绿茶对Pb^（2＋）和Cu^（2＋）及Fe^（3＋）吸附性能的研究

THE GREEN TEA'S ADSORPTION OF Pb￣(2+),Cu￣(2+) and Fe￣(3+

讨论了经甲醛处理的绿茶对水中的Ｐｂ￣（２＋）和Ｃｕ￣（２＋）及Ｆｅ￣（３＋）的吸附性能，采用示波极谱和原子吸收分光光度法为测试手段，测得Ｐｂ￣（２＋）、Ｃｕ￣（２＋）和Ｆｅ￣（３＋）的吸附率平均值分别为８３．７２％、８３．５６％和８１．８９％。还考察了绿茶用量、金属离子浓度及ｐＨ值等因素对吸附率的影响．

It is a study of the green tea’s adsorption of Pb￣(2+),Cu￣(2+)and Fe￣(3+).By means of Oscillo- graphic Polarograph and Atomic Adsorption Spectrophotometer the average adsorptivity of those ions is mea-sured as 83.72%,83.56%and 81.89% respectively. A comparison is made between the treated and untreatedgreen tea in regard to the sorption. Also included is a study of factors that affect the adsorptivity such as thequantity of tea,the concentration of these metallic ions and the pH of the solution.In addition,the mechanismof sorption is investigated.