PhD analytical Chemistry (M/F)
New
- FTC PhD student / Offer for thesis
- 36 mounth
- Doctorate
This offer is available in English version
This offer is open to people with a document recognizing their status as a disabled worker.
Offer at a glance
The Unit
Laboratoire Avancé de Spectroscopie pour les Interactions, la Réactivité et l'Environnement
Contract Type
FTC PhD student / Offer for thesis
Working hHours
Full Time
Workplace
59655 VILLENEUVE D ASCQ
Contract Duration
36 mounth
Date of Hire
01/10/2026
Remuneration
2300 € gross monthly
Apply Application Deadline : 20 March 2026 23:59
Job Description
Thesis Subject
Tracking radical species in oxidative water treatment processes
Oxidative treatments are commonly used in water treatment, either for disinfection or micropollutant degradation. However, the oxidants are mostly consumed by the organic matter present in water and lead to the unintended generation of so-called disinfection by-products (DBPs) which pose health risks. Dissolved organic matter is ubiquitous in water resources; this complex matrix is composed of natural and anthropogenic complex macromolecules. From soil studies, it is well known that stable radical species are ubiquitous in organic matter solid extracts while those species are poorly described in aqueous matrices. The project aims to characterize the radical species from aquatic organic carbon sources, determining the conditions of their formation as well as their structure and stability. The transformation or formation of extra species during oxidative water treatment processes will be studied varying different parameters, such as type of oxidant and dosage, quantity of halogens, pH, dissolved oxygen to fully assess and understand the formation of radical species.
The formation and stability of radical species will be investigated using electron paramagnetic resonance (EPR) spectroscopy, a magnetic resonance technique analogous to nuclear magnetic resonance (NMR) but specifically suited to the detection of paramagnetic species (organic radicals, transition-metal ions, etc.). Transient radical species can be trapped using nitroxides (spin trapping) or detected through the rapid-scan mode, which enables the acquisition of spectra with significantly higher speed and sensitivity than conventional scanning methods. This approach markedly improves the signal-to-noise ratio and provides enhanced temporal resolution, which is essential for monitoring short-lived radical species or fast reaction processes. Advanced techniques such as pulsed EPR may also be implemented on the Infranalytics platform (FR-2054-CNRS). First performed on natural organic matter well characterized extracts (IHSS), the study will be performed on real water resources.
Your Work Environment
This thesis project will be performed in LASIRE laboratory (UMR CNRS 8516 - lasir.cnrs.fr) in PCE and PMSM teams - Lille University. Apparatus from Chevreul Institut and Infranalytics will be available for experiments.
Compensation and benefits
Compensation
2300 € gross monthly
Annual leave and RTT
44 jours
Remote Working practice and compensation
Pratique et indemnisation du TT
Transport
Prise en charge à 75% du coût et forfait mobilité durable jusqu’à 300€
About the offer
| Offer reference | UMR8516-JUSCRI-009 |
|---|---|
| CN Section(s) / Research Area | Physical chemistry, theoretical and analytic |
About the CNRS
The CNRS is a major player in fundamental research on a global scale. The CNRS is the only French organization active in all scientific fields. Its unique position as a multi-specialist allows it to bring together different disciplines to address the most important challenges of the contemporary world, in connection with the actors of change.
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