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Reference : UMR7294-SYLJOV-004
Workplace : MARSEILLE 09
Date of publication : Friday, November 20, 2020
Type of Contract : FTC Scientist
Contract Period : 25 months
Expected date of employment : 1 January 2021
Proportion of work : Full time
Remuneration : Between € 3,881.29 ans € 4,056.74 gross monthly
Desired level of education : PhD
Experience required : 5 to 10 years
The proposed position focuses on the study of plastic debris and its additives in a surface water/sediment continuum in the Bay of Marseille, in order to provide new insights on sources, fate and behavior of plastic debris and their additives content. The successful candidate will address the following questions:
- What are the sources of plastics and additives in the Bay of Marseille?
- Is sediment a well for plastic debris?
- Is additive contamination to living organisms in the sediment proportional to the presence of plastic debris?
- Are benthic plastic debris a source of additives for the water column and benthic species?
The candidate will have to conduct parallel field and laboratory experiments.
In the field:
- Organize and manage quarterly water and sediment sampling campaigns in the Bay of Marseille
- Count and characterize plastic debris in samples collected using a Direct InfraRed Laser (LDIR). Analytical developments are expected for this instrument, in particular for the sample preparation step
- Determine the main families of additives in water, sediment, demersal fish, polychaetas
In the laboratory:
- Characterize the role of the main sedimentary biogeochemical processes on the degradation kinetics of plastic particles
- Quantify the rates of release of additives from microplastics to sediment pore water
- Quantify additive flux from the sediment to the water column
- Measure the surface alteration of plastic debris
Analytical chemistry skills applied to the analyses of organic contaminants in the marine environment (routine development and analysis) are expected, including solid phase extraction, accelerated solvent extraction, liquid and gas chromatography, knowledge of the main biogeochemical processes in sediment. Another experience required concerned knowledge of the biological sediment organisms. Strong field experience is also expected, in addition to laboratory experimental management skills. Other skills essential for project management are required: writing reports and scientific articles, ability to meet deadlines, excellent interpersonal communication, trainee supervision.
The successful candidate will work under the scientific responsibility of Richard Sempéré, in close collaboration with the "organic contaminants" group within the marine environmental chemistry team of the MIO, Luminy campus.
Constraints and risks
The position involves sea boarding, and risks related to the handling of chemicals.
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