Development of a modified QuEChERS method for multi-class pesticide analysis in human hair by GC-MS and UPLC-MS/MS

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Assessment of water resource contamination by pesticides in vegetable-producing areas in Burkina Faso

Luiz Felippe De Alencastro, Edouard René Gilbert Lehmann, Jean-Jacques Stéphane Nfon Dibie, Morgan Fargues

This study proposes a comprehensive approach to investigate water resource contamination by pesticides under the specific climatic and hydrological conditions of the Sudano-Sahelian climate. Samples were collected from tradi- tional wells, boreholes, and a ...

2018

Fast real time and quantitative gas analysis method for the investigation of the CO2 reduction reaction mechanism

Andreas Züttel, Emanuele Moioli, Wen Luo, Robin Tobias Andreas Mutschler

We present a new fast real time and quantitative gas analysis method by means of mass spectrometry (MS), which has approximately an order of magnitude faster sampling rate in comparison with a traditional gas chromatography. The method is presented and dis ...

AMER INST PHYSICS2018

Multiplexed Middle-Down Mass Spectrometry as a Method for Revealing Light and Heavy Chain Connectivity in a Monoclonal Antibody

Yury Tsybin, Natalia Gasilova, Laure Menin, Anton Kozhinov, Konstantin Nagornov, Luca Fornelli, Kristina Srzentic, Daniel Ayoub

Pairing light and heavy chains in monoclonal antibodies (mAbs) using top-down (TD) or middle-down (MD) mass spectrometry (MS) may complement the sequence information on single chains provided by high-throughput genomic sequencing and bottom-up proteomics, ...

AMER CHEMICAL SOC2018

Dietary risk assessment of pesticides from vegetables and drinking water in gardening areas in Burkina Faso

Luiz Felippe De Alencastro, Edouard René Gilbert Lehmann

Vegetables and water samples have been collected around the lake of Loumbila in Burkina Faso. Pesticides resi- dues in food commodities were analyzed using a modified QuEChERS extraction method prior analysis on GC-MS and UPLC-MS/MS of 31 pesticides. Maxim ...

Elsevier2017

Impact Assessment of Pesticides Applied in Vegetable-Producing Areas in the Saharan Zone : the Case of Burkina Faso

Edouard René Gilbert Lehmann

The present thesis aimed at characterizing the extent of the pesticide contamination and resulting impacts on the environment and the human health in market garden-ing areas in Burkina Faso. Analytical procedures were developed and validated for multi-clas ...

EPFL2017

New ionization and tagging methods for mass spectrometry

Xiaoqin Zhong

Mass spectrometry (MS) is an essential detection tool in bioanalytical chemistry owing to its exceptional selectivity and sensitivity, paired with rapid analyte identification and quantification. In this thesis, two classical MS and a newly developed ioniz ...

EPFL2017

Innovative and stable TiO2 supported catalytic surfaces removing aldehydes under UV-light irradiation

Juan Kiwi, Sami Rtimi

The present study reports the photocatalytic degradation of aldehydes using TiO2 impregnated polyester (PES) and glass fiber (GFT)-TiO2 addressing the photocatalytic degradation aldehydes (air-solid interface). The PES-TiO2 optical absorption was determine ...

Elsevier Science Sa2017

Object Detection with Active Sample Harvesting

Olivier Canévet

The work presented in this dissertation lies in the domains of image classification, object detection, and machine learning. Whether it is training image classifiers or object detectors, the learning phase consists in finding an optimal boundary between po ...

EPFL2017

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Assessment of water resource contamination by pesticides in vegetable-producing areas in Burkina Faso

Luiz Felippe De Alencastro, Edouard René Gilbert Lehmann, Jean-Jacques Stéphane Nfon Dibie, Morgan Fargues

2018

Fast real time and quantitative gas analysis method for the investigation of the CO2 reduction reaction mechanism

Andreas Züttel, Emanuele Moioli, Wen Luo, Robin Tobias Andreas Mutschler

AMER INST PHYSICS2018

Multiplexed Middle-Down Mass Spectrometry as a Method for Revealing Light and Heavy Chain Connectivity in a Monoclonal Antibody

Yury Tsybin, Natalia Gasilova, Laure Menin, Anton Kozhinov, Konstantin Nagornov, Luca Fornelli, Kristina Srzentic, Daniel Ayoub

AMER CHEMICAL SOC2018