Navigation Links
UI study measures levels of PCBs flowing from Indiana canal to air and water
Date:2/24/2010

A University of Iowa study supports an earlier UI report that found polychlorinated biphenyls (PCBs) in sediments lining the Indiana Harbor and Ship Canal (IHSC) in East Chicago, Ind. The study also presents data showing that the sediments are a significant source of PCBs found in surrounding air and in Lake Michigan.

The study appears in the online edition of the journal Environmental Science and Technology (ES&T), a publication of the American Chemical Society and is scheduled for formal journal publication in April.

The study emphasizes the fact that it is unknown whether the proposed dredging of the canal to improve its navigability will result in the release of greater amounts of PCBs due to disturbing the sediments or lesser amounts through sediment removal. However, one thing is certain -- PCBs are already leaching into the environment in significant amounts, said Keri Hornbuckle, professor in the UI College of Engineering Department of Civil and Environmental Engineering and corresponding author on the study.

"We have analyzed PCBs in surficial sediment, water, suspended particles and air and examined the potential for chemical movement in the harbor system," Hornbuckle said. "We have shown that the system is currently a significant source of PCBs to the air and to Lake Michigan, even under quiescent conditions."

In order to obtain accurate estimates of each PCB emission, the researchers used on-site sampling in conjunction with a predictive model for chemical mass transfer and a mathematical approach to estimate the variability in the results.

They found that annually about 4 kilograms (kg) were released from the sediment to the water and about 7 kg were transferred from the water to the air. The PCB input from the upstream regions of the canal system measured 45 kg per year and the amount exported to Lake Michigan was 43.9 kg. The study noted that the measured PCBs account for nearly all the PCB in
'/>"/>

Contact: Gary Galluzzo
gary-galluzzo@uiowa.edu
319-384-0009
University of Iowa
Source:Eurekalert

Page: 1 2

Related biology news :

1. UCLA study finds genetic link between misery and death
2. Hormone study gives scientists a sense of how animals bond
3. Study shows that suffocating head lice works in new treatment
4. Michigan State uses NSF grant to study evolution in action
5. Study highlights sustainable footprint of chemical companies
6. Stress raises risk of mental decline in older diabetics, study shows
7. New study finds link between marine algae and whale diversity over time
8. Study finds variations in 1 gene may be associated with endurance running
9. Study: Crickets forewarn unborn babies about spiders
10. Study examines family lineage of King Tut, his possible cause of death
11. Butterfly vision, wing colors linked, UCI study finds
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/17/2014)... Cell Press journal Current Biology on April ... sex lives. The Brazilian insects, which represent four distinct ... are the first example of an animal with sex-reversed ... in several different animals, Neotrogla is the ... reversed," says Kazunori Yoshizawa from Hokkaido University in Japan. ...
(Date:4/17/2014)... process whereby the genetic information of DNA is ... which have numerous different functions in living organisms. ... during gene expression, by relating the genetic information ... manufacturing proteins. , By examining the different ... an organism at a given time, researchers can ...
(Date:4/17/2014)... chock full of wild animals and plant life, but ... are churning away in the soil, decomposing organic matter ... vital role these fungi play in ecological systems, their ... of scientists has generated a genetic map of more ... work was published this week in the Proceedings ...
Breaking Biology News(10 mins):In sex-reversed cave insects, females have the penises 2Rapid and accurate mRNA detection in plant tissues 2Stanford biologists help solve fungal mysteries 2Stanford biologists help solve fungal mysteries 3
... blocks sperm. Evidence suggests that human male fertility ... and their receptors are present in the male reproductive ... there has been no genetic test to clarify mechanisms. ... issue, Sun et al. characterize the phenotype of mice ...
... a modest beneficial effect of anakinra for rheumatoid arthritis ... and its use with other biologic medications. Rheumatoid ... as one in 100 people worldwide. It affects the ... of a new breed of arthritis drugs licensed in ...
... who received a daily nutritional supplement for three months had a ... compared to children who did not receive the supplementation, according to ... Wasting (defined as a certain deviation that a child,s weight ... same height in a reference group) is characterized by the loss ...
Cached Biology News:February 2009 highlights from Biology of Reproduction 2Anakinra for rheumatoid arthritis: A modest benefit with some risk 2Nutritional supplementation program helps prevent weight loss among children in African country 2Nutritional supplementation program helps prevent weight loss among children in African country 3
(Date:1/15/2014)... 2014  Bill Jacobs Automotive, a group of car dealerships headquartered ... the Heartland Blood Center and offering free oil change coupons ... place Saturday, Jan. 18 at the Bill Jacobs Cadillac and ... (Photo: http://photos.prnewswire.com/prnh/20140115/MN46637 )  The Bill Jacobs ...
(Date:1/15/2014)... OXFORD, England and SAN JOSE, California ... an international biotechnology company developing antibody-drug conjugates for cancer, today ... its Board of Directors. Dr Reynolds has over 20 years, ... Chief Medical Officer at Seattle Genetics. "I am ...
(Date:1/15/2014)... Reston, VA (PRWEB) January 15, 2014 ... education have continued their sponsorship of an annual competition ... interest in, and access to, innovative STEM study. The ... , TEAMS: Tests of Engineering Aptitude, Mathematics, and ...
(Date:1/15/2014)... AudioNotch is the internet's leading provider of Notched ... tinnitus. Patients listen to sound therapy that is tailor-made ... weeks to months, their tinnitus volume decreases. , AudioNotch has ... and Notched White Noise. Now, AudioNotch is pleased to announce ...
Breaking Biology Technology:Join the Bill Jacobs Auto blood drive and receive a free oil change 2Oxford BioTherapeutics Appoints Thomas C Reynolds MD, PhD to its Board of Directors 2Oxford BioTherapeutics Appoints Thomas C Reynolds MD, PhD to its Board of Directors 3Technology Student Association Partners with Leaders in STEM Education Advocacy for Annual Competition 2Technology Student Association Partners with Leaders in STEM Education Advocacy for Annual Competition 3Technology Student Association Partners with Leaders in STEM Education Advocacy for Annual Competition 4Technology Student Association Partners with Leaders in STEM Education Advocacy for Annual Competition 5
... 4, 2012 InterMune, Inc. (NASDAQ: ITMN) today announced ... related to sales of Esbriet® (pirfenidone) in Germany, as ... prior to the open of the U.S. markets on ... webcast will be hosted by InterMune at 8:30 a.m. ...
... AMSTERDAM, January 4, 2012 Amsterdam Molecular ... human gene therapy, announced today that the U.S. Food ... its gene therapy program for the treatment of hemophilia ... to seven years market exclusivity on regulatory approval. Orphan ...
... secret to the fountain of youth will be discussed in ... and Mrs. Kathy Bleznak, a team of regenerative medicine, stem ... School of Medicine will convene in Palm Beach.  ... will have an opportunity to learn how dermatologists and plastic ...
Cached Biology Technology:InterMune to Report Unaudited Fourth Quarter EsbrietĀ® Revenue and Business Update on January 5 2Amsterdam Molecular Therapeutics Receives US Orphan Designation for Hemophilia B Gene Therapy 2Palm Beach Residents to Learn How the Future of Regenerative Medicine Will Combat Aging 2
... [PRMT5-21] to PRMT5 Arginine methylation is ... only recently been linked to protein activity. ... have been identified in mammalian cells. These ... regulatory functions by methylation of key proteins ...
... contains enough separation reagents to ... of 5 x 10 8 ... StemSep red magnet and all ... for the specific cell type ...
... LNA technology enables sensitive, fast and specific ... chromosomes. Short hybridisation time ( ... and chromosome spreads Multiplex capability ... Probes available with different ...
... The enzyme glycerol 3-phosphate dehydrogenase catalyzes ... (DHAP) and glycerol 3-phosphate, with NAD ... significantly during differentiation of progenitor cells ... of this enzyme has been used ...
Biology Products: