Navigation Links
Natural processes can limit spread of arsenic in water, says study
Date:10/11/2011

Many people in Bangladesh and other parts of Asia have been poisoned by drinking groundwater laced with arsenicnot introduced by humans, but leached naturally from sediments, and now being tapped by shallow drinking wells. In recent years, to avoid the problem, deeper wells have been sunk 500 feet or more to purer watersbut fears have remained that when deep water is pumped out, contaminated water might filter down to replace it. Now, a study has shown that deep sediments can grab the arsenic and take it out of circulationa finding that may help to keep wells safe elsewhere, including in the United States. The study, led by researchers at Columbia University's Department of Earth and Environmental Engineering and the Lamont-Doherty Earth Observatory, appears in the current online edition of the journal Nature Geoscience.

Lead author Kathleen Radloff and her colleagues injected arsenic-rich water into a deep aquifer in Bangladesh, then monitored arsenic levels over nine days. They found that arsenic fell by 70 percent after 24 hours, and continued to decline over the monitoring period. They attributed this to the arsenic sticking to the surfaces of deep sediment particles, in a process called adsorption.

However, the process may have limits. The results were applied to a hydrological model of the Bengal Basin, the aquifer that serves most of Bangladesh and the neighboring Indian state of West Bengal. Using the model, the team found that the risk of arsenic contamination is limited when wells are restricted to household use, but increases significantly if they are also used for irrigation, even if much arsenic adsorbs to the sediment.

Elevated arsenic is common in shallow drinking wells across much of South and Southeast Asia, but the problem has been most apparent in Bangladesh. The World Health Organization has called it the largest mass poisoning in history. Researchers from Columbia's Mailman School of Public Health, Lamont-
'/>"/>

Contact: Kevin Krajick
kkrajick@ei.columbia.edu
212-854-9729
The Earth Institute at Columbia University
Source:Eurekalert  

Page: 1 2

Related medicine news :

1. Soy-based natural S-equol supplements improve crows feet skin wrinkles in menopausal women
2. For Kids, Natural Disasters Can Whip Up Worries
3. Bodys natural marijuana-like chemicals make fatty foods hard to resist
4. Study shows pine bark naturally improves heart function
5. Cooling system may build eggs natural defenses against salmonella
6. Natural Alzheimers weapon suggests better treatment
7. Cooling the brain during sleep may be a natural and effective treatment for insomnia
8. Helping the aged during natural disasters
9. Led by advances in chemical synthesis, scientists find natural product shows pain-killing properties
10. Twitter and natural disasters
11. Federal Natural Resource Trustees announce next step in BP Deepwater Horizon spill Gulf restoration
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Natural processes can limit spread of arsenic in water, says study
(Date:7/25/2014)... Stwd.co.uk, one of the leading dress manufacturers ... cheap evening dress for women. In addition, the ... for these items. They are available at discounted rates, ... August 30. , “We are pleased to announce our ... have a large number of stylish special occasion gowns ...
(Date:7/25/2014)... July 25, 2014 Healthpointe is ... clinic is offering Occupational Medicine services to ... happily accepting referrals and workers’ compensation cases. ... Mirada clinic include wound care treatment management, return-to-work ... assessments, pre-employment screening & physicals, and illness and ...
(Date:7/25/2014)... MEDICC announced diplomas went to 1,382 new ... University of Havana’s graduation ceremonies that also included graduates ... the 879 international graduates from 28 countries, 20 were ... Professors and hundreds of parents packed the Cuban labor ... Vice President Ramón Machado Ventura and Minister of Health ...
(Date:7/25/2014)... (PRWEB) July 25, 2014 CMS recently ... health plans for providing inadequate access to prescription drugs. ... to the health and safety of beneficiaries in areas ... coverage determinations, and CMS is taking quick and firm ... Atlantic Information Services webinar, “Avoiding Costly Part D ...
(Date:7/25/2014)... 2014 According to the ... by Vkool.com, this is a comprehensive guide ... some common types of hemorrhoids including:, ... ,     Young children with hemorrhoids , ...     Very large hemorrhoids and chronic hemorrhoids ...
Breaking Medicine News(10 mins):Health News:Famous Supplier Stwd.co.uk Announces Its New Selection of Evening Dresses for Women 2Health News:Healthpointe Offering Occupational Medicine Services in La Mirada 2Health News:MEDICC Congratulates 20 New MDs for the USA Graduating from Cuba’s Latin American Medical School 2Health News:MEDICC Congratulates 20 New MDs for the USA Graduating from Cuba’s Latin American Medical School 3Health News:Aug. 5 Webinar to Offer Strategies for Preventing Rx Access Issues and Avoiding Part D Sanctions 2Health News:Hemorrhoid No More Pdf Review Exposes Jessica Wright's Guide For Treating Hemorrhoids – Vkool.com 2Health News:Hemorrhoid No More Pdf Review Exposes Jessica Wright's Guide For Treating Hemorrhoids – Vkool.com 3
... Parents on How to Help Children Cope, WESTPORT, ... that responds to disasters and works to improve the,lives ... of crisis experts,to assist children and families affected by ... will be posted to San Diego, will provide assistance ...
... People with Diabetes Affected ... by California Wildfires, ALEXANDRIA, Va., ... for people with diabetes who,are affected by the California wildfires. ... supplies to manage their health. 1) Medication and Supplies -- ...
... of children with attention deficit hyperactivity disorder (ADHD) at ... was missing: the fathers., Fabiano, an assistant professor in the ... a graduate assistant at the UB Center for Children ... has helped more than 2,500 children with behavioral, emotional ...
... Fisher,Scientific Inc. (NYSE: TMO ), the world ... ground on a new $17 million (USD) facility ... services in that,country. The facility will focus on ... pharmaceutical samples to,patients participating in clinical trials across ...
... Md., Oct. 23 Martek Biosciences,Corporation (Nasdaq: ... of a,district court in Dusseldorf, Germany, has orally ... company,s patent infringement suit against (i) Lonza,Ltd., (ii) ... Food Ingredients GmbH. In a separate suit against ...
... BOTHELL, Wash., Oct. 23 Cardiac Science,Corporation (Nasdaq: ... cardiac monitoring,and defibrillation products, announced today that it ... Tuesday, October 30, 2007 after the,market close. The ... and,investors for 4:30 p.m. Eastern Time to discuss ...
Cached Medicine News:Health News:Save the Children to Help Youngsters Impacted by California Wildfires 2Health News:Save the Children to Help Youngsters Impacted by California Wildfires 3Health News:Save the Children to Help Youngsters Impacted by California Wildfires 4Health News:Save the Children to Help Youngsters Impacted by California Wildfires 5Health News:Emergency Preparedness for People With Diabetes 2Health News:Getting fathers involved in children's ADHD treatment programs 2Health News:Getting fathers involved in children's ADHD treatment programs 3Health News:Thermo Fisher Scientific Expands Clinical Trial Services Capabilities with New Facility in India 2Health News:Thermo Fisher Scientific Expands Clinical Trial Services Capabilities with New Facility in India 3Health News:Thermo Fisher Scientific Expands Clinical Trial Services Capabilities with New Facility in India 4Health News:Martek Wins German DHA Patent Infringement Actions Against Lonza and One of Nutrinova's Customers in Suits Relating to DHA Product Marketed for Use in Functional Foods and Dietary Supplements 2Health News:Martek Wins German DHA Patent Infringement Actions Against Lonza and One of Nutrinova's Customers in Suits Relating to DHA Product Marketed for Use in Functional Foods and Dietary Supplements 3Health News:Cardiac Science Corporation Schedules Third Quarter Earnings Release and Announces Conference Call 2
(Date:7/24/2014)... July 24, 2014  Alimera Sciences, Inc. (NASDAQ: ... in the research, development and commercialization of prescription ophthalmic ... quarter of fiscal year 2014 financial results after the ... conference call will follow on the same day at ... will be hosted by Dan Myers , President ...
(Date:7/24/2014)... , July 24, 2014  The American ... is supporting its mission to help address audit ... and exclusive agreement to be the information technology ... As the leading provider of billing and business ... unmatched HME industry expertise to support this important ...
(Date:7/24/2014)... MEMPHIS, Tenn. , July 24, 2014  In ... time, one in 25 patients has at least one ... and Prevention. What,s more, many of these infections prove ... are causing an alarming number of patient deaths per ... of industry conversation. Consequently, a stronger ...
Breaking Medicine Technology:Alimera Sciences To Release Second Quarter 2014 Results 2Brightree Joins AAHomecare as Corporate Partner and IT Lead on HME Audit Key 2Employees, Equipment and the Environment: Top Infection Prevention Focuses in Hospitals 2Employees, Equipment and the Environment: Top Infection Prevention Focuses in Hospitals 3
... Paper Reports Value of Specific Nutritional Products is Dependent on ... ... Researchers at,Interleukin Genetics, Inc. (Amex: ILI ), today received ... the annual Congress of the,European Society of Parenteral and Enteral ...
... - Southern,Research Institute and Gallo Research Center ... testing Naltrexone-derived,pyridomorphinan (SoRI-9409) will be published in ... Psychiatry. The publication is available online,today at ... new compound that,causes selective and long-lasting reduction ...
Cached Medicine Technology:Interleukin Genetics Wins International Award for Outstanding Research Published in the Journal, Nutrition 2Interleukin Genetics Wins International Award for Outstanding Research Published in the Journal, Nutrition 3Novel Compound Shows Promise for Treatment of Alcoholism 2Novel Compound Shows Promise for Treatment of Alcoholism 3Novel Compound Shows Promise for Treatment of Alcoholism 4
... ARUP Laboratories is a national reference laboratory ... research and development. ARUP offers an extensive ... medical tests in clinical and anatomic pathology. ... Laboratories' clients include more than half of ...
... is a national reference laboratory and a ... development. ARUP offers an extensive test menu ... in clinical and anatomic pathology. Owned by ... include more than half of the nation's ...
... ARUP Laboratories is a national reference ... laboratory research and development. ARUP offers an ... unique medical tests in clinical and anatomic ... ARUP Laboratories' clients include more than half ...
... national reference laboratory and a worldwide leader ... offers an extensive test menu of highly ... and anatomic pathology. Owned by the University ... than half of the nation's university teaching ...
Medicine Products: