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中文摘要：
利用浸渍法制备双硫腙修饰的三钛酸钠晶须，再以其为吸附剂富集分离Pb（Ⅱ）。用火焰原子吸收光谱法（FAAS）探讨了双硫腙修饰的三钛酸钠晶须对Pb（Ⅱ）的吸附行为及影响其吸附和解脱的主要因素。考察了共存离子对铅测定的影响以及双硫腙修饰的三钛酸钠晶须对Pb（Ⅱ）的吸附容量，同时还进行了选择性比较实验。结果表明，在pH6．0下0．2000g双硫腙修饰的三钛酸钠晶须能定量吸附Pb（II），10mL0．5mol／L的HNO。能定量解脱Pb（Ⅱ），用双硫腙修饰过的三钛酸钠晶须比未修饰的三钛酸钠晶须对Pb（Ⅱ）更具有良好的吸附性和选择性。该吸附剂已用于环境水样中铅的测定。
英文摘要：
The dithizone-modified sodium trititanate whisker prepared with immersion method was used as adsorbent to enrich and separate Pb（II）. The adsorptive behaviors of dithizone-modified sodium trititanate whisker to Pb（Ⅱ）and the major factors affecting the adsorption and desorption were studied by flame atomic absorption spectrometry （FAAS）. The effects of coexisting ions on the determination of lead and the adsorption capacity of dithizone-modified sodium trititanate whisker to Pb（II） were in~ vestigated. Meanwhile, the comparison tests of selectivity were conducted. The results showed that Pb（Ⅱ） couId be quantitatively adsorbed by 0. 200 0 g of dithizone-modified sodium trititanate whisker at pH 6.0, and then quantitatively desorbed by 10 mL of 0.5 mol/L HNOa. Compared with unmodified sodium trititanate whisker, the dithizone-modified sodium trititanate whisker exhibited better adsorption capacity and selectivity. This adsorbent has been applied to the determination of lead in environmental water samples.
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