Mercury concentrations were greater in bighead carp and were elevated in both species taken from the confluence of the Illinois and Mississippi rivers. "These fish are low in mercury in comparison to many other commercially available fish. However, as always consumers need to make informed decisions about their food choices," said Dr. Jeff Levengood, lead investigator of the study.
Arsenic and selenium concentrations in bighead and silver carp fillets examined did not pose a risk to human consumers. Inorganic arsenic concentrations were undetectable and concentrations of selenium in carp fillets were well below the 1.5 mg/kg threshold for restricting the number of meals according to the US Environmental Protection Agency. "Carp species, size and collection location should be considered in judging risks associated with uses of these fish taken from the Illinois River ", Levengood said.
Established in 1858, the Illinois Natural History Survey (INHS) mission is to investigate and document the biological resources of Illinois and other areas, and to acquire and provide natural history information that can be used to promote the common understanding, conservation, and management of these resources. With a staff of over 200 scientists and technicians, it is recognized as the premier natural history survey in the nation and is part of the Prairie Research Institute at the University of Illinois. http://www.inhs.illinois.edu.
The Prairie Research Institute at the University of Illinois at Urbana-Champaign is the home of the Illinois State Scientific Surveys: Illinois Natural History Survey, Illinois State Archaeological Survey, Illinois State Geological Survey, Illinois State Water Survey, and Illinois Sustainable Technology Center. The institute is the applied research arm of the state of Illinois, and provides anticipatory research, long-term data collection, and a capacity for rapid deployment and response to sudden or unexpected circumstances. For over 160 years the surveys have applied cutting-edge science and expertise to keep Illinois' economy, environment and people prosperous and secure. http://www.prairie.illinois.edu
Chemosphere, Available online 2 December 2013
Jeffrey Levengood | EurekAlert!
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