溶胶-凝胶工艺制备掺铅TiO_2纳米薄膜及其光催化性能的研究

通过ｓｏｌ－ｇｅｌ工艺在玻璃表面制得了均匀透明的掺铅和未掺铅ＴｉＯ２纳米薄膜；在宏观上，膜层表面光滑平整；在微观上，ＴｉＯ２薄膜由ＴｉＯ２球形颗粒组成，其颗粒大小在５０～１５０ｎｍ范围内。掺铅ＴｉＯ２镀膜玻璃在紫外光附近的透光率明显小于未掺铅ＴｉＯ２镀膜玻璃的透光率，这说明掺铅ＴｉＯ２镀膜玻璃对紫外光具有明显的吸收。敌敌畏水溶液的光摧化降解实验表明，掺铅ＴｉＯ２镀膜玻璃对有机磷农药的光解率明显高于未掺铅ＴｉＯ２镀膜玻璃的光解率。这为进一步提高ＴｉＯ２的光催化效率开辟了新的途径。     

高铅铅阳极泥综合回收利用研究

根据高铅铅阳极泥的特点 ,对处理工艺和理论进行了研究。研究表明 ,该工艺成本低、收率高、污染小、可回收多种副产品 ,有效地解决了高铅铅阳极泥的处理和综合利用问题。     

天然沸石处理含铅废水的试验研究

试验天然沸石处理含铅废水的性能。对处理剂的用量及细度、铅的浓度、处理时间、PH值等因素对除铅效果的影响进行试验，表明天然沸石对含铅废水具有良好的处理效果；当PH在5～10之间，按Pb与沸石质量比为1：200加入沸石，铅的去除率大于98％。     

Removal of lead from aqueous solutions by condensed tannin gel adsorbent

Lead has caused serious environmental pollution due to its toxicity, accumulation in food chains and persistence in nature.In this paper, lead removal from aqueous solutions was investigated using condensed tannin gel adsorbent synthesized from a natural tannin compound. It is found that the adsorption is strongly affected by pH values of aqueous solutions.Within pH range of 3.5-6,when initial lead concentration is 100 mg/L, removal efficiency is more than 90%.Adsorption equilibrium is reached within 150 minutes.The adsorption isotherm fits well with the Langmuir equation, by which the saturated adsorption uptake of 190 mg Pb^2 /g dry tannin gel adsorbent is obtained.By means of thermodynamics analysis,it is revealed that the process is exothermic and the adsorption heat is up to 38.4kJ/mol.With respect to high efficiency, moderate pH requirement and minimized second pollution, the tannin gel adsorbent exhibits a promising potential in the removal of lead from wastewater.     

火焰原子吸收法测定香樟叶中的铅

文章介绍了火焰原子吸收法测定香樟叶中铅含量的样品处理方法，测定条件，测定结果的准确度精度。     

萃取火焰原子吸收法同时测定土壤及蔬菜中铅镉的条件

用TOA-IBK系统革取,火焰原子吸收光谱法在同一条件下测定土壤、蔬菜中的铅镉.考察了TOA、KI、盐酸、抗坏血酸用量、革取时间、放置时间及在同等实验条件下钙、镁、铁等金属离子和酸的用量的干扰影响情况.