Quantitative mapping of toxic metals on the submicron-scale in cell-mineral aggregates formed by iron mineral precipitating and dissolving bacteria

PhD Thesis in Biogeosciences / Environmental Sciences

The research group for analytical microscopy in Environmental- and
Biogeoscience at the Institute for Geosciences at the University of
Tuebingen is currently looking for a motivated PhD student working on

“Quantitative mapping of toxic metals on the submicron-scale in
cell-mineral aggregates formed by iron mineral precipitating and
dissolving bacteria”.

In the environment, toxic heavy metals are often bound to iron-minerals
and to organic matter produced by microorganisms. Understanding of the
bonding mechanisms is crucial for assessing potential remobilization of
toxic heavy metals. This will be tackled at the submicron scale by
advanced analytical microscopy approaches.

The proposed interdisciplinary research project aims at identifying
mechanisms and quantifying amounts of toxic trace metal bonding to cell
Fe-mineral aggregates on the submicron and micron scale. Therefore,
synchrotron-based techniques such as chemically sensitive tomography
with 100 nm resolution based on scanning transmission X-ray microscopy
(STXM) shall be developed and optimized further. Additionally, in a
novel approach confocal laser scanning microscopy (CLSM) will be applied
and optimized for up-scaling the high-resolution STXM data to
environmentally relevant spatial scales such as biofilms in the

We offer a PhD position in a young and interdisciplinary, international
team of geomicrobiologists and (bio-)geochemists working with state of
the art synchrotron techniques, electron microscopy and other analytical
microscopies. The position provides an opportunity to establish own
ideas, creativity and self-responsibility. The candidate will have the
opportunity to learn, use and to further develop cutting-edge analytical
microscopy techniques such as synchrotron-based STXM, electron
microscopy, and CLSM. Candidates will also have the possibility to
practice and improve their skills to plan/perform laboratory
experiments, to analyze the data, to discuss and to present the results
in a friendly atmosphere.

Candidates should have a background in environmental sciences,
geo-ecology, bio-geosciences, chemistry or physics and like to work as
team players in a highly interdisciplinary field. Technical skills, a
weakness for applied physics and some programming experience (e.g.
LabView, Matlab, IDL) would be quite beneficial. Applicants should have
good communication skills and be highly motivated and committed to
pursuing interdisciplinary research particularly focusing on
environmental issues. Good computer- and language skills (English) are
The studentship will be funded by the DFG. The candidate will be
employed by the University of Tuebingen at TVL E13 (50%). The start date
of the 3-year contract is December 2010 or as soon as possible
thereafter. We particularly encourage female applicants to apply for
this position. Disabled persons will be preferred in case of equal

Applications should be sent by email before 31-Oct-2010 to:

Views: 21

Tags: TINC-Job, monitor


You need to be a member of The International NanoScience Community to add comments!

Join The International NanoScience Community

Welcome - about us

Welcome! Nanopaprika was cooked up by Hungarian chemistry PhD student in 2007. The main idea was to create something more personal than the other nano networks already on the Internet. Community is open to everyone from post-doctorial researchers and professors to students everywhere.

There is only one important assumption: you have to be interested in nano!

Nanopaprika is always looking for new partners, if you have any idea, contact me at editor@nanopaprika.eu

Dr. András Paszternák, founder of Nanopaprika

Publications by A. Paszternák:

Smartphone-Based Extension of the Curcumin/Cellophane pH Sensing Method

Pd/Ni Synergestic Activity for Hydrogen Oxidation Reaction in Alkaline Conditions

The potential use of cellophane test strips for the quick determination of food colours

pH and CO2 Sensing by Curcumin-Coloured Cellophane Test Strip

Polymeric Honeycombs Decorated by Nickel Nanoparticles

Directed Deposition of Nickel Nanoparticles Using Self-Assembled Organic Template,

Organometallic deposition of ultrasmooth nanoscale Ni film,

Zigzag-shaped nickel nanowires via organometallic template-free route

Surface analytical characterization of passive iron surface modified by alkyl-phosphonic acid layers

Atomic Force Microscopy Studies of Alkyl-Phosphonate SAMs on Mica

Amorphous iron formation due to low energy heavy ion implantation in evaporated 57Fe thin films

Surface modification of passive iron by alkylphosphonic acid layers

Formation and structure of alkylphosphonic acid layers on passive iron

Structure of the nonionic surfactant triethoxy monooctylether C8E3 adsorbed at the free water surface, as seen from surface tension measurements and Monte Carlo simulations

Next partner events of TINC

We are Media Partner of: