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Dear Subscriber !
Welcome to the May issue of EVISA's Speciation Newsletter.
Selenium is an essential element for animals and humans, but its physiological nature is ambivalent. It can cause disease by deficiency, but it is toxic at levels less than an order of magnitude above those required for health. In this sense it is a classical example of Paracelsus' paradigm, "Everything is toxic, depending on the concentration". Acting as an antioxidant and antagonist against some toxic heavy metals such as mercury, the World Health Organization and other organizations from the United States recommend a daily intake of selenium between 30 and 55 micrograms for adults.
The excitement about selenium began with evidence that people with very low selenium in their diet are at an increased risk for cancer that could be reduced by additional selenium intake via supplements. Since then some companies that sell such supplements claim that higher doses of selenium have a range of health benefits, including cancer prevention. One of the questions is, in which form should the selenium be present in the supplement. Most of the supplements nowadays are yeast products, where the yeast was fed with inorganic selenium and has metabolized the selenium to a variety of organoselenium compounds including selenomethionine. Analytical characterization of the supplements requires some standards and reference materials for the identification and quantification of such selenium species. Now LGC, a producer of such standards and reference materials announced the availability of a new selenium standard for the quality control of foodstuffs and supplements (see the News section).
However, health benefits from selenium intake above the recommended level of 30-55 µg/day are rather questionable. A new report reviewing all studies and trials concludes that there is no convincing evidence that taking high doses of selenium can prevent cancer (see the News section).
The study of the role and interaction of metals and metalloids in biological systems is one of the main topics of the new research area of "metallomics" that will be discussed at the METALLOMICS 2011 symposium, taking place next month in Münster, Germany. Scientists across the spectrum of metallomics including biologists, chemists, physicians and clinical scientists from industry, government, and academia, doctoral and graduate students are invited and strongly encouraged to take part in this scientifically exciting multidisciplinary event.
The scientific program of the METALLOMICS 2011 is available on the symposium web site. Please feel invited to join us for these stimulating events. Last minute posters can still be accepted !
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NEWS
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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.
Review: Selenium doesn't prevent cancer
There is no convincing evidence that taking high doses of selenium - a popular dietary supplement - can prevent cancer, according to a new review.
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New reference materials for the characterisation of selenium-enriched food products
LGC, the UK’s designated National Measurement Institute for chemical and bioanalytical measurement, is supporting the food industry by producing a range of reference materials for the characterisation of selenium in bio-fortified foods. The recent development of an isotopically enriched selenomethionine reference material supports public safety.
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EVENTS
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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...
TraceSpec 2011: 13th Workshop on Progress in Trace Metal Speciation for Environmental Analytical Chemistry
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Location:
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Palais Beaumont, Pau, France
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Date:
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18.05.2011 - 20.05.2011
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ICAS 2011: IUPAC International Congress for Analytical Sciences
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Location:
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Kyoto, JPN
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Date:
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22.05.2011 - 26.05.2011
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Einführung in die Elementspeziesanalytik
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Location:
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Helmholtzzentrum für Umweltforschung - UFZ, Leipzig
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Date:
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25.05.2011 - 27.05.2011
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CanBIC-3: 3rd Georgian Bay International Conference on Bioinorganic Chemistry
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Location:
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Parry Sound, Ontario, Canada
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Date:
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31.05.2011 - 03.06.2011
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59th ASMS Conference on Mass Spectrometry
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Location:
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Denver, CO
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Date:
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05.06.2011 - 09.06.2011
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METALLOMICS 2011: 3rd International Symposium on Metallomics
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Location:
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Münster, Germany
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Date:
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15.06.2011 - 18.06.2011
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TEF-4: 4th International IUPAC Symposium for Trace Elements in Food
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Location:
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King's College in Aberdeen, Scotland
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Date:
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19.06.2011 - 22.06.2011
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AIRMON 2011: The 7th International Symposium on Modern Principles of Air Monitoring and Biomonitoring
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Location:
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Loen, Norway
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Date:
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19.06.2011 - 23.06.2011
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11th International Symposium on Metal Ions in Biology and Medicine
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Location:
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Homerton College, University of Cambridge, UK
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Date:
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20.06.2011 - 23.06.2011
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Frontiers in Environmental Geoscience 2011
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Location:
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Aberystwyth, Wales, UK
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Date:
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21.06.2011 - 24.06.2011
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VACANCIES
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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
Postdoctoral
Other
LGC Teddington, UK: Researcher, Speciation Analysis
The Chemical Measurement & Calibration Team of LGC is looking for a researcher for the development and validation of species-specific IDMS methodologies for the accurate quantification of polybrominated flame retardants in whole water in support of the European Water Framework Directive.
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Nestlé Research Center (NRC) located near Lausanne: Research Scientist in Mineral Analysis
To support its research strategy, the Quality & Safety Department at the NRC is seeking a:
Research Scientist in Mineral Analysis
who will work within the Functional Ingredients Analysis group.
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DIRECTORY
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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 270 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.
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LINKS
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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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This issue of evisa's Speciation Newsletter has been sent to you by EVISA, because you have registered for this service. If you would like to modify your user account, please log-in on EVISA's web portal at http://www.speciation.net with your username and password and edit your user account.
Please feel free to pass this Speciation Newsletter to others who may benefit from EVISA. If you have any contributions or suggestions, please send these to editors@speciation.net.
This is a post-only e-mail. Please do not reply to this message. For all inquiries, problems or suggestions regarding this service, please visit http://www.speciation.net or contact info@speciation.net
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Copyright 2011 EVISA
All rights reserved. Any unauthorized use, reproduction, or transfer of this message or its contents, in any medium, is strictly prohibited. No part of this publication may be reproduced, stored in a retrieval system or transmitted in any form or by any means, electronic, mechanical, photocopying, recording or otherwise, without the prior written permission of EVISA.
Disclaimer
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.
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