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已知饮水中微量元素与成人疾病的发生有关，本文测定兵库县各市镇单位井水中Ｍｇ２＋、Ｃａ２＋的浓度，研究与胃癌、脑血管疾患死亡率的关系。对象与方法：兵库县内市镇人口移动比较小的１０市８镇，于１９９７年１１月特定日采取井水和地表水各５０ｍｌ。在特定地点每月一次
It is known that trace elements in drinking water are related to the occurrence of adult diseases. In this paper, the concentrations of Mg2 + and Ca2 + in well water of municipalities and towns in Hyogo counties were determined, and the relationship between them and the mortality of gastric cancer and cerebrovascular diseases was also studied. Subjects and Methods: In the eight towns of 10 cities and towns where the population in the inner cities and towns of Hyogo moved relatively small, 50ml of well water and surface water were taken on a specific day in November 1997. Once a month at a specific location