What Are Diesel Emissions

Total hydrocarbons (THC or simply HC) include all gaseous HC species, while non-methane hydrocarbons (NMHC) exclude methane emissions (due to their lesser smog reactivity). In the case of diesel engines, the difference between THC and HC emissions is typically smallon the order of

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Volatile organic compound - Wikipedia

Volatile organic compounds (VOC) are organic chemicals that have a high vapour pressure at room temperature.High vapor pressure correlates with a low boiling point, which relates to the number of the sample's molecules in the surrounding air, a trait known as volatility.. VOC's are responsible for the odor of scents and perfumes as well as pollutants.

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Oil sands - Wikipedia

Oil sands, tar sands, crude bitumen, or bituminous sands, are a type of unconventional petroleum deposit.Oil sands are either loose sands or partially consolidated sandstone containing a naturally occurring mixture of sand, clay, and water, soaked with bitumen, a dense and extremely viscous form of petroleum.. Significant bitumen deposits are reported in Canada, Kazakhstan, Russia, and Venezuela.

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NIST - SRM Order Request System

Nov 19, 2011 · Non-Methane Hydrocarbon Compounds in Nitrogen 5.0 nmol/mol: SRM 1800b: Eighteen Non-Methane Hydrocarbon Compounds in Nitrogen (Nominal 5 nmol/mol), July 15, 2011: SRM 1804: Eighteen Toxic Volatile Organic Compounds in Nitrogen: SRM 1804c: Toxic Volatile Organic Compounds in Nitrogen, January 29, 2008: SRM 1805: Benzene in Nitrogen: SRM 1806

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UK Environmental Accounts - Office for National Statistics

Total revenue in 2018 (£50.1 billion) was more than double the revenue collected in 1997 (£24.3 billion). This increase was due largely to increases in revenue from hydrocarbon oils, which include taxes on transport fuels. There was a jump in revenue between 1997 and

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Ozone pollution in China: A review of concentrations

Jan 01, 2017 · High concentrations of ozone in urban and industrial regions worldwide have long been a major air quality issue. With the rapid increase in fossil fuel consumption in China over the past three decades, the emission of chemical precursors to ozonenitrogen oxides and volatile organic compoundshas increased sharply, surpassing that of North America and Europe and raising

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Light Duty Vehicle Emissions | Green Vehicle Guide | US EPA

Sep 24, 2019 · Carbon-containing compounds (NMOG [non-methane organic gases], NMHC [non-methane hydrocarbons], or THC [total hydrocarbon content]), that contribute to the formation of ozone and smog; Carbon Monoxide (CO), a colorless, odorless, and poisonous gas; Formaldehyde (HCHO), a lung irritant and carcinogen.

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Natural gas - Wikipedia

Natural gas (also called fossil gas; sometimes just gas) is a naturally occurring hydrocarbon gas mixture consisting primarily of methane, but commonly including varying amounts of other higher alkanes, and sometimes a small percentage of carbon dioxide, nitrogen, hydrogen sulfide, or helium. It is formed when layers of decomposing plant and animal matter are exposed to intense heat and

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Alternative Fuels Used in Transportation

non-methane hydrocarbons than gasoline-powered vehicles. (Reactive hydrocarbon emissions produce ozone, one of the components of smog that causes respiratory problems.) These favorable emission characteristics result because natural gas is 25 percent hydrogen by weight; the only combustion product of hydrogen is water vapor. Natural gas is usually

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Volatile organic compound - Wikipedia

Volatile organic compounds (VOC) are organic chemicals that have a high vapour pressure at room temperature.High vapor pressure correlates with a low boiling point, which relates to the number of the sample's molecules in the surrounding air, a trait known as volatility.. VOC's are responsible for the odor of scents and perfumes as well as pollutants.

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