Category Archives: indoor airpollution

indoor airpollution

Avoid thick air in classrooms

CO2-level in classrooms

CO2-level in classrooms is often too high

In assessing the indoor climate in classrooms, the Department of Environmental Protection Nuremberg/Germany can truly have a say. The municipal employees had carried out from 2012 to 2013 series of measurements in different school categories and also analyzed the conditions. The focus was on the carbon dioxide (CO2) in room air compared to the outside air. The relative humidity and room temperature were recorded in addition to the CO2 content with data loggers. In a nutshell, the result shows the following: indoor air quality, which is commonly found in classrooms is, at least hygienic striking. In many cases it is to be regarded as unacceptable.
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Manipulative spraying of fragrances in the interior

manipulative spraying of fragrances in the interior

spraying of fragrances poses trouble

The use of fragrances in cosmetics, detergents and cleaners has long been known. The conscious and manipulative spraying of fragrances in the interior, however, is more and more fashionable. The fragrance industry has evolved in recent years into a major economic factor. The global turnover is estimated at 18 billion dollars. In Germany, the German Association of the fragrance manufacturer represents the interests of its members. Approx. 3,000 different chemical fragrances are known. Thirty of them are produced in Europe in quantities greater than 1,000 tons per year. For more 750 perfumes annual production is estimated to be longer one ton. In contrast, the number of at least half a million perfume allergy sufferers in Germany, who have suffered greatly from the scenting. Acquired sensitization can not be cured medically. Continue reading

Deadly threat – Carbon monoxide formation in the pellet storage room

deadly threat in the pellet-storage-room

CO could arise

(Berlin) The Federal Institute for Risk Assessment in Germany (BfR) warns of a deadly threat in homes. Both the storage of wood pellets and wood chips, the highly toxic carbon monoxide may form. This is due to auto-oxidation processes in certain wood components that are triggered during the preparation of the wood by crushing, heating and drying. From unsaturated fatty acids, in addition to carbon monoxide (CO) are formed various aldehydes. CO is particularly insidious because it is colorless and odorless. At risk are not only the residents but also the maintenance personnel of heating systems. BfR deaths have been reported by people who had been in a pellet storage room. Continue reading

Airtightness measurement using the blower door method

Blower-Door

Blower Door system in practice

The requirement of airtight building envelope is a key concern for the German Energy Saving Ordinance (EnEV). Therefore, the standard calls after completion of the construction project, an acceptance test for air tightness. With the blower door technology now a standard airtightness measurement method was created. The DIN EN 13829 regulates the organizational processes, the actual measurement procedure and the necessary instrumentation. With Blower Door can already be seen during construction leaks in the building envelope and eliminate cost-effective. Continue reading

2-chlorpropane increasingly noticeable indoors

2-chlorpropane

2-chlorpropane found in a daycare center

The building department of Stuttgart (Germany) leads for new buildings and renovations in schools and daycare centers routinely measuring pollutants in indoor environments. These precautionary measures proved in case of daycare in Uhrlbach a stroke of luck. It has been found in the laboratory analysis of highly volatile substance (VVOC) 2-chlorpropane. Maybe you would not yet taken the result at the Stuttgart authority seriously, if not available in schools and nursery in Bavaria, the 2-chlorpropane would have noticed. Then, the Ad-hoc-working group of the interior Commision of Federal Environment Agency had responded and recommended values for the tear gas. According to the protocol of the meeting from 22./23. October 2012 stated as a guide-II 8mg/m3 and as a guide-I 0,8 mg/m3. Insiders know that the indicative “guide-I” is considered to be precautionary, to be taken any action. Continue reading

Certified sampler for indoor pollutants

a proper sampling set

a proper sampling set

During the seminar “search and source quality indoor pollutants” on 09.16.2013 in Graefenberg/Germany participants heard from CEO Dr. Thomas Wirkner that Analysis Aurachtal is working on a concept for the qualification program “Certified sampler”. Building-biologists and other professionals in the field “interior analytics” thus improve their market opportunities with private and public clients, who are increasingly demanding a qualification card in the tender. Continue reading

Mercury: If the compact fluorescent lamp breaks

mercury in compact flourescent lamps

do not break a bulb

Mercury has unexpectedly come back into the public consciousness. Thanks this is the Europe-wide introduction of “energy saving bulbs”. But few know that many other everyday products are containing the heavy metal, for example, in flat panel displays, timers, fax machines, older boilers, ovens and freezers. Button batteries in two weight percent mercury may still be present, otherwise the use in batteries since 2001 is no longer allowed. Continue reading

Why wood preservatives are still an issue!

using wood preservtives?Wood exerts on many people a fascinating effect. Nevertheless, in Germany has the idea impressed that wood is always in danger of being destroyed by fungi or bacteria. Not for nothing is driving many homeowners in the construction markets, to buy chemical preservatives. After the wood preservative scandals in the seventies and eighties, some chemicals may however only be used outdoors. Continue reading

Look, why she’s sitting on the floor

my toxic couch
Toxic flame retardant chemicals are saturated in the foam inside our furniture. These chemicals are linked to serious health effects and are worthless in preventing furniture fires. We need better regulation of these chemicals to address this problem. That’s why she’s sitting on the floor.
Published on Feb 7, 2013: http://www.youtube.com/watch?feature=player_embedded&v=mvBkVfjcGpc

There are solvent-free paints and coatings?

paint and coating
Solvents are known, used in primers, adhesives, paints and coatings. Depending on the composition they emit gases of different lengths. Volatile solvents have an irritating habit that they stink and can irritate the mucous membranes. In conventional coatings is between 50% and 70% of solvent are present. Meanwhile, the industry found it in search of a less obvious solvents and is relying increasingly on glycol. Continue reading