Anthropogenic contributions to aerosols (primarily sulphate, organic carbon, nitrate and dust) together produce a cooling effect, with a total direct radiative forcing of −0.5 Wm−2 and an indirect cloud albedo forcing of −0.7 Wm−2 [1].
The Homeland Security Department has been experimenting with diluting ammonium nitrate with coal dust.
The presence of sulfate, nitrate, ammonium, soil dust and a number of organic functional groups are all detected in one analysis on filter samples without extraction or other sample preparation.
The ultra-fine pieces, which vary in content from carbon soot and nitrates to road dust, measure under 2.5 microns--a fraction of the diameter of a human hair--and seem to lodge in the lungs and aggravate heart conditions.
In 1955 it was discovered that mixtures of ammonium nitrate and fine coal dust would give very satisfactory blasting results in the large (about 22.5-centimetre, 9-inch) holes used in open-pit coal mines to remove the rock and soil covering the coal.
Other minerals formed from thin air, as nitrogen in the atmosphere reacts with salts and dust, depositing nitrate minerals on the ground over time.
The GEOS-Chem model solves for the temporal and spatial evolution of aerosol (sulfate, nitrate, ammonium, carbonaceous, mineral dust, and sea salt) and gaseous compounds using meteorological data sets, emission inventories, and equations that represent the physics and chemistry of atmospheric constituents.
Experts fear a mine could taint the region's water with increased sediment, coal dust and nitrates from explosives.
Unfortunately charcoal adds more than flavor to your food - charcoal could contain coal dust and sodium nitrate.
The GEOS-Chem model simulates gas-phase chemistry (NOx, HOx, Ox, CO, CH4, and non-methane volatile organic compounds (NMVOCs)) and aerosols (sulfate, nitrate, black (BC) and organic carbon (OC), dust, sea salt), and their interactions46,47.
