im Abwasser ist eine grosse Anzahl von Schadstoffen anthropogener Herkunft zu finden. Nach ihrer Verwendung gelangen sie mit dem verbrauchten Wasser aus privaten Haushalten sowie aus Industrie und Gewerbe oder via atmospharische Deposition mit dem Abfluss von befestigten Flachen in die Kanalisation. In den Klaranlagen werden lipophile Verbindungen weitgehend an die Feststoffe adsorbiert. Deshalb enthalt Klarschlamm eine Vielzahl von Schadstoffen und ist eine geeignete Matrix zur Beobachtung von Emissionen. UV Filter (Methylbenzylidencampher, 4-MBC; Octylmethoxycinnamat, OMC; Octocrylen, OC; Octyltriazon, OT), Biozide (Carbendazim, Diuron, Irgarol 1051®, Octhilinon, Permethrin, Tributylzinn, TBT; Triphenylzinn, TPT), synthetische Duftstoffe (polyzyklische Moschus-Verbindungen: HHCB, AHTN, ADBI, AHDI, ATII und der Metabolit HHCB–Lakton) sowie polybromierte Flammschutzmittel (polybromierte Diphenylether, PBDE) wurden im Klarschlamm von 17 eingehend beschriebenen Beobachtungsstandorten (Klaranlage und dazu gehoriges Einzugsgebiet) eines Beobachtungsnetzes in der Schweiz untersucht. Die mittleren Gehalte im stabilisierten Klarschlamm lagen in der Grossenordnung von 10 μg/kg TS (Trockensubstanz) fur 4-MBC, OC, OT, HHCB, AHTN sowie HHCB-Lakton und im Bereich von ca. 10 bis 100 μg/kg TS fur OMC, ADBI, AHDI, ATII, Carbendazim, Diuron, Irgarol 1051®, Permethrin, TBT, TPT und PBDE. Die spezifischen Frachten (Fracht pro angeschlossenen Einwohner) im Klarschlamm in verschiedenen Typen von Beobachtungsstandorten zeigten, dass UV Filter teilweise aus privaten Haushalten stammen. Die atmospharische Deposition und industrielle Aktivitaten sind weitere Quellen. Fur Biozide und PBDE besteht eine von den privaten Haushalten verursachte Hintergrundbelastung. Die atmospharische Deposition ist jedoch die Hauptquelle. Polyzyklische Moschus-Verbindungen werden fast ausschliesslich von den privaten Haushalten freigesetzt.

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Spatio-temporal assessment of illicit drug use at large scale: evidence from seven years of international wastewater monitoring

Addiction (2019)

Iria González‐Mariño José Antonio Baz-Lomba ‪Nikiforos Alygizakis María Jesús Andrés-Costa Richard Bade

Illicit drug

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Citations (3)

Strengthening of reinforced concrete beams for shear using FRP composites

Jean-Daniel Berset

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Citations (23)