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ACS News Service Weekly PressPac -- Sept. 20, 2006

aded oil, especially the severely biodegraded giant Athabasca tar sands and the Orinoco bitumen in Canada and Venezuela, respectively.

Scientists have been trying to identify biodegradation-limiting nutrients - nutrients that are essential for growth of microbes in subsurface oil deposits. Reducing availability of those nutrients could slow the natural destruction of petroleum.

In the new research, University of Calgary researcher T. B. P. Oldenburg and colleagues conclude that nitrogen probably is not the limiting nutritional factor, as once believed. Their report, scheduled for the Sept. 20 issue of ACS' Energy & Fuels suggests that other essential microbial nutrients, such as phosphorous, are the limiting factors in the growth of biodegradation microbes.

ARTICLE #2

"Nutrient Supply during Subsurface Oil Biodegradation - Availability of Petroleum Nitrogen as a Nutrient Source for

Subsurface Microbial Activity"

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http://pubs.acs.org/cgi-bin/sample.cgi/enfuem/asap/pdf/ef060148p.pdf

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CONTACT:

Thomas Oldenburg, Ph.D.
PRG, Petroleum Reservoir Group
Department of Geology and Geophysics
University of Calgary
844 Campus Place Northwest
AB, Calgary
T2N 1N4
Canada
Phone:403-220-3260
Fax: 403-284-0074
E-mail: toldenbu@ucalgary.ca


ARTICLE #3 FOR IMMEDIATE RELEASE

Mercury compound found in fish damages pancreatic cells

Chemical Research in Toxicology

Researchers in Taiwan say they have established for the first time that the mercury compound present as a contaminant in some seafood can damage insulin-p
'"/>

Contact: Michael Woods
m_woods@acs.org
202-872-4400
American Chemical Society
25-Sep-2006


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