方法：用氟离子选择电极法检测水氟含量。
Method: Fluoride level in drinking water was examined with F-ion selective electrode method.
目的了解河南省降氟改水打井工程水氟含量和工程使用情况。
Objective To understand water fluoride concentration and application of the fluoride lowering well digging projects in Henan Province.
方法：水氟含量采用氟离子选择电极法进行检测，儿童氟斑牙采用三型九度法。
Methods The fluoride contents were tested by fluoride selective ion electrode, dental fluorosis prevalence rate of children was examined according to clinical diagnosis standard.
方法：水氟含量采用氟离子选择电极法进行检测，儿童氟斑牙诊断采用三型九度法。
Methods The fluoride content in water was determined by fluoride selective ion electron, and dental fluorosis of children was examined according to clinical diagnosis standard.
方法：采取整群抽样办法，对被调查县1996年前的所有改水工程水氟含量、打井深度、井壁结构材料和井周封闭土质进行调查分析。
Methods: Using cluster sampling, the water fluoride content, depth of well, materials of well as well as quality of blocking soil of FCRWQIP before 1996 in Xinyang were measured.
以上几种降氟剂根据水质不同可单独使用，也可钙、镁两种降氟剂混合使用。使用方法有煮沸法，接触沉淀法、滤柱过滤法来处理高氟水，其水氟含量可达到正常饮用标准。
High fluorine water can be treated by boiling method, contact precipitation method or column filter method, the content of fluorine for processed water can meet normal drinking standard.
检查流量计，压力表和其他记录仪器，测量水的输出水平和消费水平，细菌含量，氯和氟水平。
Read flow meters, gauges and other recording instruments to measure water output and consumption levels, bacterial content, chlorine and fluoride levels.
方法对该市不同地点抽取的市售辣椒、茶叶、玉米、大米、牙膏、自来水和矿泉水，采用氟离子选择电极法测定氟含量。
Methods Fluoride ion (f) -selective electrode method was used to determine fluorin content of capsicum, tea, corn, rice, toothpaste, tap water and mineral water.
土壤是固、液、气三相共存体，氟在土-水-植物、动物界面的转化可通过土壤水溶性氟含量表征。
Fluorine transformation in soil-water-plant and animal system can be represented by soil soluble fluorine content.
儿童氟斑牙患病率和儿童尿氟含量均随改水年限的延长呈下降趋势。
Children's dental fluorosis rates and children's urine fluorine content linearly with improvement of water of the length of extended to drop.
儿童氟斑牙患病率和儿童尿氟含量均随改水年限的延长呈下降趋势。
Children's dental fluorosis rates and children's urine fluorine content linearly with improvement of water of the length of extended to drop.
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