【摘要】 本文探讨了国产茶叶（市售安徽产绿茶）对水中Cd²⁺、Pb²⁺、Sr²⁺的吸附特性。考察了抗坏血酸、柠檬酸、草酸等存在下,茶叶对水中Cd²⁺、Pb²⁺吸附能力的影响。于一定pH时及相同操作条件下,用60℃烘干碎成80目的茶,对Pb²⁺、Cd²⁺分别进行了11及7次测定,其吸附率均值Pb²⁺86.9％,Cd²⁺为41.3％,相对标准偏差是2.3％及2.7％。用未烘干粉碎的市售茶,对Pb²⁺、Cd²⁺分别进行7及6次测定,吸附率均值为96.4％及62.3％,相对标准偏差为1.8％及1.9％。更多还原

【Abstract】 In this paper, the adsorption property of Chinese tea for Cd2+, Pb2+, Sr2+ in water has been discussed. In the presence of ascorbic acid (vitamin C), citric acid or oxalic acid, the adsorption percentages of Cd2+, Pb2+ in tea water have been determined. In eleven separate experiments (pH = 4.3, the tea was dried at 60℃) the persentages of adsorption for Pb2+ are 86.9%, Cd2+ 41.3%, and the relative standard deviations are 2.3%, 2.7% respectively. In seven separate experiments (the tea is not dried), the persentages of adsorption for Pb2+, Cd2+ are 96.4% and 63.2%, the relative standard deviations are 1.8% and 1.9% respectively.更多还原