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

S. Geological Survey published a widely circulated study of chemicals in surface water, in which triclosan was found in 58 percent of natural waters tested. Its median concentration was 0.14 parts per billion; the maximum was 2.3 ppb. McNeill and Arnold chose to study triclosan because they could tell from its structure that it would likely break down in sunlight.

In their study, McNeill and Arnold added triclosan to river water, shined ultraviolet light on the water, and found that between one percent and 12 percent of the triclosan was converted to dioxin.

"The fact that this conversion can happen in surface layers of rivers may not cause harm by itself, but it suggests that more serious reactions--leading to more toxic forms of dioxin--may also happen when triclosan enters the environment," said Arnold. "We want to determine if this is the case." As a first step in sorting out the relations, if any, between triclosan and more toxic dioxin, McNeill and Arnold plan studies to determine whether they tend to occur together in natural waters.

The researchers said that even low levels of very toxic dioxin are worrisome because dioxin readily accumulates in organisms and becomes more concentrated in tissues as it moves up the food chain.

The study was funded by the U.S. Geological Survey, through the National Institutes of Water Resources. Triclosan is manufactured by Ciba-Geigy.


'"/>

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:11/18/2014)... 17, 2014   News Highlights: ... to develop The Partners Data Lake, an agile ... Data Lake will allow researcher and clinicians to ... and the lives of patients , The ... activities across the Partners system, breaking down physical ...
(Date:11/18/2014)... NEW YORK , Nov. 18, 2014 /PRNewswire/ ... iris-based identity authentication solutions, and MorphoTrust USA ... solutions and services, today announced a strategic partnership ... across enterprise, motor vehicle administration (MVA), airport screening ... leader in identity-related solutions, MorphoTrust serves consumers through ...
(Date:11/12/2014)... Nov. 12, 2014 Crossmatch™, a leading provider ... U.are.U ® fingerprint readers have been deployed throughout ... Central Mexico . The bakery chain implemented ... payroll issues caused by employees clocking in for each ... fingerprint readers, Montparnasse relied on paper timecards and a ...
Breaking Biology News(10 mins):Partners HealthCare and EMC Unite to Solve Health Care's Toughest Challenges Using Big Data 2Partners HealthCare and EMC Unite to Solve Health Care's Toughest Challenges Using Big Data 3Partners HealthCare and EMC Unite to Solve Health Care's Toughest Challenges Using Big Data 4Partners HealthCare and EMC Unite to Solve Health Care's Toughest Challenges Using Big Data 5EyeLock, MorphoTrust Form Strategic Partnership to Pursue Commercial Enterprise Deployments 2EyeLock, MorphoTrust Form Strategic Partnership to Pursue Commercial Enterprise Deployments 3Montparnasse Pasteleria Achieves Time and Attendance Transparency with Crossmatch U.are.U Fingerprint Readers 2
(Date:11/24/2014)... , Nov. 24, 2014   Veracyte, Inc. (Nasdaq: ... Anderson , president and chief executive officer, will present in ... Annual Healthcare Conference on Tuesday, December 2, 2014 at ... The live audio webcast and subsequent replay may ... Please connect to the website at least 15 minutes prior ...
(Date:11/24/2014)... The new video, “ Save ... demonstrates how to reduce the number of instruments ... panel design can be complicated, requiring multiple chemical ... corrosion and deposition. Dedicated single and dual channel ... panel space. Additionally, installing and maintaining each transmitter, ...
(Date:11/22/2014)... Two new educational webinars hosted by DrugDev ... research and how the pharmaceutical industry can make life easier ... Where Does the ALS Money Go? , Featuring guest speaker ... 1:30pm ET, Register to attend , This webinar ... Julianne Dorn Professor of Neurology at Massachusetts General Hospital at ...
(Date:11/22/2014)... 2014 RURO, Inc., a leading ... released Limfinity® version 5.1.4. , RURO’s deployment teams ... than ever in RURO’s 8 year history. Many ... enhancement. Limfinity® version 5.1.4 is the perfect example ... bug fixes! , Limfinity® 5.1.4 release highlights – ...
Breaking Biology Technology:Veracyte to Present at the Piper Jaffray 26th Annual Healthcare Conference 2New Video Shows How to Simplify Cycle Chemistry Sample Panels to Save Time and Costs 2DrugDev Webinars in December to Explore What Comes Next for ALS Research and How We Can Make Life Easier for Clinical Sites 2RURO Announces Limfinity® version 5.1.4 2
Cached News: