BlueZone. ANESTHETIC COLLECTION SERVICE. Saving our neighborhoods every day.

Health Concerns to Citizens

Fact! Hospitals vent toxic anesthetics into the air we breathe every day

When hospitals administer anesthetics to a patient during surgery, the patient adsorbs less than 5% of the total. What happens to the remaining 95% of these anesthetics? The operating room air scavenging system simply exhausts it into the environment outside.

In North America alone, there are approximately 54,000 operating rooms releasing applied anesthetics, which amounts to about 4 million tonnes of CO2 each year, the equivalent of over 1 million cars. Of course, the continued growth of these emissions will follow any growth in the anesthetics market.

Fact! Vented anesthetics affect air quality and human health issues

Once vented from the hospitals to the atmosphere, the anesthetics, being stable halogenated ethers, are:

  • Toxic and potentially lethal when high dosages are inhaled. There is a concern that vented anesthetic gas is detrimental to human health which is a huge challenge for both the medical community and general public.
  • About 7 times heavier than air, causing them to drop down to the ground. This has an adverse effect on air quality and human health issues in neighborhoods close to hospitals.
  • Potent greenhouse gases with a global warming impact of up to 3,766 times greater than carbon dioxide (CO2).

Risking neighborhood safety!

Vented anesthetic gases are extremely poisonous, 7 times heavier than air and very stable, which means that they drop down to ground level and have an adverse impact on air quality and human health issues in hospital neighborhoods.

These emissions are recognized under the Occupational Health & Safety Act as a workplace hazard and have the potential to affect staff, hospital visitors, patients, maintenance workers and the local community, etc. Dumping them into the city streets for everyone to breathe hardly seems like an acceptable solution.

Impacting our Environment!

CO2 stack.png
Scientific Fact: Anesthetics are potent greenhouse gases that carry 20-yr global warming impacts up to 3,766 times more powerful than carbon dioxide (CO2).
In any given year, a single average-sized hospital releases anesthetic gas emissions equal to that of approximately 400 cars.
Each hospital would have to plant approximately 125,000 trees each year to offset these emissions.
Concern: The anesthetic emissions produced by hospitals each year are expected to double.
The global anesthetic market grows about 10-15% every year. This means that it doubles every 7 to 10 years, as do their emissions of anesthetic vapours.

The Simple Solution: Deltasorb® Anesthetic Collection Service

Hospitals could be using the Deltasorb® Anesthetic Collection Service at minimal cost to stop the emissions of toxic anesthetics into the atmosphere. The Deltasorb® Anesthetic Collection Service provides a safe and environmentally friendly way to handle the venting of harmful anesthetic gases. The patented Deltasorb® system captures the halogenated anesthetics right before they are vented. The canister is then brought back to our facility for processing.

As a Concerned Citizen, what can you do?

It is very important that hospitals start to recognize the issues concerning the venting of anesthetics. If you would like to help spread the word and raise awareness of the health risks and environmental impact you can...


Rick Paradis, RRT, RRCP, B Adms. "Our hospital is pleased to pioneer this unique sustainable Canadian invention - a first in the world."...
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Blue-Zone Story

Deltasorb® Anesthetic Collection Service Launches New Website

Blue-Zone Technologies is pleased to announce the launch of its new Deltasorb® Anesthetic Collection Service website. The website is a resource...


22) When is the best time to change a canister?

As a general rule, the best time of day to change canisters is at the end of scheduled surgery. Blue-Zone works with client hospitals to develop the ...

Contact Info

14-84 Citation Drive Concord (Toronto), ON Canada L4K 3C1
Tel: (905) 761-1224 Fax: (905) 761-3371

Articles of Interest

  • Blue Zone

    Hospital filtration system traps gas

    Eight years ago, Doug Bodie, an anesthesia assistant at Kings­ton General Hospital, made a surprising discovery... (Kingston Whig Standard, March 18 2011) ...

  • Blue Zone

    California passes cap and trade bill

    In a preview of national regulation to come, California passes legislation intended to regulate the emission of greenhouse gases. Healthcare facilities may soon face additional costs associated with the venting of anesthetics. ( ...

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    Green Solutions - A Greener Way to Get Anesthetized

    From the O.R. to the ocean, Canada's greenest employers are working toward solutions for some surprising problems....