用苯甲醛保护胺基后,将2-氨基-5-巯基-1,3,4-噻二唑引入到大孔壳聚糖微球上,合成了亲水性的多孔球状吸附树脂(CTS-AMT).对比研究了CTS-AMT和母体微球(CTS)对Zn2+、Cy2+、Cd2+、Pb2+、Ag+和Hg2+的吸附性能.结果表明,pH=5.0,T=298.15 K时,CTS-AMT树脂对上述金属离子的吸附在1.5 h内基本达到平衡,对金属离子Hg2+、Ag+和Pb2+的静态饱和吸附量分别为2.54、2.31和1.71 mmol/g.在实验浓度范围内该树脂对Hg2+的吸附过程符合Langmuir等温吸附模型.
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