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Older, cheaper vacuum cleaners release more bacteria and dust

Date:
January 5, 2012
Source:
American Chemical Society
Summary:
Some vacuum cleaners -- those basic tools for maintaining a clean indoor environment in homes and offices -- actually contribute to indoor air pollution by releasing into the air bacteria and dust that can spread infections and trigger allergies, researchers report in a new study.

Some vacuum cleaners -- those basic tools for maintaining a clean indoor environment in homes and offices -- actually contribute to indoor air pollution by releasing into the air bacteria and dust that can spread infections and trigger allergies, researchers report in a new study. It appears in ACS' journal Environmental Science & Technology.

Lidia Morawska and colleagues explain that previous studies showed that vacuum cleaners can increase levels of very small dust particles and bacteria in indoor spaces, where people spend about 90 percent of their time. In an effort to provide more information about emission rates of bacteria and small dust particles, the scientists tested 21 vacuum cleaners sold in Australia. The vacuums came from 11 manufacturers, included those marketed for household and commercial use, ranged in age from six months to 22 years and cost from less than $100 to almost $800. They looked at the effects that age, brand and other factors had on the amount of small particles and bacteria released into air.

All of the vacuums released some fine dust and bacteria into the air. Surprisingly, vacuums with so-called High-Efficiency Particulate Air (HEPA) filters in some cases released only slightly lower levels of dust and bacteria. Newer and more expensive vacuum cleaners were generally less polluting than older or less expensive models.


Story Source:

The above story is based on materials provided by American Chemical Society. Note: Materials may be edited for content and length.


Journal Reference:

  1. Luke D. Knibbs, Congrong He, Caroline Duchaine, Lidia Morawska. Vacuum Cleaner Emissions as a Source of Indoor Exposure to Airborne Particles and Bacteria. Environmental Science & Technology, 2012; 46 (1): 534 DOI: 10.1021/es202946w

Cite This Page:

American Chemical Society. "Older, cheaper vacuum cleaners release more bacteria and dust." ScienceDaily. ScienceDaily, 5 January 2012. <www.sciencedaily.com/releases/2012/01/120104115102.htm>.
American Chemical Society. (2012, January 5). Older, cheaper vacuum cleaners release more bacteria and dust. ScienceDaily. Retrieved July 25, 2014 from www.sciencedaily.com/releases/2012/01/120104115102.htm
American Chemical Society. "Older, cheaper vacuum cleaners release more bacteria and dust." ScienceDaily. www.sciencedaily.com/releases/2012/01/120104115102.htm (accessed July 25, 2014).

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