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我国地方性氟中毒病区波及二十余个省(市)自治区,危害人口达一亿以上。我省病区涉及104个县、市,病员380余万,病区人口1700余万。其发病原因,百分之九十以上系由于饮水内含氟量过高所引起,因此,采用改良饮水是个行之有效的防治措施,不少省采用打新井,寻找地下低氟水层,或用理化方法除氟等,此类方法虽可达到除氟目的,但由于地质水文条件复杂,所以往往成井率不高,且水层变化规律不易掌握,有些水源开始供水时符合国家饮用标准,但饮用不久即出现了水氟回升现象。吉林省的调查材料:74眼井的监测结果,水氟回升者达
China’s endemic fluorosis area has affected more than 20 provinces (municipalities) and autonomous regions, with a total population of over 100 million. The wards of our province involve 104 counties and cities, with more than 3.8 million sick people and more than 17 million wards. More than 90% of its etiology is caused by excessive fluoride in drinking water. Therefore, the use of improved drinking water is an effective preventive measure. Many provinces use new wells to find underground low-fluorine water layers, or Using physical and chemical methods to remove fluorine, although this method can achieve the purpose of fluoride removal, due to the complex geologic and hydrological conditions, the well-forming rate is often not high, and the law of water layer change is not easy to grasp. Some water sources meet the national drinking standards when they start to supply water, but Drinking water soon began to pick up. Investigation materials of Jilin Province: Monitoring results of 74 wells, water fluoride recovery up to