Navigation Links
Researchers find high levels of toxic PCBs in Indiana Harbor and Ship Canal
Date:9/9/2011

University of Iowa researchers have found high levels of toxic polychlorinated biphenyls (PCBs) in the deep sediments lining the Indiana Harbor and Ship Canal (IHSC) in East Chicago, Ind. Scientists say the discovery is cause for concern because the IHSC is scheduled to be dredged in spring 2012 to maintain proper depth for ship traffic in this heavily industrialized area of southern Lake Michigan.

The study, published online in the journal Chemosphere on Sept. 6, builds upon a previous UI study that found the release of PCBs from the sediment floor to the water above, and then, to the air. This time, scientists drilled down into the floor of the canal and discovered that the concentration of PCBs buried within the sediment is even higher.

"We found that the deeper you go, the more toxic it is," said Andres Martinez, a UI postdoctoral scholar in civil and environmental engineering and lead author of the study. "Dredging the IHSC has the potential to expose these more toxic sediments."

PCBs can enter the human body by eating or drinking contaminated food, through the air we breathe, or by skin contact. According to the Environmental Protection Agency (EPA), these compounds have been shown to cause cancer, along with a variety of other adverse health effects on the body's immune, reproductive, nervous and endocrine systems.

"This finding is significant because it demonstrates that the concentration of toxic chemicals below the surface of the canal floor is quite high," said Keri Hornbuckle, professor of civil and environmental engineering in the UI College of Engineering and coauthor of the study. "We need to get this information out, because the level of pollutants underneath the sediment has never been reported."

PCBs were widely used as coolants in electrical transformers and in a wide variety of products, ranging from waterproofing compounds to paints and pesticides. They were manufactured from 1929 until th
'/>"/>

Contact: Jennifer Brown
jennifer-l-brown@uiowa.edu
319-356-7124
University of Iowa Health Care
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. NC State researchers get to root of parasite genome
2. Researchers find animal with ability to survive climate change
3. Researchers find an essential gene for forming ears of corn
4. Researchers note differences between people and animals on calorie restriction
5. Researchers study acoustic communication in deep-sea fish
6. Researchers discover that growing up too fast may mean dying young in honey bees
7. Researchers study how pistachios may improve heart health
8. UI researchers find potentially toxic substance present in Chicago air
9. Researchers develop new self-training gene prediction program for fungi
10. Case Western Reserve University researchers track Chernobyl fallout
11. Childrens National researchers develop novel anti-tumor vaccine
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:8/28/2014)... , Aug. 28, 2014  Privacy Advocate and Senior ... Jennifer Lynch , joins the lineup of biometric and ... annual Biometrics UnPlugged Executive Summit in Tampa, ... Previously announced speakers include Steven Rahman, Director, Technology and ... Sector at Experian. The theme of this year,s event ...
(Date:8/28/2014)... production systems are good examples of complex systems. ... a networkincluding water for cooling, transport to supply ... Every step in the network chain is interconnected ... mutually dependent. A team of UK-based scientists has ... explored. The findings have been published in EPJ ...
(Date:8/28/2014)... will be built worldwide by 2050. Many of these ... bring an influx of destructive loggers, hunters and illegal ... a ,global roadmap, for prioritising road building across the ... development and environmental protection. , The map has two ... of ecosystems and a ,road-benefits, layer that estimates the ...
Breaking Biology News(10 mins):Biometrics UnPlugged Welcomes the Electronic Frontier Foundation's Jennifer Lynch to the Mobility at the Crossroads of Commerce and Privacy Summit 2Inter-dependent networks stress test 2Study shows where on the planet new roads should and should not go 2Study shows where on the planet new roads should and should not go 3
... as phages) are among the most abundant life ... in Nature, March 2 and 12, 2008, analyse ... organosedimentary structures (sedimentary features, built by the interaction ... the living analogues of the oldest fossils on ...
... for more than a decade that a protein associated with ... they didnt know how it worked. A multidisciplinary team from ... findings could improve the design of therapeutic agents that cross ... findings appears this month in Angewandte Chemie. The TAT ...
... is available in French . , OTTAWA ... of Industry, on behalf of the Honourable Jim Prentice, ... Sciences and Engineering Research Council of Canada (NSERC), and ... Nobel Laureate John C. Polanyi is the winner of ...
Cached Biology News:Surprising discovery from first large-scale analysis of biodiversity and biogeography of viruses 2Researchers discover how stealthy HIV protein gets into cells 2Researchers discover how stealthy HIV protein gets into cells 3Dr. John Polanyi wins Canada's most prestigious science award 2
(Date:8/28/2014)... August 28, 2014 The ability for ... culture that will allow individuals to perform at the ... important for employers looking to compete in this post–recession ... embracing this trend, as the sector increasingly focuses on ... company, which will have real results on the organization's ...
(Date:8/28/2014)... Sterlitech is proud to announce that ... stable of products . These additional products ... include membrane filters with surface charges. , ... for our membrane process testing equipment, and correspondingly, a ... membranes,” explains Sterlitech President Mark Spatz. “The addition ...
(Date:8/28/2014)... Washington, USA (PRWEB) August 27, 2014 ... next month for SPIE Laser Damage 2014 ... optical materials for high-power lasers will run 14-17 September. ... society for optics and photonics . , The premier ... for understanding laser damage to optical materials will engage ...
(Date:8/28/2014)... PrimeSource Building Products, Inc., a ... SoundConnect to support their communication needs with ... web conferencing platform GlobalMeet powered by SoundConnect. The ... SoundConnect delivers award winning “results driven” business ... will be utilizing GlobalMeet powered by SoundConnect ...
Breaking Biology Technology:Klein Hersh International Leads Philadelphia Area Life Science Industry in Company Culture 2Klein Hersh International Leads Philadelphia Area Life Science Industry in Company Culture 3Sterlitech Corporation Enhances Its Selection of Flat Sheet Membrane Filters 2Laser Damage to Draw Researchers, Engineers, Scientists to 46th Annual Conference 2Laser Damage to Draw Researchers, Engineers, Scientists to 46th Annual Conference 3PrimeSource Chooses SoundConnect as Collaboration Provider 2
... When the world's largest pharmaceutical company quit developing ... of Wisconsin-Madison researcher Hector DeLuca, the biochemist ... drug development firm. , ,In the beginning, it ... company, Deltanoid Pharmaceuticals , to address the ...
... Mequon, Wis. - Despite a slump in housing ... online mortgage-lending industry continues to build additions. , ,In ... in online transactions for first mortgages, mortgage refinances, home ... is poised to reach $22 million in revenue for ...
... you dropped the word sustainability in a crowd of ... have pegged you as an aging hippie, then scrambled ... to work. , ,Today, sustainability still carries some linguistic ... to talk because there's no avoiding a rational conversation. ...
Cached Biology Technology:Deltanoid presses on with drug research 2Mortgagebot builds online sales even as housing declines 2Mortgagebot builds online sales even as housing declines 3Mortgagebot builds online sales even as housing declines 4Re-engineering our economy to be sustainable and profitable 2Re-engineering our economy to be sustainable and profitable 3Re-engineering our economy to be sustainable and profitable 4