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Oxygen rain

Atmosphere—Water Interaction. Although water is a very minor component of the atmosphere, less than 10 vol % of the atmosphere consisting of water, many important reactions occur ki the water droplets of cloud, fog, and rain. The atmosphere is an oxic environment ki its water phase, gigantic quantities of reductants, such as organic substances, Fe(II), SO2, CH SCH (dimethyl sulfide), and nitrogen oxides, are oxidized by oxidants such as oxygen, OH radicals, H2O2, and Fe(III). [Pg.212]

Variable results have been reported with this pigment and an examination of its inhibitive action has led to the conclusion that under rural and marine conditions, where the pH of the rain-water is above 5, it behaves as an inert pigment owing to its limited solubility. However, in industrial and urban areas, where the pH of the rain-water may be in the region of 4 or lower, it is converted into the more soluble monohydrogen phosphate. This reacts in the presence of oxygen, with the steel surface to form a mixture of tribasic zinc and ferric phosphates, which being insoluble protects the steel from further attack. [Pg.596]

Rain unaffected by human activity contains mostly weak acids and has a pH of 5.7. The primary acid present is carbonic acid, H2C03, a weak acid that results when atmospheric carbon dioxide dissolves in water. The major pollutants in acid rain are strong acids that arise from human activities. Atmospheric nitrogen and oxygen can react to form NO, but the endothermic reaction is spontaneous only at the high temperatures of automobile internal combustion engines and electrical power stations ... [Pg.550]

Oxidation by molecular oxygen or NO2 converts this weak acid into H2 SO4, a major contributor to acid rain. [Pg.1536]

Water vapor enriched in oxygen-16 is transported by wind in the atmosphere from the sea to land. When the water vapor condenses and precipitates as rain, snow, or hail, the water becomes rich in oxygen-16. Eventually the oxygen-16 rich water is incorporated into rivers, lakes, glaciers, and polar ice, which are, therefore, also rich in oxygen-16. Thus the isotopic composition of groundwater and the water of rivers, lakes, and glaciers is not the same as in seas and oceans. [Pg.240]

The purify of the water changes constantly during the water cycle. As rain falls through the air, for example, the water dissolves some atmospheric gases such as oxygen, carbon dioxide, and in industrial regions also such air pollutants as sulfur dioxide and oxides of nitrogen. Still more carbon dioxide... [Pg.442]

Acid rain is caused primarily by sulfur dioxide emissions from burning fossil fuels such as coal, oil, and natural gas. Sulfur is an impurity in these fuels for example, coal typically contains 2-3% by weight sulfur.1M Other sources of sulfur include the industrial smelting of metal sulfide ores to produce the elemental metal and, in some parts of the world, volcanic eruptions. When fossils fuels are burned, sulfur is oxidized to sulfur dioxide (SO2) and trace amounts of sulfur trioxide (SC>3)J21 The release of sulfur dioxide and sulfur trioxide emissions to the atmosphere is the major source of acid rain. These gases combine with oxygen and water vapor to form a fine mist of sulfuric acid that settles on land, on vegetation, and in the ocean. [Pg.47]

The conclusions of Hurt s study of year-by-year oxygen isotope ratios in 72 years of S. gigantea are thus supportive of the conclusions of the CIAP study [49] that solar variations influence the abundances of many kinds of chemical species in the stratosphere, and therefore influence the.amount of solar energy they absorb and re-radiate to earth, and therefore influence the surface temperature of the earth and especially the surface temperatures of the oceans. It is the surface temperature of the oceans which produces the phenomena we have discussed the isotope ratio variations in rain and hence in tree rings, the isotope ratio variations in the Greenland ice cap, in the organic carbon and uranium concentrations in sea cores, and furthermore variations of the sea surface temperature produces variations in the carbon-14 to carbon-12 ratio fractionation at the sea air interface and hence in the carbon-14 content of atmospheric carbon dioxide and hence in the carbon-14 content of tree rings. [Pg.280]

The linear relationship of the isotope ratios of hydrogen and oxygen with a slope of 8 in rain and snow was discovered by Craig [74] to be... [Pg.292]

Acid rain is one of the worst manifestations of the damage we, as humans, inflict on our planet. Chemicals combine with elemental oxygen during the burning of fossil fuels, trees and rubbish to generate large amounts of acidic oxides such as nitrogen monoxide (NO), carbon dioxide (CO2) and sulphur dioxide (SO2). [Pg.237]

The electrolyte on the surface of the iron comprises water containing dissolved oxygen (e.g. rain water). [Pg.333]

Exposure can be carried out in conditions where UV light and rain are excluded, which is essentially measuring the effects of temperature, oxygen and humidity. This is relevant... [Pg.54]

People who suffer from other pulmonary diseases that interrupt the flow of oxygen are especially sensitive to the irritating effects of SO2 and its particulate derivatives. This gas and several other gaseous air pollutants, to be mentioned in a moment, can cause other, delayed toxic effects in the respiratory system. Note also that these same chemicals are the principal causes of acid rain. [Pg.107]

The pond can be filled with rain or tap water. If using city water, wait at least 48 hours for the chlorine to dissipate before Introducing floating or oxygenating plants. Wildlife will move in rapidly of Its own accord, and within a year your pond should have a full complement of creatures. It Is not uncommon for new ponds to suddenly turn a vivid green. Do not be alarmed this algal bloom will clear by Itself, although you can help It to disperse (seep.l23). [Pg.119]

When the combustion cycle takes place, the components, hydrogen and oxygen, recombine to once again form water molecules. Thus only water and extra air exit the exhaust pipe. Next, being that this water is in a highly excited state, very hot steam, it exits as something similar to very moist air. Ever driven your car in the rain Doesn t kill or rust it does it And there you have a car that runs on water. Just needs the right modifications performed. [Pg.7]


See other pages where Oxygen rain is mentioned: [Pg.326]    [Pg.326]    [Pg.273]    [Pg.2209]    [Pg.9]    [Pg.111]    [Pg.129]    [Pg.140]    [Pg.274]    [Pg.89]    [Pg.65]    [Pg.81]    [Pg.4]    [Pg.122]    [Pg.119]    [Pg.119]    [Pg.125]    [Pg.822]    [Pg.236]    [Pg.243]    [Pg.6]    [Pg.54]    [Pg.320]    [Pg.363]    [Pg.256]    [Pg.259]    [Pg.366]    [Pg.273]    [Pg.289]    [Pg.2]    [Pg.217]    [Pg.79]    [Pg.152]    [Pg.164]    [Pg.433]    [Pg.273]   
See also in sourсe #XX -- [ Pg.412 , Pg.413 ]




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