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基于纳尔贡达地区不同地点水氟含量初测资料,在已知病区重新采集410份包括所有20个村可饮用的水源水做了全面化学分析。水样收集于2升聚乙烯桶内,测定pH、电导率、碱度、硬度、钙、镁、铁、铝、钠、钾_烹狡肠篡I卜栋饮翩干’~"卜~山忆。对儿童的临床检查表明不同程度的氟牙,其发病率不仅与水氟浓度相关。表1示在氟化物浓箕关,也与碱同的情况下症磷酸盐、硫酸盐和二氧化硅。对100份
Based on the initial test of fluoride content in different locations in Nalgonda, a total of 410 chemical waters including all 20 village drinking water sources were re-collected in known wards. Water samples collected in 2 liters of polyethylene barrel, the determination of pH, conductivity, alkalinity, hardness, calcium, magnesium, iron, aluminum, sodium and potassium _ Hill recalls that the clinical examination of children shows that different degrees of dental fluorosis, the incidence is not only related to the water fluoride concentration.Figure 1 shows the concentration of fluoride Kei Guan, also with alkali the same situation of hypophosphates, sulfates and bis Silica. For 100 parts