HOME >> BIOLOGY >> NEWS
Sunlight converts common anti-bacterial agent to dioxin

MINNEAPOLIS / ST. PAUL--Sunlight can convert triclosan, a common disinfectant used in anti-bacterial soaps, into a form of dioxin, and this process may produce some of the dioxin found in the environment, according to research at the University of Minnesota. The researchers said that although the dioxin was a relatively benign form, treating wastewater with chlorine could possibly lead to the production of a much more toxic species of dioxin. The study is in press in the Journal of Photochemistry and Photobiology A: Chemistry.

It had already been known that triclosan could be converted to dioxin in the laboratory, and it was also known that sunlight causes triclosan to degrade in the environment. But it had not been known that the natural degradation resulted in dioxin, said researchers Kristopher McNeill, an assistant professor of chemistry, and William Arnold, assistant professor of civil engineering. They discovered that the reaction could occur in Mississippi River water exposed to ultraviolet light.

"This form of dioxin is at least 150,000 times less toxic than the most dangerous form," said McNeill. "But repeated exposure to chlorine, perhaps in water treatment facilities, could chlorinate triclosan. After chlorinated triclosan is discharged from the facility, sunlight could convert it into more toxic dioxins. Such a process could be a source of highly toxic dioxin in the environment."

"This study also shows that the disappearance of a pollutant such as triclosan doesn't necessarily mean an enviromental threat has been removed," said Arnold. "It may just have been converted into another threat."

The researchers began their study after reading numerous environmental studies that reported the presence of pharmaceutical compounds in surface waters around the nation. McNeill and Arnold decided that the logical next step was to examine the natural processes that led to the loss of such materials in the environment. Last year, the U.
'"/>

Contact: Deane Morrison
morri029@umn.edu
612-624-2346
University of Minnesota
14-Apr-2003


Page: 1 2

Related biology news :

1. Sunlight, PCB exposure enhance skin cancer chances
2. How Nature Harvests Sunlight
3. Researchers discover new oceanic bacterial photopigment that converts light into biochemical energy
4. New process converts municipal waste into commodities and fuel
5. Most recent common ancestor of all living humans surprisingly recent
6. Hidden diversity: DNA barcoding reveals a common butterfly is actually 10 different species
7. European common frog found to use novel mating strategy
8. Genetic clues found for common congenital brain disorder
9. Stanford researchers findings may shed light on common, deadly birth defect
10. U-M scientists find common virus in human prostate tissue
11. Scientists suggest framework for epigenetics in common disease

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:5/16/2017)...  Veratad Technologies, LLC ( www.veratad.com ), an innovative ... verification solutions, announced today they will participate as a ... thru May 17, 2017, in Washington D.C.,s ... Identity impacts the lives of billions ... evolving digital world, defining identity is critical to nearly ...
(Date:5/6/2017)... 5, 2017 RAM Group , ... new breakthrough in biometric authentication based on a ... properties to perform biometric authentication. These new sensors are ... created by Ram Group and its partners. This sensor ... supply chains and security. Ram Group is a ...
(Date:4/19/2017)... The global military biometrics market ... by the presence of several large global players. The ... major players - 3M Cogent, NEC Corporation, M2SYS Technology, ... 61% of the global military biometric market in 2016. ... military biometrics market boast global presence, which has catapulted ...
Breaking Biology News(10 mins):
(Date:5/23/2017)... ... May 23, 2017 , ... Cambridge Semantics , the ... this year’s Bio-IT World Conference and Expo in Boston May 23-25 with ... solution. The Anzo Smart Data Lake is also a finalist for the Best ...
(Date:5/22/2017)... Baltimore, Maryland (PRWEB) , ... May 22, 2017 ... ... Ted Olsen, joined with other leaders of the Maryland Biohealth community in developing ... a globally recognized Top 3 U.S. BioHealth Innovation Hub by 2023. ...
(Date:5/21/2017)... ... May 20, 2017 , ... CNSDose is a genetically driven, ... process by finding the right antidepressant faster. CNSDose speeds recovery and reduces ... a personalized approach to treatment. , A peer-reviewed and published, 12-week ...
(Date:5/18/2017)... ... May 18, 2017 , ... Dr. Ralph Mobbs ... the Prince Of Wales Private Hospital. The procedure was performed on a 46-year-old ... failed conservative treatments prior to undergoing surgery. , The AxioMed viscoelastic disc is ...
Breaking Biology Technology:
Cached News: