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Welcome to the October issue of EVISA's Speciation Newsletter !
Technetium is the lightest element with only radioactive isotopes. Naturally occurring technetium forms from spontaneous fission in uranium and thorium ores or from neutron capture in molybdenum ores. All available technetium is synthetically produced. Technetium-99 (99Tc) is a notable human-made radionuclide, released mainly through nuclear weapons development and nuclear power production. Its nuclear isomer, technetium-99m (99mTc), is widely used in diagnostic imaging, with about 30 million procedures annually. Although the amount released is small, the extensive use of 99mTc-based tracers—about 85% of all scintigraphic exams—requires monitoring its discharge into freshwater systems.
Monitoring its environmental release via radioanalytical methods is challenging, needing large samples, laborious preconcentration, and long measurement times. Advances in ICP-MS over recent decades offer high sensitivity, matrix tolerance, and sample throughput. An international research team has developed a cutting-edge method to quantify technetium-99 (99Tc) in wastewater. This method combines manual sample preparation with automated online pretreatment and analyte separation, enhanced by ICP-MS's sensitive detection.
Using 110.35 mL of wastewater, this method achieved a preconcentration factor of 4615, resulting in a detection limit of 0.7 fg/kg. The team successfully determined the 99Tc concentration in hospital wastewater (see the news below).
Selenium is essential, making dietary source identification crucial. It occurs naturally in soil, affecting plant-based food content. Organic selenium species, like selenoamino acids, are notable for their antioxidant properties. Selenoneine, a selenium analogue of the sulphur antioxidant ergothioneine, is particularly potent but mainly found in certain marine fish. Researchers from the University of Graz discovered high levels of selenoneine in the edible mushroom Boletus edulis (see the news below).
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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 information 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.
Quantification of Technetium-99 in Wastewater Using Online Preconcentration and Anion-Exchange Chromatography Coupled with Inductively Coupled Plasma-Mass Spectrometry
An international team of researchers has developed a cutting-edge method for quantifying technetium-99 (99Tc) in wastewater. This novel approach combines manual sample preparation with automated online sample pretreatment and analyte separation, enhanced by the sensitive detection capabilities of inductively coupled plasma-mass spectrometry (ICP-MS).
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Discovery of Selenoneine in Boletus edulis: A Potential Terrestrial Source of a Potent Antioxidant
Researchers from the University of Graz found high amounts of the health-relevant antioxidant selenoneine in the edible mushroom Boletus edulis.
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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.
5th ToFCON
Date: November 19, 2024 - November 19, 2024
Location: Berlin, BAM, Adlershof
October 14, 2024 Submission of abstracts
ANAKON 2025
Date: March 10, 2025 - March 13,2025
Location: Leipzig, Germany
November 15, 2024 Notification of acceptance
December 1, 2024 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.
ISC 2024: 34th International Symposium on Chromatography
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Location:
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Liverpool, UK
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Date:
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06.10.2024 - 10.10.2024
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SciX 2024
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Location:
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Raleigh Convention Center | Raleigh, NC
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Date:
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20.10.2024 - 25.10.2024
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11th RAFA: Recent Advances in Food Analysis
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Location:
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Prague, Czech Republic
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Date:
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05.11.2024 - 08.11.2024
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UFDIM 2024: Ultrafast Dynamic Imaging of Matter Conference 2024
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Location:
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DESY Hamburg
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Date:
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18.11.2024 - 20.11.2024
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5th ToFCON
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Location:
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Berlin, BAM, Adlershof
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Date:
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19.11.2024 - 19.11.2024
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EMEC 24: European Meeting on Environmental Chemistry
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Location:
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Alicante, Spain
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Date:
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26.11.2024 - 29.11.2024
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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
PTB Braunschweig: Doctoral candidate in chemistry or biochemistry
At their Braunschweig site, PTB is looking to fill the following position in Department 3.2 (Biochemistry):
Doctoral candidate in chemistry or biochemistry
Remuneration Group 13 TVöD Bund ○ Three-year fixed term ○ Part-time (33.15 hours/week)
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Postdoctoral
Other
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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 300 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 2800 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 https://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 https://speciation.net or contact info@speciation.net
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Copyright 2024 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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