Scientists from the University of Arizona have discovered the answer to the question that tormented generations of housewives and philosophers who reflect on the origin of dust balls on the floor, under couches and behind cabinets.
A study published in the journal Environmental Science & Technology found that most household dust comes from the outside. Specifically, David Layton and Paloma Beamer, the study authors, suggest that house dust is composed of a mixture of substances that includes a dead human skin, the fibers of carpets, cushions and padded furniture parts and soil particles and other substances. These particles can be lead, arsenic and other potentially hazardous substances that are particularly harmful to children that place dusty toys and other objects in the mouth.
Scientists study found that over 60 percent of household dust comes from the outside. Also, nearly 60 percent of arsenic in house dust comes from the arsenic contained in the air, and the rest of the soil which brings the house shoes. This study was conducted using a computer model that follows the distribution of contaminated soil particles in the air.
The dust suppression is very important thing for better living condition. Dust suppression is evenmore important when it comes to health, since many people are allergic to dust. The significant portion of dust comes from carpets.
Therefore, reduction of carpets ( area covered and carpet thickness ) can reduce the dust. Still, the biggest portion of dust comes from outside. We can reduce pollution from outside dust by planned ventilation and installation of air tight windows.
Source: Eureka Science News