【摘要】 合成了对Hg²⁺、Ag+等金属离子具有大螯合容量的聚砜苄硫脲螯合滤膜。该膜对Hg²⁺、Ag⁺的最大螯合容量分别为600ug/cm²（335mg Hg（2+）/g）和1360ug/cm²（759mg Ag⁺/g）。硫脲官能基对Hg²⁺的螯合比为1:1。探讨了基膜性质,硫脲反应时间、温度和硫脲浓度对螯合容量的影响,研究了膜对Hg²⁺的螯合吸附速率及盐溶液pH值、温度和盐浓度对螯合容量的影响。用动态法测得膜对Hg²⁺的螯合容量为811ug/cm²。该膜可用来从水中捕集Hg²⁺、Ag⁺等金属离子。更多还原

【Abstract】 Chelate membranes of polysulfonebenzalthiourea with high chelate capacity for Hg²⁺ and Ag⁺ have been prepared. The greatest chelate capacity of the Membranes for Hg²⁺ is 600μg/cm²·memb. （337mg/g·memb.）, ard 1360μg/cm²·memb. （759mg/g·memb.） for Ag⁺. The chelate mole ratio of Hg²⁺/—S—C（?） approximates 1. The effects of reactive time, temperature and thiourea concentration on chelate properties were also studied. The chelate rate of thiourea chelate membrane for Hg²⁺ in the solution was measured. The relationship among the chelate capacity and pH, temperature, metal ions concentration of the solution was examined. The dynamic state chelate capacity of the membrane for Hg²⁺ is 811μg/cm²·memb. The membrane can be used to collect Hg²⁺、Ag⁺ etc metal ions.更多还原