Navigation Links
34 percent of Galician secondary schools exceed maximum recommended radon levels
Date:2/16/2011

Researchers from the University of Santiago de Compostela (USC) have analysed levels of radon, a natural radioactive gas, in 58 secondary schools in Galicia. The results show that 34% of these schools exceed the limit of 400 Bequerels/m3 recommended by the European Union. Excessive inhalation of radon is associated with lung cancer.

"Out of all the secondary schools where samples were taken, 34% had radon levels in excess of 400 Bequerels/m3 in some of their classrooms or offices", Juan Jos Llerena, co-author of the study and a member of the USC's Radiation Analysis Laboratory, tells SINC. "In addition, 15% had some point where figures were in excess of 800 Bq/m3", warns the expert.

In order to carry out the study, which has been published recently in the Journal of Environmental Radioactivity, the team took 374 measurements using activated carbon canisters and other detectors (requiring both long and short periods of exposure) in 58 secondary schools in the four provinces of Galicia.

"Corrective measures must be put into place in Galicia as well as other regions of Spain, and the number of centres available to measure radon and extend these preventive measures and actions to nurseries and primary schools must also be increased", says another of the study's authors, Ignacio Durn, who is the group coordinator.

The European Union recommends maximum air radon levels of 400 Bq/m3 inside buildings. If this level is exceeded, actions should be taken to reduce it. This regulation applies to properties built before 1990. The recommended levels for those built after this date are 200 Bq/m3.

The World Health Organisation goes even further, and has reduced the safe limit to 100 Bq/m3, since a positive correlation has been found between the levels of this gas inside buildings and lung cancer.

Measure and correct without causing panic

The researchers' intention is not to alarm the population, but they say that corrective measures should be taken to reduce high radon levels, "which are fairly effective and cost relatively little if they are put into place during the construction of buildings".

These corrective actions range from more effective management of ventilation in buildings in the least serious cases right through to directly extracting the gas from the subsoil (before it manages to seep inside the premises) in cases where levels are higher. Radon filters in from the ground through cracks in the foundations, walls and the plumbing in bathrooms. Including architectural barriers that are impermeable to the gas are recommended in newly constructed buildings.

Llerena explains the process: "The first thing is to identify whether there is a problem. After this, detailed measurements will be taken to find out the entry points for the gas. On the basis of these data, suggestions will be made about whether simply to improve ventilation or to carry out more in-depth work, for example making the building gas-impermeable or draining radon from the subsoil before it can get into the building. Each building is a world unto itself".

The soils in Galicia have high potential for radon emission, since they overlie an area of fractured granite. Exposure to this natural radioactive element occurs, above all, as a result of inhaling it in poorly-ventilated premises, although it can also be ingested if it is present dissolved in water.


'/>"/>

Contact: SINC
info@plataformasinc.es
34-914-251-820
FECYT - Spanish Foundation for Science and Technology
Source:Eurekalert  

Related biology technology :

1. 34 percent of Galician secondary schools exceed maximum recommended radon levels
2. Codexis Grows Revenue 35 Percent in Third Quarter; Raises 2010 Outlook
3. ReVisions Fenretinide (RT-101) Reduced Incidence of Choroidal Neovascularization by More Than 50 Percent in Patients With Geographic Atrophy in a Phase 2b Trial
4. Tecnalia investigates ecological cement that cuts CO2 emissions by up to 100 percent
5. ClearTrial to Demonstrate How a Top 20 Sponsor Achieved -1 Percent Cost Variance Across Their $130M Clinical Portfolio at Major Industry Conference
6. In 2012, Stelara and Briakinumab Will Capture 22 Percent of the Biologics Share in the Moderate to Severe Psoriasis Drug Market
7. ThermoGenesis Reports 15 Percent Increase in First Quarter Revenues; Improved Bottom Line
8. Recently Approved Onglyza Is Covered by 44 Percent of Commercial Health Plans But Less Than One Percent of Medicare Plans for The Treatment of Type 2 Diabetes
9. New Assay Detects 100 Percent of Stage I, II and III Colon Cancers in Pre-Clinical Trials
10. Nearly 70 Percent of Health Professionals Support Biotechnologys Use in Food Products
11. R&D Spending by U.S. Biopharmaceutical Companies Increases 3 Percent in 2008
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
34 percent of Galician secondary schools exceed maximum recommended radon levels
(Date:6/24/2016)... ... 24, 2016 , ... Researchers at the Universita Politecnica delle Marche in Ancona ... or pleural mesothelioma. Their findings are the subject of a new article on the ... are signposts in the blood, lung fluid or tissue of mesothelioma patients that can ...
(Date:6/23/2016)... CAMBRIDGE, Mass. , June 23, 2016 /PRNewswire/ ... the development of novel compounds designed to target ... compound, napabucasin, has been granted Orphan Drug Designation ... in the treatment of gastric cancer, including gastroesophageal ... cancer stemness inhibitor designed to inhibit cancer stemness ...
(Date:6/23/2016)... June 23, 2016 Houston Methodist Willowbrook ... Cy-Fair Sports Association to serve as their official ... Houston Methodist Willowbrook will provide sponsorship support, athletic ... with association coaches, volunteers, athletes and families. ... Cy-Fair Sports Association and to bring Houston Methodist ...
(Date:6/23/2016)... 2016  The Biodesign Challenge (BDC), a university competition ... harness living systems and biotechnology, announced its winning teams ... New York City . The ... projects at MoMA,s Celeste Bartos Theater during the daylong ... senior curator of architecture and design, and Suzanne ...
Breaking Biology Technology:
(Date:6/2/2016)...   The Weather Company , an IBM Business (NYSE: ... capability in which consumers will be able to interact with ... via voice or text and receive relevant information about the ... Marketers have long sought an advertising solution that can create ... relevant and valuable; and can scale across millions of interactions ...
(Date:5/20/2016)... , May 20, 2016  VoiceIt is ... partnership with VoicePass. By working together, ... experience.  Because VoiceIt and VoicePass take slightly different ... engines increases both security and usability. ... excitement about this new partnership. "This ...
(Date:5/3/2016)... 3, 2016  Neurotechnology, a provider of high-precision ... Automated Biometric Identification System (ABIS) , a complete ... MegaMatcher ABIS can process multiple complex biometric transactions ... of fingerprint, face or iris biometrics. It leverages ... and MegaMatcher Accelerator , which have been ...
Breaking Biology News(10 mins):