How to Prevent Exhaust Gas Contamination

There are several kinds of pollutants found in exhaust gas. This article discusses some of them, such as benzene, arsenic, formaldehyde, and tetraethyl lead. These pollutants can be harmful to human health and can cause a variety of other problems. For more information on the sources of these pollutants, read on. We also discuss the ways to reduce their harmful effects. Listed below are a few of the most common contaminants and how to prevent them.


The level of benzene in your exhaust gas can vary from location to location. Benzene is a colorless liquid with a sweet odor. It is formed naturally and is among the 20 most common chemicals in the United States. Benzene is also a precursor to other chemicals, and was once a common ingredient in gasoline and industrial solvents. Exposure to benzene in your exhaust gas can cause cancer.

Exposure to benzene has been linked to several types of cancer, including childhood leukemia and chronic lymphocytic leukemia. Benzene has also been linked to bone marrow damage in lab animals. In humans, exposure to benzene in high levels of exhaust gas can cause leukemia. Although the effects of benzene on humans are unclear, some studies have suggested that it can cause cancer and damage to the liver and brain.


There are many different kinds of arsenic in the environment, from natural elements found in soil to synthetic compounds used in manufacturing. Inorganic arsenic is a common contaminant in the environment and has been linked to cancer. Organic arsenic is also found in certain foods and can be toxic to the body. In the workplace, arsenic exposure can be dangerous and requires personal protective equipment.

To determine the concentration of arsenic in the exhaust gas, various studies were conducted. In the low-income rural regions of China, large amounts of contaminated biomass were routinely disposed through combustion. This process reduces the volume and cost of waste disposal. The process was used in pilot-scale combustion trials at phytoremediation sites. To control arsenic emissions in flue gas, the reaction mechanism capturing arsenic should be investigated. A study of the different levels of arsenic in biomass and flue gas showed that the concentration was more than twice the national standard.


While formaldehyde levels in exhaust gas are well below hazardous air pollution standards, they are still present in significant amounts. Colorado State University conducted a literature review to evaluate the mechanisms by which formaldehyde forms and their applicability to gas engines. The literature review focused on several aspects of formaldehyde formation, including post combustion equilibrium concentrations, flame propagation and structure, and potential paths of engine out formaldehyde.

There is a growing concern about the effects of formaldehyde on human health. In oil and gas areas, it is particularly problematic due to its associations with respiratory illnesses and lung damage. The EPA has issued a guide to the health effects of formaldehyde from a number of different sources. The EPA also aims to help citizens learn about formaldehyde exposure. Further information is available from the U.S. Environmental Protection Agency and the Consumer Product Safety Commission. Environmental consulting firms can help determine whether or not your vehicle is contaminated with formaldehyde.

Tetraethyl lead

When you think about the environmental impact of lead, tetraethyl lead comes to mind. This organometallic compound has the formula (CH3CH2)4Pb and was used extensively in gasoline. This substance prevents fuel from detonating during the compression stroke. Its anti-knock properties enable engine builders to achieve higher compression ratios for greater peak power and efficiency. Although lead toxicity was the main reason for the ban on tetraethyl lead, it’s still used in gasoline and as a chemical additive for piston-engined aircraft.

Tetraethyl lead was first introduced into gasoline in the 1920s by General Motors as an anti-knock agent. The manufacturers claimed that this additive was safe, but researchers soon realized that it was polluting the environment and putting public health at risk. The United Nations Environment Programme (UNEP), nongovernmental organizations, vehicle and fuel companies, and governments all worked together to ban tetraethyl lead from gasoline.


The EPA recently released a draft report on tetrahydrofuran’s toxicological review for use in EPA programs and regional offices to guide decisions on human health risks. The report includes Agency scientific positions on potential adverse health effects of chronic exposure and chemical-specific summaries of qualitative and quantitative health information. The draft report supports the two-step risk assessment paradigm. It is recommended that tetrahydrofuran be handled with impervious boots, rubber gloves, and full face shield. In addition, quick-drill facilities must be provided. As a chemical that is unstable in oxygen, tetrahydrofuran must be handled with extreme care. This chemical can also react violently with air, metals, and potassium hydroxide.

The utility model has several purposes. It aims to eliminate tetrahydrofuran (THF) emissions while automatically detecting superoxide. It also enables a secure tetrahydrofuran retrieval arrangement and high safety coefficient. This model is a useful tool for preventing tetrahydrofuran-related emissions from industrial facilities. The utility model was developed as part of a larger project to address the problem of tetrahydrofuran-related pollution.

Tetraethyl nitrate

Since its discovery in 1853, tetraethyl nitrate (TEN) has been a popular industrial byproduct. It undergoes thermal decomposition in automobile engines and emits lead atoms and ethyl radicals. These atoms undergo oxidation to form lead monoxide, which inhibits chain-branching reactions and inactivates intermediates in hydrocarbon oxidation.

Although the effects of tetraethyl nitrate on exhaust gas emissions were not clear, there were a few concerns. For starters, lead oxide deposits from this substance can adversely affect the combustion chamber, spark plugs, and engine performance. As a result, tetraethyl nitrate in exhaust gas contamination caused the suspension of leaded gasoline in New York City, Philadelphia, and New Jersey.