Apr 8, 2019 · Wintertime ammonium nitrate aerosol pollution is a severe air quality issue affecting both developed and rapidly urbanizing regions from Europe to East Asia. In the United States, it is acute in western basins subject to inversions that confine pollutants near the surface.

Jul 8, 2019 · We show that this ammonium nitrate aerosol layer is fed by convection that transports large amounts of ammonia from surface sources into the upper troposphere. Impurities of ammonium sulfate...

Inorganic species such as ammonium sulfate (AS) and ammonium nitrate (AN), which significantly affect air quality, visibility degradation, and climate change, occupy 20–50% among ambient fine aerosol mass.

Jun 10, 2023 · Results show that aerosol liquid water content has a more significant effect on ammonium nitrate formation regardless of the severity of pollution. The dust source is dominant emission source in clean periods; while a combination of coal combustion and vehicle exhaust sources is more important in haze periods.

Ammonium nitrate changes its crystal form every time it passes through a temperature of at least 90 oF (HSDB, 1993). It also absorbs. moisture rapidly from the air when the humidity exceeds about 60 percent. Ammonium nitrate is soluble in water, alcohol, acetone, ammonia, ether, and alkalies (Sax, 1987).

Nov 5, 2024 · Ammonium nitrate and ammonium chloride were popular in aerosols with a strong linear correlation between non-sulfate ammonium (ns-NH 4 +) and nitrate (or nitrate plus chloride). Ammonium equivalent concentration was always less than the sum of sulfate, nitrate and chloride due to ammonium-poor aerosols, whereas the atmosphere was ammonia-rich ...

Oct 30, 2015 · This observation emphasizes the important role of ammonia in the formation of secondary sulfate-nitrate-ammonium aerosols, which should be further explored to solve the current air pollution...

Dec 9, 2024 · The work focuses on better understanding how ammonium nitrate (NH₄NO₃)—a highly dangerous yet essential compound—can form atmospheric aerosols during urban pollution events. In this research, Hassan, Amat, and Topper used TransRot, an open-source software project for predicting and analyzing the structures of nanoparticles using ...

Jul 1, 2013 · About 84% of ammonium nitrate is consumed in fertilizer and about 16% in the production of explosives and blasting agents. It is widely used in disposable cold packs in medical treatment facilities. Miners can be occupationally exposed to airborne ammonium nitrate as a result of its use as a blasting agent in mines.

Mar 1, 2021 · Ammonium nitrate (NH 4 NO 3), although being a stable compound at room temperature, easily decomposes at high temperature (> 210 °C), and produces toxic gasses such as nitrate, nitrite, ammonia (NH 3), nitrogen oxide (NO2) in addition to pure oxygen (O 2) which may ignite an explosion (Han et al., 2015).