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中文摘要：
利用浸渍法对纳米二氧化钛进行表面改性，制备出改性纳米二氧化钛，用扫描电镜（SEM）对其进行了表征，并以其为吸附剂，以火焰原子吸收光谱法（FAAS）为分析手段，探讨了改性纳米二氧化钛在静态吸附条件下对Ph（Ⅱ）的吸附性能，考察了影响其吸附和解脱的主要因素及优化条件下Pb（Ⅱ）的吸附容量，考察了常见共存离子的影响。结果表明：在pH5．0下，改性纳米二氧化钛能定量吸附Pb（Ⅱ）；1．0mol／LHNO3作为解脱剂可使Pb（Ⅱ）定量解脱；优化条件下Pb（Ⅱ）的静态饱和吸附容量为32．88mg／g。
英文摘要：
The modified nanometer-sized TiO2 as a solid sorbent was prepared characterized by using SEM. The adsorption properties of the sorbent to Pb（ Ⅱ ） encing adsorption and desorption, adsorption isotherms and influence of common by using impregnation method, and in static system, main factors influexistent ions on the determination of Pb（ Ⅱ ） were investigated by flame atomic adsorption spectrometry （FAAS）. Under the optimal conditions, Pb（ Ⅱ ） ions were adsorbed quantitatively onto 0. 2000 g sorbent at pH 5.0, complete elution was carried out with 10 mL 1.0 mol/L HNO3, and the adsorption capacity of Pb（ Ⅱ ） was 32.88 mg/g. The proposed method had been applied to the analysis of environmental samples with satisfactory results.
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