滦县榛子镇乡新发的8个氟病村位于县城西北40公里,地处半山区,在1.5平方公里范围内,有1184户、6087口人。1978年以前几代人都饮用大口井水,井深8～15米,历史上从未发生过氟中毒。自1978年8个村居民饮用新打机井水,井深40～70米。到1988年8个村青少年人群患了氟斑牙,为究其因,我们于1988年5月20日对各个村的饮水井进行采样,并用电极法检测氟含量,土井水氟含量均值0.33±0.05mg/L, Luanxian hazelnut township newly issued eight fluorine village is located 40 kilometers northwest of the county, is located in Mid-Levels area, within 1.5 square kilometers, there are 1184, 6087 people. Before 1978, generations of people drank large wells of well water and were 8 to 15 meters deep. Fluorosis never occurred in history. Since 1978, eight village residents drink a new hit well water well depth of 40 to 70 meters. By 1988, 8 village adolescents had dental fluorosis. To investigate their causes, we sampled drinking water wells of various villages on May 20, 1988. The fluorine content in soil was measured by electrode method. The average fluorine content in soil water was 0.33 ± 0.05mg / L,