饮用天然矿泉水富含多种人体必需的宏量元素和微量元素 ,对人体健康有重要的保健作用。饮用天然矿泉水中含有4 0 Ｋ ,从放射卫生考虑 ,需关注4 0 Ｋ的含量。为此作者于 1998～ 1999年对吉林省饮用天然矿泉水中4 0 Ｋ放射性水平进行了监测。1　仪器与方法仪器 :64 0 0型火焰光度 Drinking natural mineral water is rich in a variety of macro elements and trace elements essential to human health, has an important health effect on human health. Drinking natural mineral water contains 40 K, from radiation health considerations, the need to pay attention to 40 K content. To this end, the authors monitored the radioactivity level of 40 K in drinking natural mineral water in Jilin Province from 1998 to 1999. 1 instruments and methods Instrument: 64 0 0 flame luminosity