大気汚染に関する金属の研究(第1報) : 降下ばいじん中のアルミニウム, 鉄含量の季節および地域による変動について

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Recently, aluminum has been considered one of the biologically significant metals owing to the fact reported by I.H. Tipton that the concentration of aluminum in human lungs has a tendency to increase remarkably together with the advance of age, although in the other tissues, it remains at about the same level for whole age. This paper reports the study of the seasonal and geometrical variation of amounts of aluminum, iron and ash in deposits which were obtained from air at Chiba and Ichihara cities for a year from hygienic standpoint. Aluminum was found directly proportional to ash content, and its content in ash amounted to 6 to 8 per cent by weight. As aluminum in the deposits is major like iron, it is reasonably assumed that the accumulation of aluminum into human lungs depends mainly on the aluminum compounds in air pollution. Therefore, if the relation of aluminum to ash described above is disturbed by any factors, it could be considered to serve as a criterion for air pollution which might be brought by contamination of aluminum or other metals. As for iron, there was observed generally a roughly proportional relationship to ash content, and its amount in ash was in the range of 12 to 14 per cent by weight. However, when air was polluted by iron dusts from a iron works etc., the iron content in ash raised to about 20 per cent.
公益社団法人日本薬学会の論文
1968-04-30