What is an unsafe CO2 level?
unsafe co2 level

Natural processes (respiration, volcanoes) and human activities (fossil fuels/deforestation) both produce carbon dioxide (CO2). Due to a lack of fresh air, indoor environments are particularly susceptible to high CO2 levels. Fresh air helps in the diluting of high CO2 concentrations. With incubator co2 analyzer, experts can take the necessary steps to avoid complications from unsafe CO2 levels. When a significant number of people occupy confined or poorly ventilated indoor places, elevated CO2 levels are a concern. This is because CO2 produced by the occupants’ respiration accumulates over time and has nowhere to go. In malls or other confirmed spaces, co2 analyzer portable machines can be kept to understand when the level is getting higher. 


How chronic high carbon dioxide levels can be fatal


Carbon dioxide (CO2) builds up in the blood, causing hypercapnia. It occurs when the alveoli, which are tiny air sacs in the lungs, are unable to exchange CO2 from the blood for oxygen. This type of respiratory failure can occur quickly as a result of an infection or an opioid overdose, and it is extremely serious, requiring patients to be admitted to critical care. However, in patients with chronic obstructive pulmonary disease, generally known as COPD, obesity, or neuromuscular disease, the problem can become chronic. Even in patients with normal blood pH, the disease is linked to poorer health outcomes, such as more hospitalizations and deaths.

When CO2 levels in the earth below are high, the gas seeps through the cracks in the basement floor and foundation, putting homes at risk.

Outside, carbon dioxide levels are usually not a problem, but they can rise to deadly levels during a volcanic explosion. During eruptions, volcanoes release significant volumes of CO2 and being near it can be potentially fatal. 


The Danger of Carbon Dioxide to Humans


Low quantities of CO2, unlike hazardous PM2.5 pollution, are not harmful. CO2, on the other hand, can displace oxygen at high levels, causing a range of deleterious effects in humans. Carbon dioxide levels in the atmosphere typically range from 350 to 450 parts per million (ppm) (parts per million). However, if humans are trapped in an enclosed, unventilated space, carbon dioxide will build up. CO2 makes people fatigued, inhibits cognitive functions, and produces headaches at moderate amounts. Even small increases in CO2 levels from 600 ppm to 1000 ppm have been shown in studies to reduce cognitive ability and decision making. CO2 can make individuals sick or possibly kill them at very high amounts.


CO2, a greenhouse gas


Inside air is 5 to 7 times more contaminated than outside air, according to a #OQAI study. This is especially concerning because we spend 80 percent to 90 percent of our daily time indoors, particularly at work.

CO2 is the fourth most abundant gas in the Earth’s atmosphere, accounting for 77 percent of GHG emissions. In a normal concentration range, it is a colourless, odourless, and nontoxic gas.


The amount of CO2 emitted by human activities:

The usage of fossil fuels (oil, gas, coal) and land use change are the primary causes (agriculture and deforestation). It is also created by the transportation, industrial, and housing sectors. As a result of these emissions, the concentration of greenhouse gases in the atmosphere rises, causing global warming.

The amount of CO2 emitted by human respiration:

 Unlike human activity, it has no effect on global warming. Because it is highly reliant on inhabitation and air regeneration in the building or room, the concentration of CO2 in indoor air is employed as a measure of the extent of air entrapment.


Indoor Carbon dioxide and its impact on the health of occupants?


Carbon dioxide levels in building indoor air are typically between 350 and 2500 ppm, according to ANSES. The ANSES suggests that schools and other public areas have adequate air renewal to avoid surpassing 1000 parts per million. What is the highest carbon dioxide concentration in the atmosphere that can be tolerated? Indeed, a single exposure of 1000 parts per million (ppm) is enough to cause negative effects and can progress to more major health repercussions, especially if the prescribed CO2 concentrations are not followed.


CO2 and SARS-COV-2

The ability to monitor the air quality of a room has become critical in limiting the spread of COVID-19 in work environments and public gathering places. The HCSP (High Council for Public Health) and the Ministry of Labor have amended their version of the workplace health protocol, requiring each company to assess air quality to ensure that the carbon dioxide level is acceptable. Moreover, according to recent expert assessments from the HSCP and the INRS, controlling indoor air quality (IAQ) is a critical component of transmission prevention.

CO2 levels should be kept as low as feasible in all interior settings to minimise the danger of viral transmission through the air. It’s best to stay below 800 ppm (outside CO2 concentration) and near to 400 ppm. It is recommended that if the threshold is exceeded, you leave the room and freshen the air.

How to improve indoor air quality and the impact of CO2?


Managers of enterprises are required by law to consider the environment in which the inhabitants are located. In addition to adhering to corporate social responsibility (CSR) policies, firms must be concerned about the quality of indoor air in order to improve the working environment and improve the Quality of Life at Work (QWL).

There are numerous approaches to analyse the rate of CO2 to ensure the health and comfort of individuals present in institutions – in corporations as well as in schools:

To lessen the consequences of confinement, it is recommended to open the windows and doors on a frequent basis.

Have a good ventilation system: to provide good air renewal, an effective ventilation system is recommended.

Controlling pollution sources: There are numerous causes of pollution, all of which must be minimised. It is critical to select furniture wisely, use “healthy” cleaning agents, and isolate photocopiers, among other things. More information can be found here.

Take measurements with air quality sensors: these sensors detect the amounts of carbon dioxide (CO2) and other contaminants in a room, allowing you to make informed judgments and implement appropriate corrective actions.


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