Navigation Links
Pesticides persist in ground water
Date:7/1/2008

Numerous studies over the past four decades have established that pesticides, which are typically applied at the land surface, can move downward through the unsaturated zone to reach the water table at detectable concentrations. The downward movement of pesticide degradation products, formed in situ, can also contribute to the contamination of ground water. Once in ground water, pesticides and their degradation products can persist for years, depending upon the chemical structure of the compounds and the environmental conditions.

Scientists at the U.S. Geological Survey (USGS) investigated the occurrence of selected pesticides and their degradation products in ground water during a study funded by the USGS National Water-Quality Assessment (NAWQA) Program. Specifically, the authors examined several of the factors that can influence the likelihood with which pesticides and their degradation products are detected in shallow ground waterincluding oxidation-reduction (redox) conditions and ground-water residence timesat four study sites across the United States. Results from the study were published in the May-June 2008 issue of the Journal of Environmental Quality.

The study revealed that the pesticides and degradation products detected most frequently in shallow ground-water samples from all four areas were predominantly from two classes of herbicidestriazines and chloroacetanilides. None of the insecticides or fungicides examined were detected in ground-water samples. In most samples, the concentrations of the pesticide degradation products greatly exceeded those of their parent compounds. Pesticides or their degradation products were detected most commonly in ground water that recharged between 1949 and 2004, and in monitoring wells spanning the full depth range (about 2 to 52 m) examinedfrom the shallowest to the deepest wellsin all four study areas. Comparisons of pesticide concentrations with a variety of environmental variables ind
'/>"/>

Contact: Sara Uttech
suttech@agronomy.org
608-268-4948
American Society of Agronomy
Source:Eurekalert

Page: 1 2

Related biology news :

1. Satellites help ensure efficient use of pesticides
2. Alternative methods proposed to detect pesticides and antibiotics in water and natural food
3. Persistent man-made chemical pollutants found in deep-sea octopods and squids
4. Using ground-penetrating radar to observe hidden underground water processes
5. Stakeholders use science to find common ground on wood supply from forests
6. Western Groundfish Conference to be held in Santa Cruz on Feb. 4-8
7. BGSU undergraduates to pilot groundbreaking genome project
8. Smart flower bulbs pull themselves to deeper ground
9. Local sources major cause of US near-ground aerosol pollution
10. Scientists from the UGR prove that rivers do not act as barriers for groundwater flow
11. Opium and marijuana research go underground
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:10/31/2014)... WCS study confirms that endangered musk deer still live ... sighting, Species targeted by poachers: Musk deer scent glands ... the October issue of the journal Oryx ... 60 years after its last confirmed sighting, a strange ... forested slopes of northeast Afghanistan according to a research ...
(Date:10/31/2014)... source that emits over a wide part of the ... currently being built in Lund, Sweden. The MAX IV ... team putting together its component parts in a storage ... of just a few hundred metres. Nevertheless, if these ... class of experiments that require source brightness and transverse ...
(Date:10/31/2014)... Haven, Conn. – Geologists are letting the air out of ... Earth. , Scientists have long speculated as to why animal ... surface. Animals began to prosper at the end of the ... about the billion-year stretch before that, when most researchers think ... the air wasn,t so great then, after all. , In ...
Breaking Biology News(10 mins):Strange, fanged deer persists in Afghanistan 2A new generation of storage -- ring 2Lack of oxygen delayed the rise of animals on Earth 2
... is available in German . , Metabolomics aims ... cell or a tissue. The exponents of bioinformatics analyzed data ... healthy and diabetic mice. In each case, a subgroup of ... more than 800 metabolites were quantitatively determined in a blood ...
... flower and plant growers know all too well that ... and deterring healthy growth of potted ornamental plants. To ... expensive practice of paying workers to hand-weed containers. Some ... on the wide range of plant species produced in ...
... July/August 2008 issue of BioScience are as follows: ... Joan Burnside, and Scott V. Edwards. , An increasingly broad ... expanding what has been learned from studies based on the ... of the whole class. ***************, Penguins as Marine ...
Cached Biology News:Healthy or diseased? 2Ethanol byproduct produces green results 2BioScience tip sheet July/August 2008 2BioScience tip sheet July/August 2008 3
(Date:10/31/2014)... 31, 2014 The report "Offshore Support ... Vessel, Platform Supply Vessels, Multi-Purpose Service Vessel, Crew Boats, ... - Global Trends & Forecast to 2018", defines and ... forecasting of the global revenue. , Offshore support vessel ... in 2013 to $ 91,228.8 Million by 2018, with ...
(Date:10/31/2014)... , October 31, 2014 Huge ... barometer of future pharma industry health, analysis and forecasting   ... Live, celebrates the closing of its most successful show ... attendees and 2,500 exhibitors. Held this year in ... makers and key players from 140+ countries representing every ...
(Date:10/31/2014)... 31, 2014 Having access to safe ... uphill battle in many corners of the globe. It’s ... community in northwestern Bolivia where many have been sickened ... from Fairfield University’s School of Engineering has been working ... Campesina (UAC), “the united college for the peasants.” A ...
(Date:10/31/2014)... London, UK (PRWEB) October 30, 2014 Caustic ... salts, epoxy resins and polycarbonates. At present, China takes lead ... , Dow, which possesses a number of facilities in ... player in the world caustic soda market in terms of ... is forecast to grow on average by 3% per year ...
Breaking Biology Technology:Offshore Support Vessel Market Projected to Reach $91,228.8 Million by 2018 - Report by MarketsandMarkets 2Offshore Support Vessel Market Projected to Reach $91,228.8 Million by 2018 - Report by MarketsandMarkets 3Offshore Support Vessel Market Projected to Reach $91,228.8 Million by 2018 - Report by MarketsandMarkets 4CPhI Worldwide 2014 Announces Biggest Ever Show and Points to Pharma Growth in Brazil, Russia and Fast Emerging Africa 2CPhI Worldwide 2014 Announces Biggest Ever Show and Points to Pharma Growth in Brazil, Russia and Fast Emerging Africa 3CPhI Worldwide 2014 Announces Biggest Ever Show and Points to Pharma Growth in Brazil, Russia and Fast Emerging Africa 4CPhI Worldwide 2014 Announces Biggest Ever Show and Points to Pharma Growth in Brazil, Russia and Fast Emerging Africa 5CPhI Worldwide 2014 Announces Biggest Ever Show and Points to Pharma Growth in Brazil, Russia and Fast Emerging Africa 6Fairfield University School of Engineering project reduces illness in rural community 2Fairfield University School of Engineering project reduces illness in rural community 3China to Dominate Caustic Soda Market Through 2018, Says Merchant Research & Consulting in Its New Study 2
... 14 Bionovo, Inc.,(Nasdaq: BNVI ) announced ... Board of Directors. Mr. Drapeau has extensive financial,management ... "We are quite excited to have access to ... CEO. "Lou is particularly well versed,in the unique ...
... CALGARY, March 14 /PRNewswire-FirstCall/ - SemBioSys Genetics ... portfolio of therapeutic,proteins for metabolic and cardiovascular ... an important step forward in the,commercialization of ... an,exclusive global alliance with Bioriginal Food and ...
... Express, the advance online publication of the journal ... mark an important step toward understanding a longstanding ... presented their findings at the annual meeting of ... problem the physicists addressed is how a fundamental ...
Cached Biology Technology:Louis Drapeau Joins Bionovo's Board of Directors 2Louis Drapeau Joins Bionovo's Board of Directors 3SemBioSys' GLA Partner Enters Strategic Alliance for the Sales and Marketing of GLA-Rich Safflower Oil 2SemBioSys' GLA Partner Enters Strategic Alliance for the Sales and Marketing of GLA-Rich Safflower Oil 3Physicists discover how fundamental particles lose track of quantum mechanical properties 2Physicists discover how fundamental particles lose track of quantum mechanical properties 3
Prepared by multi-temperature ethanol fractionation with extensive charcoal treatment and dialysis.• Assay: ≥ 95 % (HPCE)• pH ~5.2 (10 mg/mL in 0.15 M NaCl)...
... DAPI (4,6-diamidine-2-phenylindole, dihydrochloride) is a ... nucleus blue in color. The ... contrast to red fluorochromes such ... or R-Phycoerythrin. DAPI can be ...
... (CYP450) metabolite postulated to play an autacoid ... In rat cerebral microvessels, 20-HETE is a ... is excreted mainly as the glucuronide conjugate. ... in human urine) is about 10-fold lower ...
Rabbit polyclonal to Quinaldic Acid ( Abpromise for all tested applications). Antigen: Synthetic peptide Quinaldic Acid conjugated to a protein carrier....
Biology Products: