1999～2003年，北海道で開発された温泉及び冷鉱泉の化学成分について

概要

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The quality of water samples from 30 hot and mineral springs developed in Hokkaido from April 1999 to March 2003 was studied.The results were summarized as follows:1） By the determination of mineral contents, 30 springs were classified into 11 salt springs （36.7％） containing sodium chloride, 4 simple thermals （13.3％）, 4 alkaline springs （13.3％） with sodium hydrogen carbonate, 3 saline springs （10.0％） with sodium sulfate, 3 sulphur springs （10.0％） with hydrosulphuric ion and others. A radioactive spring was not recognized.2） Hyperthermal springs above 42℃ occupied 73.3％（22 of 30 springs）. Hypotonic mineral water, under 8g/kg in total dissolved matter content, occupied 90.0％. On the other hand, acid springs under 6.0 in pH value was only one spring.3） Humic substances, which are closely related to the color of water, were detected at 5 springs.4） From a hygienic point of view, the drinking amount of spring water was limitted at 12 springs （40.0％） and 1 spring （3.3％） because of high in F, CO２ contents, respectively.
北海道立衛生研究所の論文
2003-10-31