忻州市改水降氟防治饮水型氟中毒效果分析

目的了解忻州市改水降氟工程运行状况,掌握病情流行动态,为今后改水降氟工作提供科学依据。方法水氟测定按照《生活饮用水标准检验方法》(GB/T 5750—2006);尿氟采用氟离子选择电极法(WS/T89—2006);氟斑牙采用Dean法;临床氟骨症和X线氟骨症诊断采用《地方性氟骨症诊断标准》(WS/T192—2007)。结果全市累计改水降氟221处,覆盖病区村230个,受益人口28.2万,占病区总人口的70.3%。检测居民饮用水462份,水氟均值为1.08 mg/L,范围值0.56～4.97 mg/L。检查8岁～12岁儿童氟斑牙7 352人,总检出率为26.63%,氟斑牙指数为0.57。测定儿童尿样1 368份,总样本尿氟几何均值为1.67 mg/L,范围值0.52～15.36 mg/L。检查16周岁以上人群31 728人,检出临床氟骨症患者4 841例,总检出率为15.26%;行X线摄片622人,检出X线氟骨症110人,检出率为17.68%。结论忻州市改水降氟工程取得了可喜的成效,饮水型氟中毒病情得到控制。但在局部病情流行还较为严重,防治工作仍然任重道远。

improvement to reduce fluoride treatment in Xinzhou city

Objective To survey Xinzhou city water-improving and operation status of reducing fluoride, grasp the epidemic dynamics, and provide scientific basis for future defluoridation work.Methods In accordance with the “standards for drinking water quality ” （GB/T 5750 - 2006） fluorosis in drinking water was analyzed; urinary fluoride was detected by fluoride ion selective electrode method （WS/T 89-2006）; dental fluorosis by Dean method; clinical osteofluorosis and X-ray diagnosis of fluorosis of bone used “ endemic fluorine bone disease diagnosis standard ” （ WS/T192 - 2007 ）Results Total water improvement sites to reduce fluoride in the city were 221, including 230 ward village, the beneficiary population was 282,000, which accout for 70.3%the total population. 462 residents drinking water was detected, the water fluoride value was 1.08 mg/L, range was from 0.56 to 4.97 mg/L dental fiuorosis was 7,352 cases from 8 to 12 years old children, total detection rate was 26.63%, dental fluorosis index was 0.57. 1368 children＇s urine were detected, the mean value of total urine was 1.67 mg/L,the range was from 0.52 to 15.36 mg/L. 3 I, 728 people over 16 years of age were detected, clinical skeletal fluorosis patients were 4,841 cases, total detection rate was 15.26%; 622 cases received x-ray film, 110 cases were with skeletal fluorosis,the detection rate was 17.68%. Conclusion Xinzhou City defluoridation project has made great achievements, drinking water type fluorosis disease was under control. But local epidemic was more serious condition, prevention work still has a long way to go.