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Assessment report on nitrogen dioxide for developing ambient air quality objectives

Description

Ambient air quality objectives are established as part of the Alberta air quality management system. The purpose of this assessment report was to provide a review of scientific and technical... More ≫

Description

Ambient air quality objectives are established as part of the Alberta air quality management system. The purpose of this assessment report was to provide a review of scientific and technical information to assist in evaluating the basis and background for an ambient air quality objective for nitrogen dioxide. Nitrogen dioxide is an irritating gas with an acrid, pungent odour. It is corrosive, highly oxidizing and non-combustible. It can be released directly to the atmosphere but is often produced by the conversion of nitric oxide released from combustion processes. In the presence of sunlight, nitrogen dioxide can lead to the formation of ozone, nitric acid and nitrate-containing respirable particles.

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Assessment report on benzene for developing ambient air quality objectives

Description

Ambient air quality objectives are established as part of the Alberta air quality management system. The purpose of this assessment report was to provide a review of scientific and technical... More ≫

Description

Ambient air quality objectives are established as part of the Alberta air quality management system. The purpose of this assessment report was to provide a review of scientific and technical information to assist in evaluating the basis and background for an ambient air quality objective for benzene. Benzene is a clear, colourless, volatile, highly flammable liquid with a sweet aromatic odour. It is primarily derived from petroleum and used in the manufacturing of chemical intermediates and as an additive in gasoline.

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Assessment report on hydrogen fluoride for developing ambient air quality objectives

Description

Ambient air quality objectives are established as part of the Alberta air quality management system. The purpose of this assessment report was to provide a review of scientific and technical... More ≫

Description

Ambient air quality objectives are established as part of the Alberta air quality management system. The purpose of this assessment report was to provide a review of scientific and technical information to assist in evaluating the basis and background for an ambient air quality objective for hydrogen fluoride. Hydrogen fluoride is a highly water soluble gas with a strong, irritating odour. It is used in many industrial processes, including the manufacture of fluorocarbons and the production of aluminum fluorides and synthetic cryolite (aluminum industry). Hydrogen fluoride is also used in the fluoridation of drinking water.

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Assessment report on formaldehyde for developing ambient air quality objectives

Description

Ambient air quality objectives are established as part of the Alberta air quality management system. The purpose of this assessment report was to provide a review of scientific and technical... More ≫

Description

Ambient air quality objectives are established as part of the Alberta air quality management system. The purpose of this assessment report was to provide a review of scientific and technical information to assist in evaluating the basis and background for an ambient air quality objective for formaldehyde. Formaldehyde is a colorless, flammable gas with a pungent, suffocating odour. It is considered one of the most widely used industrial and research chemicals, used primarily in the manufacturing of resins, fertilizers and other compounds.

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Assessment report on nickel for developing ambient air quality objectives

Description

Ambient air quality objectives are established as part of the Alberta air quality management system. The purpose of this assessment report was to provide a review of scientific and technical... More ≫

Description

Ambient air quality objectives are established as part of the Alberta air quality management system. The purpose of this assessment report was to provide a review of scientific and technical information to assist in evaluating the basis and background for an ambient air quality objective for nickel. Metallic nickel is not commonly found in nature but nickel is found in many minerals. Nickel is used primarily in the manufacturing of stainless steel and other alloys due to its favourable properties of hardness, corrosion-resistance, heat-resistance and strength.

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Assessment report on 2-ethylhexanol for developing ambient air quality objectives

Description

Ambient air quality objectives are established as part of the Alberta air quality management system. The purpose of this assessment report was to provide a review of scientific and technical... More ≫

Description

Ambient air quality objectives are established as part of the Alberta air quality management system. The purpose of this assessment report was to provide a review of scientific and technical information to assist in evaluating the basis and background for an ambient air quality objective for 2-Ethylhexanol . 2-Ethylhexanol is a clear, colourless liquid with an odour described as sweet, floral, intense, and unpleasant. It occurs naturally in food and is also added as flavouring to foods. This compound is used predominately in the production of plasticizers for PVC resins, hexyl esters, and arylates. It is also used in textiles and as a solvent and wetting agent.

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Assessment report on manganese for developing an ambient air quality objectives

Description

Ambient air quality objectives are established as part of the Alberta air quality management system. The purpose of this assessment report was to provide a review of scientific and technical... More ≫

Description

Ambient air quality objectives are established as part of the Alberta air quality management system. The purpose of this assessment report was to provide a review of scientific and technical information to assist in evaluating the basis and background for an ambient air quality objective for manganese. Manganese may be found in over 100 minerals, primarily in the form of oxides, silicates and carbonates. It is also found in coal and crude oil. Manganese is used primarily in making steels and nonferrous alloys. Other uses for manganese and manganese compounds include in the manufacturing of batteries, fertilizers, pesticides and ceramics, as a gasoline additive and as a dietary supplement. Manganese compounds are also used in animal feeds, pharmaceutical products, and wood preservatives and as catalysts.

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Assessment report on acetone for developing ambient air quality objectives

Description

Ambient air quality objectives are established as part of the Alberta air quality management system. The purpose of this assessment report was to provide a review of scientific and technical... More ≫

Description

Ambient air quality objectives are established as part of the Alberta air quality management system. The purpose of this assessment report was to provide a review of scientific and technical information to assist in evaluating the basis and background for an ambient air quality objective for acetone. Acetone is a clear, colourless liquid, which readily evaporates at ambient temperatures.

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Assessment report on arsenic for developing an ambient air quality objectives [2004]

Description

Ambient air quality objectives are established as part of the Alberta air quality management system. The purpose of this assessment report was to provide a review of scientific and technical... More ≫

Description

Ambient air quality objectives are established as part of the Alberta air quality management system. The purpose of this assessment report was to provide a review of scientific and technical information to assist in evaluating the basis and background for an ambient air quality objective for arsenic. Arsenic and its compounds are used in a number of applications and industrial processes. Chrome copper arsenate is used as a wood preservative. Other uses of arsenic and its compounds include the manufacturing of glass, metallurgy, the manufacturing of gallium arsenide for the electronics industry and some medical applications. In Alberta, the power and electrical utilities sector as well as the wood industry (wood preserving) contribute to arsenic emissions.

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Review of approaches for setting an objective for mixtures in ambient air using polycyclic aromatic hydrocarbons (PAHs) as an example : benzo[a]pyrene

Description

Benzo[a]pyrene is the most well known polycyclic aromatic hydrocarbon (PAH) in a large group of organic compounds with two or more fused aromatic rings. PAHs are formed mainly as a result of... More ≫

Description

Benzo[a]pyrene is the most well known polycyclic aromatic hydrocarbon (PAH) in a large group of organic compounds with two or more fused aromatic rings. PAHs are formed mainly as a result of incomplete combustion of organic materials during industrial and other human activities. These activities include processing of coal and crude oil, combustion of natural gas, combustion of refuse, vehicle traffic, cooking and tobacco smoking, as well as natural processes such as forest fires. Motor vehicle exhaust and re-suspension are major contributors of PAHs, including benzo[a]pyrene, to urban air. PAHs in urban air have also been associated with residential wood burning emissions.

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