There are substances in the air which, at high concentrations, can lead to harmful effects on health or the environment. This depends primarily on the dose and the duration of exposure or enclosure. Formaldehyde is a volatile organic compound (2) (VOC) released in small concentrations from many commonly used products : insulating foam, lacquers, glues, varnishes, inks, resins, paper, household products, pesticides, certain types of chipboard and plywood. It is also used in some cosmetics and textiles.
The concentration of formaldehyde in the air was measured in various environments : exterior, intermediate (libraries, shopping centres, train stations) and interior (individual homes). In around 10% of the studied locations, the level of formaldehyde was found to be greater than 50 µg m-3 (3). The World Health Organisation (WHO) estimates that 100 µg m-3 for 30 minutes corresponds to acute exposure, the recommended value of formaldehyde exposure in an interior environment. According to the results obtained by the Physical Chemistry of the Atmosphere Laboratory (ULP/CNRS joint research unit) in collaboration with the Pneumology Department of the Strasbourg University Hospitals (4), the researchers of these two teams suggest a new value of between 50 and 60 µg m-3 for chronic exposure. Effectively, when people suffering from asthma stay at home, they are constantly exposed to low concentrations of formaldehyde over a period of hours and not intermittently for a period of 30 minutes. This study was performed in the Lower-Rhine region on a population of non-smoking, allergic asthmatics not exposed to formaldehyde in their professional life compared to a control population.
The obtained results, supported by the Région Alsace, the French Environment and Energy Management Agency (ADEME) and the French Ministry for Regional Planning and Environment, raises the question on whether manufacturers of construction materials, furniture and maintenance products will take this new recommendation into account. It has also provided new clues in the study of allergic reactions to atmospheric pollutants present in our everyday environment.
Isabel Pellon Zarragoitia | alfa
Inflammation Triggers Unsustainable Immune Response to Chronic Viral Infection
24.10.2016 | Universität Basel
Resolving the mystery of preeclampsia
21.10.2016 | Universitätsklinikum Magdeburg
Terahertz excitation of selected crystal vibrations leads to an effective magnetic field that drives coherent spin motion
Controlling functional properties by light is one of the grand goals in modern condensed matter physics and materials science. A new study now demonstrates how...
Researchers from the Institute for Quantum Computing (IQC) at the University of Waterloo led the development of a new extensible wiring technique capable of controlling superconducting quantum bits, representing a significant step towards to the realization of a scalable quantum computer.
"The quantum socket is a wiring method that uses three-dimensional wires based on spring-loaded pins to address individual qubits," said Jeremy Béjanin, a PhD...
In a paper in Scientific Reports, a research team at Worcester Polytechnic Institute describes a novel light-activated phenomenon that could become the basis for applications as diverse as microscopic robotic grippers and more efficient solar cells.
A research team at Worcester Polytechnic Institute (WPI) has developed a revolutionary, light-activated semiconductor nanocomposite material that can be used...
By forcefully embedding two silicon atoms in a diamond matrix, Sandia researchers have demonstrated for the first time on a single chip all the components needed to create a quantum bridge to link quantum computers together.
"People have already built small quantum computers," says Sandia researcher Ryan Camacho. "Maybe the first useful one won't be a single giant quantum computer...
COMPAMED has become the leading international marketplace for suppliers of medical manufacturing. The trade fair, which takes place every November and is co-located to MEDICA in Dusseldorf, has been steadily growing over the past years and shows that medical technology remains a rapidly growing market.
In 2016, the joint pavilion by the IVAM Microtechnology Network, the Product Market “High-tech for Medical Devices”, will be located in Hall 8a again and will...
14.10.2016 | Event News
14.10.2016 | Event News
12.10.2016 | Event News
25.10.2016 | Life Sciences
24.10.2016 | Earth Sciences
24.10.2016 | Life Sciences