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:11/4/2014)... Nov. 4, 2014   Neurotechnology , a ... that the latest version of its fingerprint matching ... Ongoing MINEX evaluation organized by NIST. The ... using the INCITS 378 fingerprint standard template format. ... public tenders in the United States ...
(Date:11/3/2014)... study published in this month,s Proceedings of ... of a recently discovered communication molecule of the body,s ... known to limit inflammation and the current study reports ... the ability of the immune system to recognize and ... IL-37,s effect on the immune system now allows us ...
(Date:11/3/2014)... that low birth weight and preterm birth are linked ... adulthood. Findings published in the American College of Rheumatology ... that low birth weight and pre-term babies were not ... as adults. , According to the ACR, 27 ... with clinical OA. Symptoms of OA range from mild ...
Breaking Biology News(10 mins):Neurotechnology Places Second in Ongoing MINEX Ranking for Fingerprint Matching Algorithms 2Neurotechnology Places Second in Ongoing MINEX Ranking for Fingerprint Matching Algorithms 3PNAS: From HIV to cancer, IL-37 regulates immune system 2Preterm, low birth-weight babies may need new hips in adulthood 2
(Date:11/21/2014)... 2014 , Todd Martensen ... Mariano Rodríguez es elegid vicepresidente senior de desarrollo ... está en marcha para comenzar de forma rápida la comercialización ... reciente aprobación en Europa   , ... anunciar los siguientes nombramientos: Todd Martensen ...
(Date:11/21/2014)... 2014 Author Matthew J. Pallamary’s second ... Other Side” published as a tribute to his ... “Fiction: Short Story” category of the 2014 USA ... CEO of USA Book News, said this year’s contest ... including Simon & Schuster, Penguin, John Wiley & Sons, ...
(Date:11/21/2014)... 20, 2014 BlueInGreen, LLC ( ... LLC (Pinnacle), and PCI, Inc., leading suppliers of ... have been selected to provide a new state-of-the-art ... Paul R. Noland Wastewater Treatment. The new ... HyDOZ® gas dissolution technology, Pinnacle Ozone’s industry ...
(Date:11/21/2014)... Nov. 20, 2014 Polaris Group announced ... in its Phase 1 trial of ADI-PEG 20 ... treatment of malignant pleural mesothelioma (MPM) and non-squamous ... clinical trials on ADI-PEG 20, both as monotherapy ... treatment of several other indications, including breast cancer, ...
Breaking Biology Technology:KLOX Technologies anuncia sus nombramientos ejecutivos 2KLOX Technologies anuncia sus nombramientos ejecutivos 3KLOX Technologies anuncia sus nombramientos ejecutivos 4KLOX Technologies anuncia sus nombramientos ejecutivos 5Mystic Ink 's Short Story Collection “A Short Walk to the Other Side” Honoring Ray Bradbury Praised As Award-Winning Finalist In USA Best Book Awards 2Mystic Ink 's Short Story Collection “A Short Walk to the Other Side” Honoring Ray Bradbury Praised As Award-Winning Finalist In USA Best Book Awards 3Mystic Ink 's Short Story Collection “A Short Walk to the Other Side” Honoring Ray Bradbury Praised As Award-Winning Finalist In USA Best Book Awards 4City of Fayetteville Leads Nation with Innovative Ozone Technology 2City of Fayetteville Leads Nation with Innovative Ozone Technology 3City of Fayetteville Leads Nation with Innovative Ozone Technology 4Polaris Group Announces Treatment of First Patient in Phase 1 Study of ADI-PEG 20 plus Pemetrexed and Cisplatin in Malignant Pleural Mesothelioma And Non-Squamous Non-Small Cell Lung Carcinoma 2
Cached News: