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:8/25/2014)... the first U.S. outbreaks of the H1N1 virus swept ... people. A university math and biology professor has used ... gain insight into how only a few infected people ... community., The fall 2009 semester hadn,t even started when ... and Wellness Services clinic11 one day, and just two ...
(Date:8/25/2014)... battery-powered DNA diagnostic device invented at New Zealand,s ... commonly used field tool for rapidly detecting suspected ... the level of infection. , The breakthrough device, ... Queenstown Molecular Biology main meeting. It takes advantage ... target DNA sequences in real-time, without the need ...
(Date:8/25/2014)... separation from a device the size of a cell ... acoustic waves, according to a team of engineers., "For ... before analysis," said Tony Jun Huang, professor of engineering ... the integrity of the cells, damages them in any ... surface acoustic waves can separate cells using very small ...
Breaking Biology News(10 mins):WSU flu outbreak provides rare study material 2WSU flu outbreak provides rare study material 3Revolutionary handheld DNA diagnostic unit allows lab-quality analysis in the field 2Tilted acoustic tweezers separate cells gently 2
(Date:8/26/2014)... , Aug. 26, 2014  That,s Nice LLC, ... markets, today announced the formation of a new dedicated ... development. The expanded team will combine current and new ... at That,s Nice. Guy Tiene ... to lead the team. Tiene was previously Director of ...
(Date:8/26/2014)... InstantGMP, Inc., the only cloud-based manufacturing execution ... structure with increased user accounts to help current and ... Part 11 requirements. , “We want to help our ... said Rick Soltero, President of InstantGMP. “We found ... to have separate accounts for multiple quality managers and ...
(Date:8/26/2014)... August 26, 2014 Formedix, the ... announced the release of Transform for MARVIN: the ... Data Capture (EDC) product line. It was developed ... allows integration with MARVIN, the EDC and Clinical ... study setup time, by allowing instantaneous visualization of ...
(Date:8/26/2014)... 2014 /PRNewswire-iReach/ -- The crowdfunding campaign for PosturePulse ... on the popular crowdfunding platform Kickstarter. Backers have already ... biofeedback belt. The $75,000 funding goal for the campaign ... product. Photo - http://photos.prnewswire.com/prnh/20140825/139254 ... the lower back that silently vibrates if the wearer ...
Breaking Biology Technology:That's Nice Announces Expanded Offering For Strategic Content And Public Relations 2That's Nice Announces Expanded Offering For Strategic Content And Public Relations 3Introducing Transform for MARVIN: Providing Further Flexibility for CROs and Sponsors in Partnership with XClinical 2PosturePulse, A Biofeedback Posture-Improving Belt, Improves Posture While Sitting or Standing 2
Cached News: