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:
TAG: Sunlight converts common anti bacterial agent dioxin

(Date:5/20/2015)... 20, 2015 ... announced the addition of the  "5-year ... Recognition Market"  report to their offering.  ... service analyses trends in the iris ... commercial sectors, globally. Despite hardware pricing ...
(Date:5/19/2015)... , May 19, 2015 ... has announced the addition of the  "Genetic ... offering.  ,     (Logo: http://photos.prnewswire.com/prnh/20130307/600769) , ,A recent ... an in-depth analysis of the current and ... of gene-based tests, their working principles and ...
(Date:5/11/2015)... 2015  Synaptics Incorporated (NASDAQ: SYNA ), ... announced the appointment of Wajid Ali ... reporting to Rick Bergman , President and ... Officer, Kathleen Bayless , who announced her ... Ali brings extensive financial management expertise to Synaptics, ...
Breaking Biology News(10 mins):Global Iris Recognition Market Report 2015 - 5-Year Opportunity Analysis 2Global Genetic Testing Market Outlook 2018 2Synaptics Appoints Wajid Ali as Senior Vice President and Chief Financial Officer 2
(Date:5/21/2015)...  CytRx Corporation (NASDAQ: CYTR ), a ... today announced positive updated results from its ongoing ... treatment of unresectable glioblastoma multiforme (GBM), a deadly ... is designed to investigate the preliminary efficacy and ... progressed following prior treatment with surgery, radiation and ...
(Date:5/21/2015)... DUBLIN , May 20, 2015 Research ... announced the addition of the "2015 Global ... to their offering. The primary goal ... of flow cytometry instruments and reagents. Key information ... drive the selection of flow cytometers, predominantly used ...
(Date:5/21/2015)... Veolia’s environmental monitoring technology division, Endetec, ... agreement with VWR to distribute TECTA™ B16, an ... 160 years of experience, VWR, a leading global ... production facilities, has cultivated a value proposition delivering ... enable science. Endetec’s TECTA™ B16, combines proven ...
(Date:5/20/2015)... , May 20, 2015 ... presented preliminary data demonstrating the ability of the ... fibrosis (IPF) from other interstitial lung diseases (ILDs) ... the classifier,s potential to help thousands of patients ... ambiguity in IPF diagnosis – a frequent challenge ...
Breaking Biology Technology:CytRx Reports Positive Updated Phase 2 Aldoxorubicin Clinical Trial Results in Glioblastoma Multiforme (Brain Cancer) 2CytRx Reports Positive Updated Phase 2 Aldoxorubicin Clinical Trial Results in Glioblastoma Multiforme (Brain Cancer) 3CytRx Reports Positive Updated Phase 2 Aldoxorubicin Clinical Trial Results in Glioblastoma Multiforme (Brain Cancer) 4CytRx Reports Positive Updated Phase 2 Aldoxorubicin Clinical Trial Results in Glioblastoma Multiforme (Brain Cancer) 5CytRx Reports Positive Updated Phase 2 Aldoxorubicin Clinical Trial Results in Glioblastoma Multiforme (Brain Cancer) 6CytRx Reports Positive Updated Phase 2 Aldoxorubicin Clinical Trial Results in Glioblastoma Multiforme (Brain Cancer) 7Global Survey on Flow Cytometry Adoption Trends 2015 2Veolia’s TECTA™ B16 Instrument for E. Coli Detection is Offered Exclusively Through VWR 2Veracyte Presents Preliminary Data Demonstrating Ability of Molecular Classifier to Improve Non-Surgical IPF Diagnosis Using Bronchoscopy Samples 2Veracyte Presents Preliminary Data Demonstrating Ability of Molecular Classifier to Improve Non-Surgical IPF Diagnosis Using Bronchoscopy Samples 3Veracyte Presents Preliminary Data Demonstrating Ability of Molecular Classifier to Improve Non-Surgical IPF Diagnosis Using Bronchoscopy Samples 4Veracyte Presents Preliminary Data Demonstrating Ability of Molecular Classifier to Improve Non-Surgical IPF Diagnosis Using Bronchoscopy Samples 5
Cached News: