met-jobs@lists.reading.ac.uk
To subscribe or unsubscribe via the World Wide Web, visit
http://www.lists.rdg.ac.uk/mailman/listinfo/met-jobs
or, via email, send a message with subject or body 'help' to
met-jobs-request@lists.reading.ac.uk
You can reach the person managing the list at
met-jobs-owner@lists.reading.ac.uk
When replying, please edit your Subject line so it is more specific
than "Re: Contents of Met-jobs digest..."
Please note that attachments can be viewed on the Met-Jobs archive page at http://www.lists.rdg.ac.uk/archives/met-jobs/
Today's Topics:
1. PhD position in Atmospheric Chemistry at INERIS (France),
OOSOA: On-line, Off-line, Secondary Organic Aerosol
(alexandre albinet)
----------------------------------------------------------------------
Message: 1
Date: Mon, 10 Mar 2014 08:48:59 +0100
From: alexandre albinet <alexandre.albinet@gmail.com>
Subject: [Met-jobs] PhD position in Atmospheric Chemistry at INERIS
(France), OOSOA: On-line, Off-line, Secondary Organic Aerosol
To: met-jobs@lists.reading.ac.uk
Message-ID:
<CAKvMDdDDCG5ogBSGzwAqsdGoSMZBxQpmtOxXPau_e9rV6kFKpw@mail.gmail.com>
Content-Type: text/plain; charset="iso-8859-1"
INERIS (France), the French National Institute for Industrial Environment
and Risks offers a
*PhD position in Atmospheric Chemistry, OOSOA: On-line, Off-line, Secondary
Organic Aerosol*
http://www.ineris.fr
*Contacts*
*Alexandre ALBINET*
*Olivier FAVEZ*
INERIS, DRC/CARA/CIME (France)
alexandre.albinet@ineris.fr, +33-3-44-55-64-85
olivier.favez@ineris.fr, +33-3-44-55-69-49
*Keywords*
Air quality; Atmospheric chemistry; Aerosol; Sources; Secondary organic
aerosol (SOA); molecular "tracers".
*Context and objectives*
Impact of particulate matter (PM) (aerosols) on air quality, and so on
health, is now well recognized. However, due to their wide emission sources
and to the complexity of their (trans)-formation processes in the
atmosphere, the implementation of actions, in order to decrease the ambient
air PM concentration levels, is dependent of a better knowledge about the
origin and the behaviour of the pollutants emitted by human activities. If
aerosols are formed of a complex mixture, organic matter (organic aerosol,
OA) represents a large fraction of the total mass of the fine particles in
the atmosphere (from 20 to 90 % in the low troposphere). OA sources,
formation processes and chemical composition still remain quite
unrecognized. Carbonaceous species are commonly separated according to
their introduction mode in the particulate phase. Organic compounds
directly emitted in particulate phase in ambient air are defined as primary
organic aerosol (POA). Particulate organic species from oxidation reactions
in gaseous phase of volatile or semi-volatile organic compounds (VOCs,
SVOCs) and transfer mass processes of the by-products into the aerosol form
the secondary organic aerosol (SOA). The knowledge of SOA is essential on a
climatic or sanitary point of view because it could constitute about 80 to
90 % of total OA in some locations. If primary emission could be
controlled, secondary sources, influenced by biogenic emissions (and also
anthropogenic) and by the photochemistry, are difficult to regulate. In
this context, the discrimination of POA and SOA sources is fundamental.
The main objective of this PhD work is to get an extensive description and
evaluation of the OA sources (POA and SOA) using the combination of
"off-line" aerosol chemical speciation (POA and SOA molecular "tracers",
major and trace inorganic species) and real time aerosol chemical
characterization by "on-line" instrumentation (Tof-ACSM, SMPS,
multi-wavelengths Aethalometer...) on a long term basis (>1 year). The
synergism of both aerosol characterization methodologies will be obtained
through the statistical data analysis using a composite positive matrix
factorization (PMF, receptor model): PMF? OO (<< off-line >>, << on-line >>)
and will bring a comprehensive source apportionment of the entire fine
aerosol fraction and insights onto secondary formation processes.
Another originality of the work is the accuracy evaluation of recently
proposed and newly identified SOA molecular "tracers" from photo-oxidation
processes of PAHs (polycyclic aromatic hydrocarbons) and biomass burning
intermediates.
This will be done by combining complementary off-line/on-line approaches
during experiments in controlled conditions performed in laboratory and/or
at quasi actual size; laboratory reactivity experiments and field studies.
The work will particularly focus on the biomass burning source (residential
heating) as it is an increasing renewable energy source used in Europe.
Moreover, the SOA formation from this source is still largely unknown.
*Candidate profile*
- Master Environmental chemistry, atmospheric chemistry, and/or
analytical chemistry.
- Lab and field work interest.
- Knowledge in atmospheric physico-chemistry.
- Knowledge in analytical -chemistry (HPLC-Fluorescence/UV, GC-MS,
TD-GC-MS, LC-MS/MS).
- Computer knowledge and data analysis (Igor, PMF).
- Autonomy, adaptability, communication and writing abilities.
- Good English level
*Useful information*
*Place of PhD work*: INERIS (Verneuil-en-Halatte, France)= 60 % ;
EPOC-LPTC/University Bordeaux 1 (Talence, France)= 20 % ; LSCE (Saclay,
France) = 20 %
* PhD start*: September-October 2014
* To apply*: Send CV + letter of motivation before 30/04/2014.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: /archives/met-jobs/attachments/20140310/810e8b30/attachment.html
------------------------------
_______________________________________________
Met-jobs mailing list
Met-jobs@lists.reading.ac.uk
http://www.lists.rdg.ac.uk/mailman/listinfo/met-jobs
End of Met-jobs Digest, Vol 510, Issue 1
****************************************
