绿茶对水中铀(Ⅵ)、钍(Ⅳ)离子的捕集行为 |
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引用本文: | 周发连,谢小风,唐辉,谭振宇.绿茶对水中铀(Ⅵ)、钍(Ⅳ)离子的捕集行为[J].分析化学,2002,30(3):355-358. |
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作者姓名: | 周发连 谢小风 唐辉 谭振宇 |
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作者单位: | 华东地质学院应用化学系,抚州,344000 |
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摘 要: | 研究了铀、钍被绿茶捕集的行为,在pH=4-6和pH=4-5的条件下,这两种离子的捕集率分别在90%以上。铀、钍的捕集容量分别为8.12mg/g和5.00mg/g;捕集后的铀(Ⅵ)和钍(Ⅳ)分别用3.5mol/L和5.0mol/L的盐酸定量洗脱。脱附后的茶叶可以得到再生,再生茶叶可重新利用。
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关 键 词: | 绿茶 铀(Ⅵ) 钍(Ⅳ) 捕集行为 水 富集 吸附 脱附 |
Adsorption Behavior of Uranium Ion and Thorium Ion on Green Tea |
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Abstract: | The adsorption behavior of U? and Th? from solution by green tea has been studied. Under the optimum conditions, the adsorption rate and capacity are found to be 90% and 8.12 mg/g for U?, and 90% and 5.00 mg/g for Th? respectively. U? and Th? absorbed on the tea can be eluted by hydrochloric acid. The tea can be easily regenerated by using 0.02 mol/L NaOH solution |
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Keywords: | Green tea uranium thorium adsorption behavior |
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