Volatile organic compound also known as VOCs are common indoor pollutants composed of organic chemicals that evaporate into the air easily at room temperatures. VOCs often cause chemical odors, respiratory irritation, headache, and other indoor air quality related complaints. At certain high levels they can be dangerous. These chemicals are released by paints, paint thinners, varnish, new carpets, new cabinets and furniture that contains particle board, household cleaners and air fresheners, gasoline, improperly vented combustion devices, photocopier machines, blueprint machines, and many other sources. All buildings contain some level of volatile organic compounds, determining what are normal levels and what are elevated levels is important in diagnosing a buildings indoor air quality. The following information gives some idea of what are normal and what are elevated VOC levels.
Global consensus has resulted in the emergence of preliminary guidelines or tVOC standards for IAQ (Australian NHMRC, 1993; Finnish society of IAQ, 1995: Seifert, 1999: Hong Kong EPA, 1999; Japan MoH, 2000).
Depending on Location (home, school, etc. ), recommended levels range from 200 to 1300 ug/m3 or about 50 to 325 ppb or .05 to .325 ppm (Toluene units) or approximately 100 to 650 ppb .1 to .650 ppm isobutylene units.
By all accounts the IAQ tVOC threshold for normal environments should not exceed 500 ppb (0.5 ppm) Toluene units, which is equivalent to 1000 ppb (1ppm) isobutylene units.
Field experience suggests the following guide for the use of PIDs to assess indoor environments:
< 100 ppb or (.1ppm) isobutylene units: normal outdoor air
100-400 ppb or (.1-.4ppm) isobutylene units normal indoor air
500 + ppb or (.5ppm) + isobutylene units: indicates potential of IAQ contaminants
Reference RAE Systems Application Note AP-212
In summary the above states that the general consensus among most experts is that recommended indoor levels of total volatile organic compounds is .1 to .6 ppm isobutylene units.
Indoor levels above .5ppm isobutylene units indicates potential contamination and levels should not exceed 1ppm isobutylene units.
Please keep in mind that the above applies to homes offices and schools etc. Exposure limits allowed in industrial settings will be much higher.
Voc Volatile Organic Compound
Lots of people have no idea whatsoever as to just what the acronym VOC stands for. To bring you up to par on what this stands for, VOCs are volatile organic compounds that are emitted from many household items, namely furniture and walls, and can also be chemicals that we drag in from outside, like car pollution that seeps in when you open the door, or pollution and chemicals that have attached to the bottoms of our shoes and enter our homes as we walk inside.
In fact, recent studies by the EPA (Environmental Protection Agency) have proven that the pollution inside of our homes, due to these VOCs, is actually two to three times more prevalent than the pollution that we breathe outside. Fortunately there are ways to win the battle against VOCs, but to effectively do so you need to start from the bottom up and wage a firm war against volatile organic compounds—choosing VOC-free area rugs is just one of many ways you can choose to win this fight against interior pollution.
What to avoid
VOCs can be emitted from thousands of products that you have in and around your home. From the gasses that are emitted from the paint on your walls, to the finishing on your furniture, even to the glue that holds your carpeting in place, not to mention the stain protectors that most carpeting is treated with and the chemicals that are used to clean your carpets by the local cleaning company. There are some ways that you can battle VOCs and try to minimize the interior emission of these health hazardous chemicals that can cause long term health issues over a large portion of time.
Only use all-natural cleaners and sprays to clean your home
Assure that when you have your carpeting and area rugs cleaned the chemicals are natural and eco-friendly
Remove your shoes when entering your home—shoes can drag in hundreds of pollutants that can easily contribute to the VOC levels in your home
Open your windows and air out your home at least several times per week
Add more natural plants to your home, like ferns and spider plants, which have been proven to consume many VOC gases
Vacuum as often as possible, at least once per week, and at least twice per week if you have active pets
Major changes you can make to eliminate VOCs
If you are ready for massive changes there are other things that you can do to rid your home of VOCs. Buy carpeting for your home made from all-natural and environmentally friendly materials, and use tacks or carpet nails instead of glue to hold your new carpeting down. Only buy chemical-free and VOC-free, EPA approved furnishings, like all natural area rugs and chairs, tables, etc., that have been certified as VOC-free. Keep your eye out for any thing that can be placed in your home that may emit VOCs. Read up on the issue often and find places that offer all-natural materials furnishings that won't emit these harmful gases in your home.
Both Daryl Watters & Michael Lazar are contributors for EditorialToday. The above articles have been edited for relevancy and timeliness. All write-ups, reviews, tips and guides published by EditorialToday.com and its partners or affiliates are for informational purposes only. They should not be used for any legal or any other type of advice. We do not endorse any author, contributor, writer or article posted by our team.
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