水相中三丁基锡预富集方法研究

A methodological study on enrichment of tributylitin(TBT) compound

首次用ｘ－５树脂吸附三丁基锡（ＴＢＴ）化合物。结果表明，Ｘ－５树脂吸附ＴＢＴ化合物具有吸附容量大、吸附速度快等优点，符合Ｆｒｅｕｎｄｌｉｃｈ吸附等温式；用自制的吸附注（长度为１１ｃｍ，内径为０．５５ｃｍ的玻璃管，内装ｘ－５大孔网状树脂，约０．７ｇ）作ＴＢＴ吸附剂，研究各种因素对吸附及脱附效率的影响。结果表明，吸附率主要取决于柱长及流速，而溶液的盐度及ｐＨ值影响不大；脱附率主要取决于洗脱剂的流速，而ｐＨ值影响不大；实际样品的回收率超过９０％。

In this study X-5 macro-reticulate resin was used for the first time as an absorbent for tributyltin(TBT) compound. The results show that X-5 resin has larger adsorptive capacity and rapid adsorption rate. Its adsorption isothem follws Freundlich equation. Using a homemade adsorption column(11×0.55cm id glass column packed with 0. 7g of X-5 resin), various factors which influence the adsorption and desorption efficiencies were investigated. The results suggest that the adsorption efficiency is mainly dependent on column length and flow rate of the eluant,but less affected by salinity and pH value. Desoption efficiency is only dependent on the flow rate and less influenced by pH value. Recovery of the water sample is more than 90%.