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Post-doc in SenseOCEAN - LEGOS - Toulouse (France)

LEGOS is a joint venture between CNRS, IRD, CNES and University Paul Sabatier, one of the components of Observatory Midi-Pyrénées in Toulouse, France. It comprises around 125 people, among which 43 scientists and 28 administrative and technical staff.

This multidisciplinary research unit is involved in the study of the environment centred on earth geodesy and physical and biogeochemical oceanography, using in-situ oceanographic and remotely-sensed data and modelling tools.

Post-doc work
Within the senseOCEAN project, the post-doc fellow will have to work on the continuing development of a silicate and/or phosphate electrochemical sensor. The existing prototypes include either integrated microdevices in silicon technology or homemade macro and ultramicro-electrodes. As silicate and phosphate are non-electroactive species, their detection requires a pre-oxidation of molybdenum metallic electrode in order to form silico and phosphomolybdic complexes. These complexes are then transferred into a detection cell where cyclic voltammetry is performed using macro and ultramicroelectrodes. The detection with 2 electrodes with different sizes allows applying a calibrationless method based on the 2 different diffusion laws. The different parameters such as oxidation of molybdenum, detection of complexes, solution transfer from one cell to another and cleaning of the whole circuit have to be characterized with the prototype using autonomous electronics. Further testing of the sensors performance in the lab and in situ will have to be carried out, aiming at integration on autonomous platforms such as profiling floats, moorings.

Required competences
Applicants should hold a recent PhD in analytical electrochemistry and/or analytical chemistry in marine systems. The applicant should be familiar with other technological domains proper to instruments development meaning mechanics, electronics, signal treatment. Appointment will be for a 24 months duration and may start in spring 2014, no later than April 1St, 2014. Annual gross salary will around 30 000 € (monthly net salary: ~ 2000 € according to experience). The applicants should be fluent in english.

Letters of application, a C.V. with complete list of publications, a short statement of research interests and the name of three referees should be sent to Dr Véronique Garçon or Dr Carole Barus (see address below):

Address of the laboratory and contacts:

Laboratoire d’Etudes en Géophysique et Océanographie Spatiales, 18 Avenue Edouard Belin, 314401 Toulouse Cedex 9

Dr Véronique Garçon (
Tel : +33 5 61 33 29 57
Dr Carole Barus (
Tel: +33 5 61 33 29 13


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