Dear Subscriber !

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

It is already well known that the toxicity of arsenic depends on its speciation with arsenite being more toxic than arsenate. For most people the main exposure routes are ingestion of contaminated drinking water or food and inhalation (mostly occupational exposure). Due to the low permeability of arsenate the exposure route via dermal absorption has been considered to be minimal. A new study now shows that dermal absorption of arsenic also strongly depends on its speciation. The uptake rates of different arsenic species differs by a factor of 60 and therefore have to be considered for valuable risk assessment. In view of the fact that arsenite shows a uptake rate 29 times higher than arsenate and also is a major species in many paddy rice fields, working in those fields may become a major health threat.

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.

Uptake of arsenic through human skin depends strongly on its speciation
Dermal uptake of arsenic has been underestimated up to now based on low permeability of arsenate. A new study finds that uptake of arsenic as arsenite or dimethylarsinic acid is a factor of 29 and 59 higher than that of arsenate.

High Accumulation of Selenium in Wheat Grains
Wheat is able to accumulate Se at higher levels than previously recognised. Interestingly, even when the plant is exposed to exceedingly high concentrations of inorganic Se, the Se taken up by the roots is extensively biotransformed into a variety of organoselenium compounds, with Selenomethionine being the main compound.


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.

As 2010: 3rd International Congress on Arsenic in the Environment
Location: Tainan, Taiwan
Date: 17.05.2010 - 21.05.2010

58th ASMS Conference on Mass Spectrometry
Location: Salt Lake City, UT
Date: 23.05.2010 - 27.05.2010

5th Nordic Conference on Plasma Spectrochemistry
Location: Loen, Norway
Date: 06.06.2010 - 09.06.2010

Goldschmidt 2010: Earth Energy and the Environment
Location: Knoxville, Tennessee
Date: 13.06.2010 - 18.06.2010

Gordon Research Conference: Environmental Bioinorganic Chemistry: Elements in the Environment, from Prokaryotes to Planet
Location: Salve Regina University Newport, RI, USA
Date: 13.06.2010 - 18.06.2010

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


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 !


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.




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.



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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