Hazards of Volcanic Gases
نویسندگان
چکیده
aerosol A colloidal dispersion of liquid particles in a gas, e.g., SO2, which will react with the OH radical in the atmosphere to form tiny droplets of sulfuric acid (H2SO4). hazard In a volcanic context, hazard refers to the phenomena produced by a volcanic event and is directly related to Risk, where Risk1⁄4Hazard Vulnerability, with vulnerability referring to the consequences for population and infrastructure. PEL The recommended permissible exposure limit to a given chemical compound above which health risks may occur. The exposure limit is generally averaged over an 8-h day, 40-h week. It is measured in parts of compound (e.g., CO2) per million parts of air (ppm). Gas solubility The maximum amount of a gas that can be dissolved in a given amount of water at 20 C; measured in g/L. dgas The vapor density of a gas relative to air (density1⁄4 1); measured in g/L.
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