<報文>東京都水系の有機ハロゲン化合物の汚染形態

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In order to confirm the source of pollution, the typical halocarbons in city water, underground water, rivers and ponds were analyzed. Especially, up to date the data about underground water were not enough to carry out the argument on their environmental movement. In the present paper, the authors tried to compare the above 4 samples about the amounts and the ratios of 7 components of halocarbon, and consequently some noteworthy results were obtained. The concentration values of solvents in the underground water were measured in the range of 100 to 0.01 ppb order. High and low polluted points were distributed in all over the city, following to a normal logarithmic distribution curve. It was observed that solvents were exhausted directly to the underground water and from them diffused to the other environments, whereas all of trihalomethanes were generated from the city water. In the river water and the pond water, very low concentrations of halocarbons were detected. The solvents and the trihalomethans evaporated from the surface of hydrosphere were considered to attain to a certain equilibrium between water and atmosphere.
横浜国立大学の論文