2010/6

Dear Subscriber !

Welcome to the June issue of EVISA's Speciation Newsletter.

Already last time, we talked about the role  of speciation in toxicity (see our brief summary on this topic) . We would like to come back to this issue, since unfortunately still a significant number of researchers working in the field of toxicology do ignore the great impact of speciation. This actually means that often the toxicity data produced is  meaningless, since the actual compound (species) being studied is not documented or even unknown.  Another often ignored fact in toxicity studies are dynamics during the study time. Often it is taken for granted that the compound dosed is also the compound being evaluated, ignoring the fact that the compound might interact with the studied system (e.g. cell culture etc.). Also very seldom analytical methodology is used during such test to verify that species composition and their concentrations are unaltered during the test period. Since a lot of chemicals are added e.g. for example as culture media (again very often not documented), interactions between the target compound and the studied system might lead to species conversion (e.g. by redox reactions, hydrolysis, complex formation) changing both the species being present (and therefore being studied) as well as their concentrations. As a result, such interactions might lead to biased toxicity data and therefore to wrong remediation strategies. As an example, please read the new study discussed in the EVISA News, comparing the toxicity of hexavalent and trivalent chromium to freshwater algae (see the News below).
NEWS | EVENTS | VACANCIES | DIRECTORY | LINKS
NEWS

EVISA is keeping you updated  with what is going on in speciation analysis. In this section you will find news about the most current research results, about trends, legal issues and informations from manufacturers in the field of speciation analysis.

With all the links to further information and publications the News archive is a valuable collection of "hot topics" in speciation analysis. We continuously update even former news with new links and information so that all news are actual all the time.

Chromium(VI) much more toxic than chromium(III): At least for freshwater algae a paradigm to revise?
An international team of researchers is challenging the widespread accepted finding that hexavalent chromium is much more toxic than trivalent chromium. At least for freshwater algae they found the contrary.
more

New OSHA Hexavalent Chromium Requirement
The Occupational Safety & Health Administration (OSHA) released a press release on Friday, May 21st, regarding hexavalent chromium and worker knowledge of exposure.
more

China: Inorganic Arsenic in Rice - An Underestimated Health Threat ?
Inorganic arsenic was found to be the predominant arsenic form in rice from China. Due to the high consumption of rice, arsenic intake for the Chinese population through rice is higher than from drinking water. more
EVENTS

With a list of about 50 current entries EVISA is informing you about interesting events and keeps you updated with their deadlines. By consulting our list of deadlines you won't miss the opportunity for early registration at reduced fee or the chance to submit your contribution in time.
 more infos...
 
Please do not hesitate to inform us in case that your conference related to speciation analysis is missing in our Agenda.
HPLC 2010: 35th International Symposium on High Performance Liquid Phase Separations and Related Techniques
Location: The Hynes Convention Center & Sheraton Boston Hotel, Boston, MA
Date: 19.06.2010 - 24.06.2010
more

EuroBic 10: 10th European Biological Inorganic Chemistry Conference
Location: Aristotle University of Thessaloniki, Thessaloniki, Greece
Date: 22.06.2010 - 26.06.2010
more

BioMetals 2010
Location: Tucson, Arizona
Date: 25.07.2010 - 30.07.2010
more

ICCST-11: 11th International Conference on the Chemistry of Selenium and Tellurium
Location: Oulu, Finland
Date: 01.08.2010 - 06.08.2010
more

NEMC 2010: National Environmental Monitoring Conference
Location: Hyatt Regency Capitol Hill, Washington, DC
Date: 09.08.2010 - 13.08.2010
more

36th International Symposium on Environmental Analytical Chemistry
Location: Rome, Italy
Date: 05.09.2010 - 09.09.2010
more



VACANCIES

EVISA provides information about open positions for Ph.D. students, PostDocs and permanent staff in the field of speciation. Looking to fill a vacancy or needing a new career challenge? Either way this service is FREE. Many laboratories and research facilities (from Greenland to Crete) have already found their highly educated stuff through this service by EVISA. If you would like to post an open position here, please contact us at info@speciation.net !

Doctorates

UMCES - Chesapeake Biological Laboratory in Solomons, MD; Lanthanide uptake in aragonite and calcite
Three years of NSF funding for a Ph.D. student is immediately available at the UMCES - Chesapeake Biological Laboratory in Solomons, MD. Focus of the research is lanthanide uptake in aragonite and calcite, and its use in ocean acidification studies.
more

University of Liverpool: Iron speciation and humic substances in seawater
It is proposed that the student in this project makes a detailed study of the chemical speciation of iron and the concentration of iron-binding HS. Previous work has demonstrated the presence these ligands in Liverpool Bay and the Irish Sea. We will now concentrate on the estuary of the Mersey as a source of these ligands. The work may be extended to the Irish Sea. Samples will be collected during cruises with the University research vessel or the Environment Agency.
more


Postdoctoral

Umea University, Sweden: Mercury Biogeochemistry
We now seek a postdoctoral researcher to conduct fundamental studies on mercury-sulfide chemistry in controlled model systems.
more


Other

LGC, UK: Science Leader – Inorganic and Isotope Ratio Analysis
LGC is searching for an experienced research scientist to lead the Inorganic & Isotope Ratio Analysis group within its Chemical Measurement & Calibration team.
more

LGC, UK: Science Leader - Speciation Analysis
LGC is searching for an experienced research scientist to lead the Speciation Analysis group within its Chemical Measurement & Calibration team.
more

LGC, UK: Researcher - Speciation Analysis
Due to recent growth, LGC is searching for a Researcher to join the Speciation Analysis group within its Chemical Measurement & Calibration team.
more

LNE (France): Researcher in Speciation Analysis
LNE is seeking for its Biomedical and Inorganic Chemistry Department a Researcher in the Field of Speciation Analysis for a permanent position.

more

GE Global Research - Niskayuna, NY: Analyst
You will work with GE Global Research and GE business technology teams to execute research projects using elemental analysis and related methods to study the composition of GE materials systems, including metals, ceramics, composites, polymers, and biomaterials.
more
DIRECTORY

EVISA's directory of scientist is a versatile tool to facilitate contact with scientists in the field of speciation and related sciences. The directory is fully searchable for names, addresses, research topics etc.  You should bookmark this directory as an always up-to-date address book. (In order to hinder SPAM robots for collecting the E-mail accounts, we hide them in a special format).

More than 265 active scientists in the field of speciation analysis already joined the directory. Join this great directory that is extensively linked to all type of other information on this site, such as homepages, conferences and literature.

If your entry is still missing in this directory, please contact us at info@speciation.net.

more
LINKS

EVISA provides an easy access to external information. Our database contains more than 2100 links to relevant information from numerous top scientific resources spread over the whole Web. The database is searchable both via full-text and categories such as elements, type of species and type of information. We are permanently updating our links section.

If your web site is missing here, please e-mail your link information to info@speciation.net.

 
 
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No responsibility is assumed by the publisher for any injury and/or damage to persons or property as a matter of products liability, negligence or otherwise, or from any use or operation of any methods, products, instructions or ideas contained in the material herein. The Newsletter represents only the opinion of the authors and does not necessarily reflect the opinion of the European Community. The European Community is not responsible for any use that might be made of the information provided.