论文部分内容阅读
氟是构成机体的一种必需的微量元素,正常人体各组织中都含有氟。但是人体中氟的含量是有一定的范围的,超过或达不到这个范围都会引起疾病。长期饮用高氟水会产生斑齿症,饮用氟含量过低的水则又会引起龋齿病。人体每日需氟量约1.0～1.5毫克,我国饮水含氟量的卫生标准为0.5～1.0ppm。饮水中氟含量的分析是环境保护和卫生防疫部门必须做的例行工作。延安地区对饮水中氟含量的分析普遍采用比色法测定。我们用氟离子选择性电极测定延安市三条河水的氟,根据延河水成份,进行了离子强度调节缓冲液的选择。该法灵敏度高,大部分
Fluorine is an essential trace element constituting the body, the body contains fluoride in normal tissues. However, the body’s fluoride content is a certain range, more than or less than this range will cause disease. Long-term drinking high-fluoride water will produce spotted disease, drinking water with too low fluorine content will cause dental caries again. The human body needs about 1.0 to 1.5 mg of fluorine daily, and the health standard of fluorine content in drinking water in our country is 0.5 to 1.0 ppm. The analysis of fluorine content in drinking water is a routine work that environmental protection and epidemic prevention departments must do. Yanan area of drinking water in the fluorine content of the commonly used colorimetric assay. We use fluorine ion selective electrode Yan’an City, three rivers of fluorine, according to Yan River water components, ionic strength adjustment buffer was selected. The method of high sensitivity, most