论文部分内容阅读
茶叶是湖北省土特产之一,我国人民有饮茶的传统习惯。国内外资料曾报导茶叶中含有较多的氟,为确定茶叶中含氟量及其在总摄入量中所占的地位和茶叶氟防龋的意义。对该省主要品种的茶叶及茶水中含氟量进行了测定。样本来源及测定方法茶叶氟测定:由省烟、麻、茶公司及武汉茶场提供的茶叶,经干燥器干燥后,粉碎、过筛,以1NCl浸提1小时后,用氟电极法测定其中可溶性氟。茶水氟测定:取茶叶1克,用沸腾的无离子水100毫升沏泡30分钟,冷至室温,取
Tea is one of the native products of Hubei Province. Our people have the traditional habit of drinking tea. Domestic and foreign information has reported that tea contains more fluorine, to determine the amount of fluoride in tea and its position in the total intake and the significance of tea fluoride anti-caries. The main varieties of the province's tea and tea fluoride content was measured. Sample sources and determination methods Tea Fluoride Determination: Tea leaves provided by the provincial tobacco, hemp, tea companies and Wuhan tea plantation were dried in a desiccator, crushed, sieved and leached with 1NCl for 1 hour. The soluble content fluorine. Determination of tea Fluoride: Take 1 g of tea, with 100 ml boiling ion-free water for 30 minutes, cooled to room temperature, take