Abstract
Behavior of corrosion by atmospheric environmental using metal test pieces such as carbon steel, copper and silver was measured and examined in Toyama prefecture from 1988 to 1997 for the purpose of determining the relationship between the corrosion characteristics of various metals and the environmental factors.
The relationship between the corrosion and the environmental factors was estimated by using multiple regression analysis. The analytical results show that the corrosion of each metals is greatly affected by environmental factors such as SPM(suspending particle materials), wind velocity and SO2. leaching tests for metal pieces were conducted by exposing them to wet deposition to evaluate the effects of the environmental factors on the leaching. The results show that the leaching of Fe3+ and Cu2+ is greatly affected by the environmental factors such as SPM, SO42-(wet deposition),H+(wet deposition) and Ca2+(filtrate dross of wet deposition).
