Characteristics of Metal Leaching and Behavior of Ionic Species on the Metal Plate Surfaces Exposed to the Acid Fog, Gas and Aerosol in an Artificial Exposure Chamber

概要

論文の詳細を見る
Characteristics of metal leaching and behavior of ionic species on surface of various metal plates were examined under three exposure conditions combining acid rain (acid fog or pure water fog) and atmosphere (gas and aerosol or gas alone) in an artificial exposure chamber.<BR>The corrosion of Fe ion on a carbon steel plate resulted from aerosol by 80% and from gas by 14%. The Al ion on an aluminum alloy plate resulted from artificial acid fog by 51%, aerosol by 24%, and gas by 25%. The Cu ion on the bronze plate and on the copper plate, and the Pb ion on the bronze plate and on the lead plate were mainly due to artificial acid fog and gas.<BR>Although the metal plates for the exposure of the present examination were about 12 times bigger than our previous examination, the concentration of various ion species in rain after touching to the metal surface did not differ very much except H<SUP>+</SUP> ion decreased. Therefore the chemical reaction and physical adsorption in the corrosion products were not clarified. Many ions showed significant difference in the t-test between the blank water and the rain touched on the metal plate.
日本環境化学会の論文