立山における大気中ガス状水銀の長距離輸送の観測

抄録

Globally, 2/3 of the anthropogenic emission of gaseous mercury to the atmosphere is estimated to be from Asia, especially from China. Japan is located in the eastern side of the China continent, and long-range transportation of air pollutants is one of the environmental concerns. The concentrations of the atmospheric gaseous mercury, SO₂, O₃, and SO₄^2- at the altitude 2450m and 977m on Mt.Tateyama, faces the Japan Sea, were measured simultaneously to detect long-range transportation of the pollutants. Gaseous mercury could be transported from China simultaneously with O₃ and SO₄^2-, however, the increase in the concentration of mercury was smaller than other components.