摘要
采用EDTA滴定法测定水样中的总硬度、钙硬度、镁硬度、永久硬度和暂时硬度．检测了肇庆市部分水样的硬度，并将之与世界卫生组织对于水硬度的规定与标准进行比较，结果发现自来水、西江水和北岭山泉水属于中等硬度水，总硬度在60-120mg／L之间，符合健康饮用水标准；星湖水和直饮水属于软水，总硬度在0-60mg／L之间．
By using EDTA titration of calcium and magnesium, the experiments measured the hardness of water samples in Zhaoqing city and compared it with the provisions of the World Health Organization for water hardness. The data show that the water samples from running water. West River and North Ridge are of medium hardness, the total hardness is between 60~120 mg/L, meeting the health standards for drinking water; water samples from the Star Lake and the direct drinking water are soft water, with total hardness between 0-4i0 mg/L.
出处
《肇庆学院学报》
2012年第2期42-45,共4页
Journal of Zhaoqing University
基金
肇庆学院科学研究基金资助项目(2005024)
关键词
水硬度
饮用水水质准则
钙硬度
镁硬度
water hardness
guidelines for drinking water quality
calcium hardness
magnesium hardness
