Welcome to the April issue of EVISA's Speciation Newsletter !

One of the most often used arguments to explain the value for speciation analysis is the relationship between speciation and toxicity. It is clear, that different chemical species have different toxicity that cannot be assessed by simple elemental concentrations (see: Brief summary: Speciation and Toxicity). The first requirement for a contaminant in the environment to act as a toxin for an organism is that it can reach the organism. That part of the contaminant to which the organism is exposed (by ingestion, inhalation, injection, or skin contact) and that finally reaches the systemic circulation, is called the bioavailable fraction.

Current risk characterization in ecological risk assessment does not consider bioavailability of heavy metals, which highly depends on physicochemical properties of environmental media. The question is whether the bioavailable fraction can be easily predicted for different chemical species and target organisms within an environmental setting. It seems clear that the presence of organic material that can act as complexing compounds can alter the solubility and mobility of heavy metals in a contaminated soil. The question to be answered is, whether such complexed metals are bioavailable or not. A new study looking at the toxicity of lead for a bacterium in soil solution concludes that only the free dissolved lead is toxic while the part complexed with humic acid is not toxic for the bacterium (see the news below). We have seen other reports with contradicting results....


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.

Effect of dissolved humic acid on the bioavailability of lead from contaminated soil
Korean researchers found that humic acids can reduce the lead toxicity for bacteria in contaminated soil

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...

ICBIC17: 17th International Conference on Biological Inorganic Chemistry
Date: July 20,2015 - July 24,2015
Location: Beijing, China
April 20,2015 Early registration at reduced fee
May 10,2015 Submission of abstracts

CSI 2015: Colloquium Spectroscopicum Internationale
Date: August 30,2015 - September 3,2015
Location: Figueira da Foz, Portugal
May 11,2015 Submision of abstracts
May 29,2015 Notice of acceptance
June 30,2015 Early registration at reduced fee

Please do not hesitate to inform us in case that your conference related to speciation
analysis is missing in our Agenda.

63th ASMS Conference on Mass Spectrometry and Allied Topics
Location: St. Louis, MO, United States
Date: 31.05.2015 - 04.06.2015

ISABC13: 13th International Symposium on Applied Bioinorganic Chemistry
Location: Galway, Ireland
Date: 12.06.2015 - 15.06.2015

ICMGP 2015: 12th International Conference on Mercury as a Global Pollutant
Location: ICC JEJU (International Convention Center Jeju), Jeju, Korea (South)
Date: 14.06.2015 - 18.06.2015

HPLC 2015: 42nd International Symposium on High Performance Liquid Phase Separations & Related Techniques
Location: Geneva, Switzerland
Date: 21.06.2015 - 25.06.2015

Isotopes 2015: Isotope effects accross disciplines
Location: Jerusalem, Israel
Date: 21.06.2015 - 26.06.2015

2015 NEMC: National Environmental Monitoring Conference
Location: Hyatt Regency in Chicago, IL.
Date: 13.07.2015 - 17.07.2015


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 !


Umeå University: Mercury Biogeochemistry
Umea University, Department of Chemistry has an open position for a PhD student in the field of mercury biogeochemistry.




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 280 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 2700 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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