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is Professor (Emeritus) at the University of Leeds in the UK, where, again, he worked with SEAL autoanalyzers. An AA3 instrument was employed at Leeds in a project to investigate the nature of atmospheric acid processing of mineral dusts in supplying bioavailable phosphorus to the oceans.
Explaining the reasoning behind the purchase of a new AA3 at Haifa University, Professor Krom says: “During a research cruise, it is necessary to analyse samples within a day to avoid changes in concentration due to preservation procedures.
“Typically we analyse 50-80 samples per day, so it is useful to useful to be able to analyse large numbers of samples automatically. However, the main reasons for choosing the SEAL AA3 were the precision, accuracy and low limits of detection that it provides.”
Commenting on this application for SEAL’s analysers, company President Stuart Smith said: “Many of our customers analyse nutrient levels in freshwater and marine water
samples, where high levels of nutrients are a concern because of increasing levels of algal blooms and eutrophication. However, Professor Krom’s work is very interesting because, in contrast, he is looking at extremely low levels, so it is very gratifying that our instruments are able to operate at both ends of the nutrient concentration spectrum.”
References
• Powley, H.R., Krom, M.D., and Van Cappellen, P. (2017) Understanding the unique biogeochemistry of the Mediterranean Sea: Insights from a coupled phosphorus and nitrogen model. Global Biogeochemical Cycles, 11; 1010-1031. DOI 10.1002/2017GB005648.
• Stockdale, A. Krom, M. D., Mortimer, R.J.G., Benning, L.G., Carslaw, K.S., Herbert, R.J., Shi, Z., Myriokefalitakis, S., Kanakidou, M., and Nenes, A., (2016) Understanding the nature of atmospheric acid processing of mineral dusts in supplying bioavailable phosphorus to the oceans. PNAS vol. 113 no. 51
Read, Share and Comment on this Article, visit:
www.labmate-online.com/article Certifi cation for Quality and Environment Management Announced
Systec has again been certifi ed for its environment management in accordance with DIN EN ISO 14001 and for its quality management in accordance with DIN EN ISO 9001. The relevant business areas were audited by TÜV Rheinland in an extensive audit.
This included an inspection carried out at the company itself by a team of auditors and inspectors to ensure that work processes complied with specifi c legislation and requirements. The company’s management has attached great importance to quality and environment management for many years now.
The TÜV Rheinland presented the certifi cates to Systec GmbH (Jan Hermes, QM & Regulatory Affairs Manager) at the end of December. Jörg Winkelmann, General Manager of Systec GmbH praised the commitment of all staff in this respect: “Ultimately, this pleasing result refl ects the high level of commitment shown by every member of staff.”
Further information can be found at
www.systec-lab.com/autoclaves 44837pr@reply-direct.com
Healthier Air in the Lab
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Halo is working 24/7 to clean the air in the lab. Once vapours are detected, Halo will capture them in Erlab’s proprietary carbon fi ltration technology.
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