acid rain occurs when released into the atmosphere by sulfur dioxide (so2) and nitrogen oxides (nox) and carried by wind and air currents. the so2 and nox react to form sulfuric and nitric acids with water, oxygen, and other chemicals. they then combine before dropping to the table, with...
(per 500 ml: 69.45 g ammonium fluoride and 36.75 g EDTA was mixed at 50 °C), 11.5 ml nitric acid and 11.5 ml acetic acid. Briefly, soil (10 g, fine-grained sol) was extracted with 100 ml of the extraction solution under shaking for 10 min. The suspension obtained was filtered ...