摘要
目的 观察蛇纹石活化后降砖茶水氟效果及降氟前、后砖茶水化学成分的改变。方法 按少数民族饮砖茶习惯熬制的砖茶水 (含茶 5 g/ L,砖茶水含氟量约 3.5 2 m g/ L)经活化蛇纹石处理后 ,观察其氟含量及砖茶水水质变化。用电极法测砖茶水氟含量。用原子吸收分光光度法测砖茶水中 Mg、Ca、Zn、Fe、Cu等元素含量。结果 活化蛇纹石对砖茶水有降氟作用 ,在最佳条件下蛇纹石降氟容量可达 0 .31m g/ g;降氟后砖茶水中镁、钙、锌、铁、铜含量均有不同程度升高。结论 蛇纹石作为一种降氟剂是安全、价廉、有效 ,并能释放有益人体健康的元素。
Objective To observe the effect of defluoridation of brick-tea water with active serpentine and the changes of chemical components in it with or without serpentine.Methods According to the habit of local minority nationality the brick-tea water containing 5g tea per liter water(fluoride content is 3.25 mg/L) was prepared. Fluoride and magnesium, calcium etc content in brick-tea water was determined with ion-selective electrode(ISE) and atomic absorption spectrophotometer(AAS).Results Active serpentine has a good effect of defluoridation and the best defluoridation capacity is 0.31 mg/g. We also found a increasing contents of heath element( i.e. magnesium, calcium, zinc, iron and copper) in brick-tea water treated with serpentine.Conclusions The serpentine is proved to be safe, cheap as well as effective and economic defluoridator. It is benefit that the serpentine can release health elements.
出处
《中国地方病学杂志》
CAS
CSCD
北大核心
2003年第1期16-18,共3页
Chinese Jouranl of Endemiology
