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新型固化单宁树脂的合成及其对痕量钯(Ⅱ)的吸附性能研究
引用本文:李璐,周方钦,田甜.新型固化单宁树脂的合成及其对痕量钯(Ⅱ)的吸附性能研究[J].分析科学学报,2009,25(2).
作者姓名:李璐  周方钦  田甜
作者单位:湘潭大学化学学院,环境友好化学与应用省部共建教育部重点实验室,湖南湘潭,411105
摘    要:报道了新型固化单宁树脂的合成方法及其对钯(Ⅱ)分离富集的研究.探讨了溶液pH值、温度、洗脱条件及干扰离子等对钯(Ⅱ)分离富集的影响.在pH=3,温度为25℃的条件下恒温水浴振荡20 min,痕量钯(Ⅱ)可被固化单宁树脂定量富集,其静态饱和吸附容量为44.91 mg·g-1.吸附的钯(Ⅱ)可用0.2 mol·L-1硫脲与0.2 mol·L-1盐酸混合液(体积比为1∶1)完全洗脱, 用火焰原子吸收光谱法(FAAS)测定.该法对钯(Ⅱ)的检出限(3σ,n=11)为0.091 μg·mL-1,相对标准偏差为2.69%(n=7),线性范围为0.16~8.2 μg·mL-1,加标回收率在97%~100%之间.方法用于催化剂中钯(Ⅱ)的测定,结果满意.

关 键 词:固化单宁树脂  分离富集  钯(Ⅱ)  火焰原子吸收光谱法  催化剂

Preparation of a New Tannins Immobilized Macroporous Resin and Its Adsorption Behavior Towards Pd(Ⅱ)
LI Lu,ZHOU Fang-qin,TIAN Tian.Preparation of a New Tannins Immobilized Macroporous Resin and Its Adsorption Behavior Towards Pd(Ⅱ)[J].Journal of Analytical Science,2009,25(2).
Authors:LI Lu  ZHOU Fang-qin  TIAN Tian
Institution:Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry ofEducation;College of Chemistry;Xiangtan University;Xiangtan 411105
Abstract:A new tannins immobilized macroporous resin was prepared and was used for the separation and preconcentration of palladium.The effect of solution pH,temperature,elution conditions and interference were studied and the optimized experimental conditions for preconcentration of trace palladium were established.The results showed that the material has not only highly selective affinity to Pd2+ but also a large adsorbent capacity.The static adsorption capacity of palladium on tannins immobilized macroporous resi...
Keywords:Tannins immobilized macroporous resin  Separation and preconcentration  Palladium  FAAS  Catalyzer  
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