基于FIA-ISE测定WACR交换性能的研究  

RESEARCH ON EXCHANGE PERFORMANCE OF WACR BY FIA-ISE METHOD

作　　者：常雪洁[1] 李永生[1] 黄波[1] 高彩萍[1] 

机构地区：[1]四川大学化学工程学院,成都610065

出　　处：《离子交换与吸附》2009年第6期481-487,共7页Ion Exchange and Adsorption

基　　金：教育部留学回国人员科研启动基金(2300448);四川大学214人才引进振兴计划基金(No.0082204127067)

摘　　要：基于FIA-ISE测定痕量Na+原理,建立了一种自动测定弱酸性阳离子交换树脂(WACR)交换性能的方法。本研究对WACR交换性能的各影响因素进行考察,优选出其测定条件:微型交换柱内径3.0mm、长80mm;交换反应温度33℃;树脂填充量0.1762g;样品为NaOH溶液(Na+浓度10mg/L),流速0.92mL/min;再生剂(HCl)浓度4%,流速1.25mL/min,用量40mL。本方法实现了一次测定同时获得WACR平衡交换容量(Eq)、全交换容量(Et)和利用率(η)等多个指标。与GB法对比,二者相关性好(r=0.9904)。Based on FIA-ISE method for rapid determination of trace sodium ion, a new method to determine exchange performance of weak acidic cation resin （WACR） was developed. During the research on factors affecting the exchange performance of WACR, optimum conditions were obtained： Inner diameter and length of the mini-exchange column is 3.0mm and 60mm; Temperature of ion exchange reaction is 33℃; Dosage of the resin is 0.1762g; Sample is NaOH solution （Concentration of Na＋ is 10mg/L）, its flow rate is 0.92mL/min; Concentration of the regeneration agent （HC1） is 4.0%, its flow rate is 1.25mL/min, and its dosage is 40mL. Correlation between FIA-ISE and GB is good （r=0.9904）. The method can be used to determine the exchange performance （equilibrium exchange capacity, total exchange capacity, using rate, etc） of weak acidic cation resin with single experiment.

关 键 词：弱酸性阳离子交换树脂 交换性能 流动注射 离子选择性电极 微型交换柱 钠离子 

分 类 号：TQ425.21[化学工程]