【摘要】 本文对长平乡氟斑牙发病情况及氟源进行了调查分析。长平乡氟斑牙患病率为71.1%,成人尿氟平均值为2.52±0.71mg/L,明显高于对照区——张家坊乡;该乡燃木柴为炊。病区水氟不高,燃煤为炊,厨房空气平均氟含量为0.0210±0.0160mg/m~3;而对照区厨房空气平均氟含量为0.0012±0.0008mg/m~3。病区储存稻米和红辣椒的含氟量亦明显升高。结果显示,该乡的氟斑牙为燃烧煤污染型。更多还原

【Abstract】 An investigation and analysis of the incidence of fluoride mottled teeth andfluoride sources have been carried out in Changping township.The rate of inci-dence of flouride mottled teeth is 71.1%,Average value of the adults fluoride inthe urine is 2.52+0.71 mg/l.It is significantly higher than those in the controlarea Zhangjia(?)ang Township where burning firewood for cooking.Water fluori-de isn’t high in Changping,where burning coal for cooking.Fluoride contentin the air in the cookrooms is 0.0210±0.0160 mg/m.But in Zhangjia’ang,inthe cookrooms,Fluride content is 0.0012±0.0008 mg/m,which is far less thanthat in Changping.As for other objects,for example,in Changping,the Fl-uoride content in the stored rice and red cayenne pepper are apparently higher too,so we may come to the conclusion that in this area the source of fluoridemottled teeth belong to the type of Burning coal pollution.更多还原