鉱山地域周辺に於る各種金属の生体に与える影響-1-河川水および飲料水中各種金属の地域変動

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Sixty six stream water samples and 198 drinking water samples from five districts in Tohoku Province were collected to examine the effects of pollution by waste water and smoke from metal mines and smelters. All samples were analyzed for heavy metals (Cd, Zn, Cu, Mn, Fe, Al) and non heavy metals (Na, K, Mg, Ca, Sr, P) using an inductively coupled plasma spectroscopy (ICP) and an atomic absorption spectrometry. Reservoir water in sedimentation basins was a major cause for river contamination of metals and in present survey, the water from the two sedimentation basins flowed into and polluted each tributary stream, but had not effects upon these main streams. The important water contaminants of metal in mine areas were Cd and Zn in heavy metals, K, Mg and P in non heavy metals. On the other hand, the concentrations of Na and Ca were higher in control area. In present study, many drinking water were spring water in mountains and therefore these metal concentrations were very low. But the heavy metal concentrations in drinking water in mine areas using the large in scale smelters like Osarizawa and Kosaka were higher.
日本民族衛生学会の論文