湖北宜昌黑茶氟含量研究.pdfVIP

安徽农业科学，Joumal of Anhui Agri. Sci. 2016 ,44( 34) :59 - 61 责任编缉李菲菲责任校对况玲玲 湖北宜昌黑茶氟含量研究 李涛1 气梁静宇2 ，张文雅2 ，韩蔓更2 ，王俊雄2 ，任道金2 (1.三峡大学茶叶研究中心，湖北宜昌 443阳;2. 三峡大学生物与制药学院，湖北宜昌 443∞2) 摘要 [目的]研究湖北宜昌黑茶氟含量，估算宜昌居民的氟离子摄入量。[方法]利用氟离子电极法，测定湖北宜昌自来水氟含量及供 试5 个批次宜昌黑茶的氟含量，分析冲泡过程中氟离子溶解特性。[结果]2014 年 1 月 6 日湖北宜昌自来水的氟含量为(0. 1l2:t 0.C阴) mglL，为氟含量偏低的自来水。供试5 个批次宜昌黑茶氟含量分别为(113 士 6) 、(170 士 7) 、(190 士 7) 、 (255 :1: 8) 和(246 士的mg/岭，加标 回收率在94. 1 % - 104. 6% ，宜昌黑茶氟含量符合砖茶氟含量国家标准(3∞ mg/kg) 0 5 个批次宜昌黑茶洗茶2 次后再冲泡，茶水中氟离 子浓度在(0.107 :1: 0. ∞8) -(0.939 :1: 0.031)mg/L，符合饮用水氟含量国标。[结论]湖北宜昌自来水氟含量偏低，供试5 个批次的湖北 宜昌黑茶氟含量符合国家标准，可以作为一种安全的氟来源。 关键词 氟;氟离子选择电极;自来水;黑茶 中圈分类号 5571. 1;TS272. 5 可 文献标识码 A 文章编号 0517 -6611(2016)34-∞59 -03 Study on the Content of F1uoride 恒 Hubei Yichang Dark T锦 1 1 LI Tao ,2 , LIANG Jing_yul , ZHANG Wen-ya et al (1. T，四 Research Center of China Three Gorges University , Yichang , Hubei 443α2; 2. College of Biological and Pharmaceutical 5ciences , China Three Gorges University , Yichang , Huhei 443∞2) A胎tract [ Objective ]币le aim w描 to study fluoride contenl in black tea from Yichang , Huhei , to estimate residents fluoride ion intake. [ MethodJ The contents of fluoride of tap water in Yichang , Huhei Province and five batches of Yichang dark le描 were detennined by fluoride ion selective electr，耐.咀e di酬lution features of fluoride in those infusing teas were studied. [Result] The content of fluoride of tap water in Yichang on Jan. 6 in 2014 , which is on the low side , w描 (0.112 :1: 0.(削) mglL. ηle contents of fluoride of five batches of Hubei Yichang dark teas were (113 士的， (170 :1: 7) , (190 :1: 7) , (255 :1: 8) and (246 :1: 8) mg/kgre耻ctively. The recove可 of standard were from 94. 1 to 104. 6%. 币le fluoride contents of five batches of those dark te田 meet the national standards of the fluoride conlenl in brick tea (3∞ mglkg).ηle flu-