By: Manar Fawzi Bani Mfarrej , Nida Ali Qafisheh and Moez Mohamed Bahloul

Environmental Health & Safety Program, Abu Dhabi University, Abu Dhabi, UAE. Laboratoire des Sciences de l’Environnement et Développement Durable (LASED), LR18ES32, University of Sfax, Sfax, Tunisia.

Indoor Air Quality in UAE Homes

Overall, the current study has revealed that IAQ in selected houses located in Abu Dhabi, UAE is normal for VOCs and CO, whereas can be considered as bad for CH2O and CO2 concentrations. Therefore, it is highly recommended to frequent open doors and windows during ventilation time or to use mechanical ventilation systems. Additionally, it is worth noting that, some particles in the air such as dust can reach high concentrations due to outdoor activities and Saharan advection. Therefore, a constant monitoring of IAQ is required for better health conditions of homes’ residents.

This study provides a baseline for further investigation of IAQ in UAE and to determine its impact on residents’ health. In the same context, additional research is needed to develop suitable mitigation strategies for improving indoor air quality in different residential compartments that can help improve the overall health condition.

In conclusion, this study has highlighted the importance of maintaining a good indoor air quality in residences located in Abu Dhabi, UAE. Results showed that VOCs and CO had normal levels, whereas CH2O and CO2 concentrations exceeded standard values. Therefore, it is recommended to ensure sufficient ventilation by frequent opening doors and windows or using mechanical ventilation systems. Additionally, constant monitoring of IAQ is necessary for better health conditions of homes’ residents. Further research should be conducted to develop suitable strategies for improving indoor air quality in residential areas and determining its impact on residents’ health.

On the contrary, there is serious pollution in the UAE mainly caused by exploitation of the natural resources, rapid population growth, and high traffic density. While there are measures being taken by the UAE government to improve air quality, pressures from both natural and man-made factors are still significant.

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Carbon monoxide (CO) poisoning is a significant health risk associated with emissions from cookstoves and heaters. The mechanism of CO poisoning is rooted in its interaction with hemoglobin in the blood. Hemoglobin is responsible for carrying oxygen from the lungs to the body’s tissues. When inhaled, CO binds to hemoglobin, forming carboxyhemoglobin (COHb), which has a 200 times greater affinity for hemoglobin than oxygen. This high affinity prevents oxygen from binding to hemoglobin, leading to a reduction in the amount of oxygen that reaches the body’s tissues [3].

The symptoms of CO poisoning are often misleading as they are non-specific and can easily be mistaken for other conditions such as flu or food poisoning. Initial symptoms include headache, dizziness, weakness, nausea, and confusion. These symptoms result from the body’s response to decreasing oxygen levels. The severity of symptoms depends on the CO concentration, duration of exposure, and the individual’s health status.

In severe cases, high levels of COHb can lead to more serious symptoms such as loss of consciousness, arrhythmias, seizures, or even death. Long-term exposure to lower levels of CO can also cause significant harm, leading to lasting neurological and cardiac complications.

The effects of CO poisoning can be particularly severe in individuals with pre-existing health conditions, such as heart and lung diseases. These individuals are at a higher risk because their bodies are already strained due to their underlying conditions, making them less able to cope with reduced oxygen levels.

Pregnant women and their unborn babies are another group at high risk. CO can cross the placenta, causing harm to the developing fetus. In fact, fetal hemoglobin has an even higher affinity for CO than adult hemoglobin, meaning that CO poisoning can lead to severe fetal hypoxia, potentially resulting in long-term neurological damage or even fetal death [4].

Introduction

CO emissions from cookstoves and heaters pose significant health risks, particularly in poorly ventilated spaces where the gas can accumulate to dangerous levels [1]. The World Health Organization (WHO) estimates that over 3.8 million premature deaths annually can be attributed to household exposure to smoke from dirty cookstoves and fuels, which often includes CO [2].

Carbon Monoxide Poisoning

When inhaled, CO binds to hemoglobin in the blood, forming carboxyhemoglobin (COHb), which interferes with the blood’s ability to carry oxygen. High levels of COHb can lead to tissue hypoxia, causing symptoms such as headache, dizziness, weakness, nausea, confusion, and even death in severe cases [3].

Chronic Low-Level Exposure

Research shows that chronic exposure to low levels of CO can also have adverse health effects. These may include exacerbation of cardiovascular diseases, neurological effects, and potentially impaired fetal development [4].

Cookstoves and Heaters as Sources of CO

Cookstoves and heaters, especially those that use biomass or kerosene, are significant sources of indoor CO. Inefficient combustion and poor ventilation can lead to high CO concentrations indoors [5].

Mitigation Strategies

Several strategies can mitigate the risks associated with CO emissions from cookstoves and heaters. These include improving stove design for more efficient combustion, using cleaner fuels, and improving ventilation in homes [6].

Testing for CO

Testing for carbon monoxide in your home is of paramount importance for the safety and well-being of your family. Carbon monoxide is a colorless, odorless gas that can be produced by common household appliances like furnaces, stoves, and water heaters. When it accumulates in enclosed spaces, it can lead to carbon monoxide poisoning, which can be life-threatening. Regular testing with carbon monoxide detectors ensures early detection of any leaks or faulty appliances, allowing you to take immediate action to ventilate the area, fix the problem, or evacuate if necessary. It’s a simple yet critical step in safeguarding your home against this silent but deadly threat, providing you with peace of mind and a safer living environment.

Conclusion

CO emissions from cookstoves and heaters pose substantial health risks, particularly in settings with poor ventilation. Efforts to reduce these emissions and their associated health impacts should focus on improving stove efficiency, promoting cleaner fuels, and enhancing indoor ventilation.

References

1. U.S. Environmental Protection Agency. (2021). Carbon Monoxide’s Impact on Indoor Air Quality. https://www.epa.gov/indoor-air-quality-iaq/carbon-monoxides-impact-indoor-air-quality
2. World Health Organization. (2018). Household air pollution and health. https://www.who.int/news-room/fact-sheets/detail/household-air-pollution-and-health
3. Centers for Disease Control and Prevention. (2019). Carbon Monoxide Poisoning. https://www.cdc.gov/co/faqs.htm
4. Hampson, N. B., & Weaver, L. K. (2007). Carbon monoxide poisoning: a new incidence for an old disease. Undersea & hyperbaric medicine. https://www.ncbi.nlm.nih.gov/pubmed/17952690
5. Bruce, N., Perez-Padilla, R., & Albalak, R. (2000). Indoor air pollution in developing countries: a major environmental and public health challenge. Bulletin of the World Health Organization. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2560841/
6. World Bank. (2011). Household Cookstoves, Environment, Health, and Climate Change: A New Look at an Old Problem. https://openknowledge.worldbank.org/handle/10986/27455

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Department of Civil and Architectural Engineering, College of Engineering, Sultan Qaboos University, P.O. Box 33, Al-Khoudh 123, Muscat, Oman

Indoor air pollution in the Gulf Cooperation Council (GCC) countries poses a significant health risk to residents. Due to the harsh meteorological conditions prevalent in the region, people in GCC countries spend a considerable amount of time indoors. This, combined with various factors contributing to poor indoor air quality, makes it a pressing concern for public health. Common sources of indoor air pollution in the region include air conditioners, cooking activities, burning Arabian incense, and overcrowding during pilgrimage programs. Exposure to indoor air pollutants has been linked to a range of health issues, including cardiorespiratory, pulmonary diseases, and lung cancer.

The unfavorable climatic conditions in the GCC countries, characterized by high temperatures and humidity, force residents to rely heavily on air conditioning systems. While these systems provide relief from the heat, they can also harbor biological contaminants such as mold, bacteria, and allergens if not properly maintained. These pollutants can circulate within the indoor environment, leading to respiratory issues and other health problems for occupants.

Common Indoor air pollution Sources in the GCC

Cooking activities, especially those involving traditional methods or ingredients, can generate particulate matter and release harmful gases such as carbon monoxide, nitrogen dioxide, and volatile organic compounds (VOCs). These pollutants can accumulate in poorly ventilated indoor spaces and contribute to respiratory and cardiovascular diseases.

Another cultural practice that impacts indoor air quality in the GCC countries is the burning of Arabian incense. The use of incense is widespread in homes, mosques, and other public spaces for religious and social purposes. However, burning incense releases particulate matter, VOCs, and toxic compounds like polycyclic aromatic hydrocarbons (PAHs), which can adversely affect human health upon inhalation.

Overcrowding, particularly during religious pilgrimage events such as Hajj and Umrah, further exacerbates indoor air pollution in the region. The increased number of people in confined spaces leads to higher concentrations of pollutants generated from human activities and increases the risk of airborne infections.

The major findings of indoor air pollution studies in different microenvironments in six GCC countries are:

• Particulate matters (PM10 and PM2.5), total volatile organic compounds (TVOCs), carbon dioxide (CO2), sulfur dioxide (SO2), nitrogen dioxide (NO2), and heavy metals were identified as the reported indoor air pollutants.
• Indoor Radon and bioaerosols were studied only in specific GCC countries.
• Future studies should also focus on the investigation of emerging indoor air pollutants, such as ultrafine and nanoparticles and their associated health effects.
• Studies on the mitigation of indoor air pollution through the development of advanced air purification and ventilation systems could improve the indoor air quality (IAQ) in the GCC region.

Indoor air pollution is a serious health problem as it causes about 4.5 million annual deaths globally resulting from pneumonia (12%), stroke (34%), ischemic heart diseases (IHD) (26%), chronic obstructive pulmonary diseases (COPD) (22%), and lung cancer (LC) (6%) (Amoatey et al., 2017; Tageldin et al., 2012; Thurston et al., 2016; WHO, 2018).

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To address the issue of indoor air pollution in the GCC countries, a multipronged approach is required:

1. Public awareness campaigns: Educating residents about the health risks associated with indoor air pollution and promoting best practices for maintaining good indoor air quality can help reduce exposure to harmful pollutants.
2. Improved building regulations: Implementing stricter building codes and guidelines that emphasize proper ventilation, insulation, and maintenance can create healthier indoor environments.
3. Regular maintenance of air conditioning systems: Ensuring that air conditioning systems are properly cleaned and maintained can help prevent the growth and spread of biological contaminants.
4. Promoting alternative cooking methods and materials: Encouraging the use of cleaner cooking fuels, energy-efficient stoves, and well-ventilated kitchens can help minimize indoor air pollution from cooking activities.
5. Regulation of incense burning: Introducing guidelines on the safe use of incense and promoting alternatives such as electric incense burners or essential oils can help mitigate the impact of incense burning on indoor air quality.

In conclusion, indoor air pollution in the GCC countries presents a significant health challenge due to the region’s unique climatic conditions, cultural practices, and overcrowding during pilgrimage events. By acknowledging these factors and implementing targeted interventions, it is possible to improve indoor air quality and protect the health of residents in the GCC countries. Increased awareness, better building regulations, proper maintenance of air conditioning systems, and adoption of cleaner cooking methods and incense alternatives can all contribute to a healthier indoor environment and reduced risk of disease.

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