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Welcome to the November issue of EVISA's Speciation Newsletter !
This month the focus of the newsletter is on arsenic speciation analysis. Human exposure to arsenic can be monitored via analysis of urine. Since the toxicity of arsenic is highly dependent on its speciation, meaningful risk analysis requires speciation analysis rather than total element determination. While HPLC-ICP-MS has been used for such analysis for more than 30 years, there is still room for improvement. Researcher from Spain were motivated to overcome some of the shortcomings by
redesigning the procedure for the separation of six species (see the news below).
The sample preparation for urine was very simple and limited to ten-fold dilution. Unfortunately, the sample pretreatment for solid samples is much more complex. For such samples species have to be quantitatively extracted without influencing the speciation. Whether this can be achieved with ultrasonic-assisted extraction has been investigated by a group of Chinese researchers (see the news below).
Human exposure to arsenic is mainly via consumption of drinking water or contaminated food. Unfortunately, rice is often more significantly contaminated than other cereals. Researchers from the University of Sheffield (UK) now developed a new way of cooking rice to remove arsenic without reducing its nutritional value (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.
A highly selective and robust HPLC-ICP-MS arsenic speciation method for urine analysis
A group of Spanish researchers is proposing to use ammonium acetate as mobile phase for the speciation analysis of arsenic in urine by HPLC-ICP-MS.
 more
Transformation of arsenic species during ultrasonic sample pretreatment
A group of Chinese researchers now studied the transformation kinetics of different arsenic species in aqueous solution by ultrasonic treatment in order to select optimum conditions for efficient extraction with minimum species transformation.
more
New way of cooking rice removes arsenic and retains mineral nutrients, study shows
Cooking rice in a certain way removes over 50 per cent of the naturally occurring arsenic in brown rice, and 74 per cent in white rice, according to new research.
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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
Montanuniversität Leoben, Austria: TecEUS – Technology-critical Elements in Urban Spheres
Montanuniversität Leoben is offering a PhD position with the topic: Technology-critical elements in urban spheres’ in the field of analytical chemistry with a strong focus on mass spectrometry in a young
team within a highly transdisciplinary FWF-funded project.
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Europe: Mercury Biogeochemistry
The EU H2020 programme is financing a Marie-Curie training network on 'mercury biogeochemistry' over the next four years (2020-2023). A total of 15 PhD positions are open throughout Europe on a variety of topics, some including ICPMS or mass spectrometry.
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Postdoctoral
National Institute of Chemistry, Ljubljana: Laser ablation- ICP-MS
A Postdoctoral Position is open in the Department of Analytical Chemistry at the National Institute of Chemistry, Slovenia.
more
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 290 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 http://www.speciation.net with your username and password and edit your user account.
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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 2020 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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