Investigation of SOx Pollution in Yukuhashi City
1993 Volume 28 Issue 2 Pages 114-123
Details
1993 Volume 28 Issue 2 Pages 114-123
The amounts of sulfur oxides absorbed on PbO2-cylinder were measured from April 1974 through March 1990 at 8 locations in Yukuhashi City. The results showed that the amounts of sulfur oxides were decreased steadily at all locations year by year, except 1979 (the 2nd oil crisis), 1984 and 1985.
From the relationship between the amounts of sulfur oxides and the frequency of wind direction, it was found that the amounts of sulfur oxides in Yukuhashi City were increased by the wind from 3 directions, namely NE (Ube, Onoda), NW (Kitakyushu) and SE (Buzen, Nakatsu), in spring, summer and autumn.
In winter, the amounts of sulfur oxides in Yukuhashi City were increased by the wind from W-N-E.
Correlation coefficients between the data with the PbO2 method at the location No.4 and those with SO2 auto analyzer at the location No.9, were γ= 0.76 (n= 47) in winter, γ=0.64 (n= 44) in autumn, γ= 0.52 (n= 46) in spring and γ=0.28 (n=44) in summer.
