Due to its relative high sensitivity to precipitationacidity and environmental humidity, the corrosion rate of zinc at TSP was a little higher than that at GYQ.
The trend of the wet deposition between 1987 and 2004 in Beijing city was analyzed by using two parameters, e. g. precipitationacidity and wet deposition fluxes.
Ion balance study showed that the precipitationacidity was not decided on acid ion concentrations only, but manly decided on basic ion concentrations which neutralized acid ion in Wuhan city proper.