Sign in

Houseplants Help Filter Harmful Air Pollution

Houseplants can neutralize harmful ozone, making indoor air cleaner, according to a new study.

Ozone, which is the main component of smog, forms when high-energy light, such as the ultraviolet light from the sun, breaks oxygen bonds, ultimately resulting in O3, three atoms of oxygen joining together. When formed higher up in the atmosphere, the ozone layer protects us from harmful UV rays. Ground-level ozone is not so pleasant.

While indoor ozone is a bigger problem in many developing countries, owing to the burning of biomass for cooking and heat in poorly ventilated quarters, the colorless gas can infiltrate from outdoors into offices and homes even in developed countries. In addition, copy machines and printers, along with other equipment, can boost ozone concentrations indoors, the researchers say.

Leafy air filters

To figure out if green plants can clear the indoor air, Dennis Decoteau of Penn State's Department of Horticulture and his colleagues placed three common houseplants—a snake plant, a spider plant and a golden pothos—into chambers in a greenhouse. Ozone was then injected into the chambers at 10 times normal indoor amounts and concentrations were measured every few minutes until they were reduced to about 3% of the initial amount.

While it took 75 minutes for ozone levels to come down in plantless chambers, air in chambers with plants reached the target in just 50 minutes. He speculates the plants take in the ozone through their stomates, which are tiny pores used for gas exchange, and then break it down once inside the plant.

"Future research would look at how many plants you need in an office environment and it would look at more realistic levels of ozone," Decoteau told LiveScience. In addition, some plants might be better than others at zapping ozone.

Plant positives

Here are some other reasons to keep indoor shrubbery around:

  • Plant-filled rooms contain up to 60% fewer airborne molds and bacteria than rooms without plants, studies show.
  • People who work in offices with windows and plants are happier than others, according to a study of 450 office workers in Texas and the Midwest. In fact, 82% of the participants who worked with plants and windows around said they felt "content" or "very happy," compared with 58% in windowless plantless offices who said the same.
  • Plants seem to make people more contemplative and self-reflective, according to one ethnologist.

Decotau's study was detailed in a recent issue of the journal Hort Technology.

By Jeanna Bryner, LiveScience, September 8, 2009

 

Skip

Welcome to the new SkinInc.com!

Delivering the best information on the spa, skin care and wellness industry is our passion, and we’ve worked hard to design a powerful new website that incorporates cutting-edge technology to bring you:

  • Mobile-friendly Design
  • Integrated Sample Request
  • Refreshed Look and Feel
  • Dynamic Content
  • Free Registration

Mobile-friendly Design

Providing a unified experience from mobile to desktop, responsive design allows you to access Skin Inc. content from any device, whether you’re in the treatment room, at home or on the go!

Integrated Sample Request

Visit Featured Product pages to quickly and easily identify new suppliers and request product samples and information.

Dynamic Content

Articles are now linked with relevant products so you can find the products and treatments you need to provide the best results for your clients.

Free Registration

Create your user account to gain unlimited access to Skin Inc.’s unparalleled content.

Enjoy the New SkinInc.com!

Thank you for joining the Skin Inc. community of passionate skin care professionals. We look forward to providing you the best information to enhance your career!