Meghan Hodges
Oil smoke is a form of air pollution that is detrimental to human health and the environment. It is caused by the combustion of oil, which releases harmful gases and particulate matter into the atmosphere. Oil smoke contains toxic substances such as nitrogen oxide, fine particulate matter (PM2.5), ozone, and volatile organic compounds. Exposure to oil smoke has been linked to various health issues, including respiratory and cardiovascular problems, childhood asthma, and an increased risk of cancer. Oil smoke is particularly prevalent in areas with significant oil and gas production, but its impact can also be felt in distant cities with no oil or gas activity. Understanding and mitigating the health and environmental effects of oil smoke pollution is crucial to protect human well-being and ensure sustainable practices in the oil and gas industry.
| Characteristics | Values |
|---|---|
| Oil smoke point | The temperature at which an oil begins to smoke and oxidize (break down into free fatty acids) |
| Smoke point range | Avocado oil – 520˚F, Refined Vegetable Oil – 468˚F, Safflower Oil – 450˚F, Sunflower Oil – 450˚F, Peanut Oil – 450˚F, Corn Oil – 440˚F, Canola Oil – 400˚F, Grapeseed – 400˚F, Virgin Olive Oil – 280-400˚F |
| Harmful compounds | Polar compounds, which have been linked to cellular damage and health issues like Alzheimer's and Parkinson's disease |
| Health impacts | 7,500 excess deaths, 410,000 asthma attacks, 2,200 new cases of childhood asthma, respiratory and cardiovascular-related hospitalizations, adverse pregnancy outcomes, and other health challenges |
| Pollutants | Nitrogen oxide, fine particulate matter (PM2.5), ozone (O3), benzene, formaldehyde, and methane |
| Health costs | $77 billion annually in the US |
| Impacted regions | Southwest Pennsylvania, Texas, Eastern Colorado, Chicago, New York City, Baltimore, Washington DC, Orlando, Ohio, Oklahoma, Louisiana, Illinois |
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What You'll Learn
Oil and gas production: a major cause of air pollution
Oil and gas production is a major cause of air pollution, with significant impacts on air quality, human health, and health costs. Despite global efforts to transition from fossil fuels to clean energy, oil and gas production levels are increasing in the United States, causing concern among health experts about the potential consequences for air quality and human health.
Oil and gas production emits several pollutants, including nitrogen oxide, fine particulate matter (PM2.5), ozone (O3), methane, benzene, and formaldehyde. These pollutants have severe environmental and health impacts. A study by the University of North Carolina Institute for the Environment (UNC-IE) and other organizations found that in 2016, U.S. oil and gas production contributed to 7,500 premature deaths, 410,000 asthma attacks, and 2,200 new cases of childhood asthma. The health effects extended beyond areas with significant oil and gas activity, affecting cities with little to no gas activity, such as Chicago, New York City, and Baltimore.
Nitrogen oxide, a common pollutant associated with burning natural gas, was the largest contributor to mortality and over 80% of asthma attacks. Additionally, the production, processing, and use of oil and gas emit substantial greenhouse gases, primarily methane. Methane is a key contributor to air pollution and climate change, and its impact on climate change costs is estimated to be three times higher than the health costs of methane emissions.
To address these issues, oil and natural gas companies should focus on increasing emission control in production areas. Strategies to reduce NO2 emissions from the oil and gas sector could help mitigate asthma cases and provide secondary health benefits in downwind areas. Additionally, the benefits of reducing emissions extend beyond oil and gas-producing regions, improving air quality and public health in distant populations.
Overall, oil and gas production is a significant contributor to air pollution, with far-reaching consequences for human health and the environment. Addressing these emissions and improving air quality is crucial to mitigate the adverse impacts on public health and the climate.
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Health impacts: respiratory issues, asthma, and adverse pregnancy outcomes
Air pollution is the contamination of the air with substances that harm human health or the environment. These pollutants may be gases, chemicals, or small particles in the air. Oil smoke is a contributor to air pollution and has been linked to respiratory issues, asthma, and adverse pregnancy outcomes.
Respiratory Issues
Respiratory issues are a significant concern when it comes to oil smoke pollution. Small airborne particles, found in smoke, soot, and dust, can lead to serious air quality problems. These small particles, known as particulate matter or PM, can infiltrate the lungs and even enter the bloodstream. The smallest particles, PM2.5, are the most dangerous and can irritate the airways. Ultrafine particles can also carry toxic chemicals linked to cancer.
Breathing in nitrogen dioxide (NO2) can worsen lung disease, especially asthma. Sulphur dioxide (SO2), produced by burning fuels like coal and oil, can cause coughing, tightness in the chest, and difficulty breathing. It can also lead to increased hospital admissions for people with asthma. Wildfire smoke, which includes gaseous pollutants, hazardous air pollutants, water vapour, and particle pollution, has been linked to an increased risk of cardiovascular and respiratory issues.
Asthma
Air pollution is associated with an increased risk of developing asthma and the worsening of asthma symptoms. Ozone, a common air pollutant, is particularly irritating to the lungs and airways, triggering asthma attacks. Nitrogen dioxide, sulphur dioxide, and particulate matter are also known to aggravate asthma. People living near sources of pollution, such as busy roadways, power plants, and industrial facilities, are at a higher risk of experiencing asthma symptoms due to increased exposure to air pollutants.
Adverse Pregnancy Outcomes
Pregnant individuals are especially vulnerable to the adverse effects of air pollutant exposure due to increased respiration and cardiovascular output during pregnancy. While the effects of wildfire smoke (WS) on pregnancy are not yet fully understood, studies on air pollution and other combustion sources suggest links to inflammation, oxidative stress, endocrine disruption, DNA damage, and metabolic and vascular dysregulation in the maternal-fetal unit. These alterations in placental biology contribute to adverse obstetric outcomes.
Additionally, air pollution exposure during pregnancy has been associated with adverse birth outcomes, including preterm birth, low birth weight, and small gestational age. Maternal smoking, combined with exposure to air pollution, further increases the risk of preterm birth. Socio-demographic factors, behavioural factors, physical activity, and clinical factors also influence adverse birth outcomes.
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Cooking oils: smoke points and health considerations
Cooking oils are an essential ingredient in any kitchen, but with so many options available, it can be challenging to choose the right one for your needs. Understanding the smoke points and health considerations of various cooking oils can help you make informed decisions and elevate your culinary creations.
When cooking oils are heated, they eventually reach a temperature at which they start to produce smoke. This temperature is known as the smoke point, and it varies depending on the type of oil. Oils with higher smoke points can be used at higher temperatures without burning, making them ideal for cooking methods like stir-frying or deep-frying. Conversely, oils with lower smoke points are better suited for low to medium-heat cooking methods such as sautéing or dressing salads.
Factors Affecting Smoke Point:
The smoke point of an oil is influenced by its chemical composition, particularly its free fatty acid content. Oils with lower free fatty acid content tend to have higher smoke points and are more stable. Additionally, the age of the oil and its exposure to light, heat, and oxygen during storage can impact its smoke point, with older oils having lower smoke points.
Examples of Cooking Oils and Their Smoke Points:
- Extra virgin olive oil, a popular choice for its flavour and health benefits, is considered a medium smoke point oil, suitable for most cooking methods up to around 375°F (190°C).
- Naturally refined oils like coconut, grapeseed, and sunflower oils have much higher smoke points, typically ranging between 400-500°F (204-260°C).
- Corn oil and peanut oil are often recommended for deep frying and sautéing due to their neutral flavour and high smoke points.
Health Considerations:
When choosing a cooking oil, it's important to consider not only the smoke point but also the health implications. Oils high in saturated fats, such as coconut oil, were once believed to be less healthy. However, recent studies suggest that replacing some saturated fats with polyunsaturated fats or carbohydrates from whole grains can benefit heart health. Additionally, unrefined oils like extra virgin olive oil offer unique flavours and potential health benefits, but they have shorter shelf lives and require careful storage.
In conclusion, selecting the right cooking oil involves balancing flavour preferences, smoke points, and health considerations. By understanding the unique characteristics of different oils, you can make informed choices to enhance your culinary creations while also supporting your health and well-being.
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Wildfire smoke: particle pollution and health risks
Oil and gas production is a major concern for air quality and human health, with pollutants such as nitrogen oxide, fine particulate matter (PM2.5), ozone, benzene, and formaldehyde causing thousands of early deaths, asthma attacks, and childhood asthma cases.
Wildfire smoke is a complex mixture of particle pollution and other pollutants, which can have a range of health effects. The main pollutant emitted from wildfire smoke is fine particulate matter (PM2.5), which can make up around 90% of the total particle mass. These fine particles are generally 2.5 micrometres in diameter or smaller and can be inhaled deep into the lungs, potentially entering the bloodstream. Ultrafine particles, with diameters of less than 0.1 micrometres, are also present in wildfire smoke.
The health effects of exposure to wildfire smoke include eye and respiratory tract irritation, exacerbation of asthma, heart failure, and premature death. Even short-term exposure can lead to persistent coughing, phlegm, wheezing, and difficulty breathing. Exposures to fine particles can potentially lead to transient reductions in lung function, and pulmonary inflammation, even in healthy individuals. Particle pollution may also affect the body's ability to remove inhaled foreign materials, such as viruses and bacteria, from the lungs.
Individuals at greater risk of health effects from wildfire smoke include those with cardiovascular or respiratory disease, older adults, children under 18, pregnant women, outdoor workers, and those of lower socioeconomic status. Wildfire smoke has been linked to an increase in respiratory hospitalizations, particularly in areas with frequent wildfires, such as Southern California.
While most research on particle pollution has been conducted in urban settings, the health effects of wildfire smoke exposure are similar to those observed from fine particles generated in non-wildfire settings. Wildfire smoke exposure has been linked to various health risks, with evidence of increased risk of both cardiovascular and respiratory issues.
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Air pollutants: nitrogen oxide, ozone, and particulate matter
Oil and gas production is a major contributor to air pollution, which has severe consequences for human health and air quality. A recent study found that air pollution from the oil and gas sector caused approximately 7,500 premature deaths, 410,000 asthma attacks, and 2,200 new cases of childhood asthma in the United States in 2016. The pollutants of concern include nitrogen oxide, fine particulate matter (PM2.5), and ozone (O3).
Nitrogen oxides (NOx) are a family of highly reactive gases, including nitrogen dioxide (NO2), nitrous acid, and nitric acid. Nitrogen dioxide is a common pollutant produced by fuel combustion in vehicles, power plants, and off-road equipment. It is an "indicator pollutant," meaning that if nitrogen dioxide is present in the air, other nitrogen oxides are also likely to be present. Nitrogen dioxide and nitrogen oxides can react with other chemicals in the atmosphere, such as volatile organic compounds (VOCs), to form secondary pollutants like ozone and particulate matter.
Ozone (O3) is a major component of smog and is formed from photochemical reactions involving nitrogen oxides and VOCs emitted from vehicles, industry, and household equipment. Ground-level ozone, often referred to as the "bad" ozone, is of particular concern as it forms closer to the Earth's surface and can cause respiratory issues, trigger asthma, reduce lung function, and lead to lung disease. The highest levels of ground-level ozone are typically found in urban areas and during periods of sunny weather.
Particulate matter (PM) refers to inhalable particles composed of various substances such as sulphate, nitrates, ammonia, sodium chloride, black carbon, mineral dust, or water. The size of particulate matter is generally categorized as PM2.5 and PM10, with PM2.5 being the finer particles that can penetrate deeper into the lungs and even enter the bloodstream. These fine particles pose significant health risks and can be formed from the reaction of nitrogen oxides with VOCs, sulfur oxides, ammonia, and other particulates.
The health impacts of exposure to these pollutants are widespread and vary in severity. Short- and long-term exposure to nitrogen oxide, ozone, and particulate matter can lead to lung irritation, respiratory infections, cardiovascular issues, and adverse pregnancy outcomes. Additionally, the presence of these pollutants can have psychosocial impacts, including an increased risk of developmental disorders, neurodegenerative disorders, mental disorders, and suicidal behavior.
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Frequently asked questions
Oil smoke is the smoke emitted from the burning of oil. It can be released during cooking, when an oil reaches its smoke point, or from the burning of fossil fuels.
Yes, oil smoke is a form of air pollution. The burning of oil releases harmful compounds, such as polar compounds, which have been linked to adverse health effects, including cellular damage, asthma, and even cancer.
Oil smoke pollution has been linked to a range of health issues, including asthma, respiratory and cardiovascular issues, adverse pregnancy outcomes, and an increased risk of certain cancers. It is also a contributor to poor air quality, which can have widespread impacts on public health.
To mitigate the negative effects of oil smoke, it is important to choose the right oil for the specific cooking method. Oils with a high smoke point, such as avocado oil, are better suited for high-heat cooking methods like searing or deep-frying. Additionally, reducing the combustion of fossil fuels, such as oil and gas, can help improve air quality and reduce the health risks associated with oil smoke pollution.
