新建厂区冷冻站的设计思路

对新区建设过程中冷冻站的设计思路进行了阐述和比较.     

用次灵敏线原子吸收光谱法测定镍精粉中高含量的镍

研究了采用镍305.1nm次灵敏线测定镍精粉中高含量镍的分析条件,样品经三酸溶解后,定容到一定体积,可不经稀释直接用原子吸收光谱法测定。此法简便、快速、精密度和准确度良好,用于镍精粉及低冰镍中高含量镍的测定,结果满意。     

原子吸收次灵敏线法直接测定土壤中Fe、Mn

用原子吸收次灵敏线法塞曼效应扣除背景测定土壤中Fe、Mn,实验结果表明:此方法有较好的准确度,精密度,操作简单,适合一般土壤中Fe、Mn的测定。     

原子吸收法测定高盐食品中铅时的干扰及其排除

本文阐明了原子吸收法测定高盐食品中铅时氯化钠的干扰情况，并排除的有效方法和结果。     

石墨炉原子吸收法测定硝酸银中的痕量铜

石墨炉原子吸收法测定硝酸银中的痕量铜亓平言，雷文（清华大学化工系，北京１０００８４）关键词痕量分析，铜，硝酸银，原子吸收高纯硝酸银不仅是感光材料工业的基本原料之一，在催化剂的制备中也有广泛的应用。其纯度对其使用性能有着不可忽视的影响．因此，国内外许多...     

Sensitizing Mechanism and Adsorption Properties of Dye—Sensitized TiO2 Thin Films

The dye-sensitized TiO2 complex films were prepared by the dye coat onto TiO2 surfaces,and the sensitizing mechanism and adsorption properties of the dye-sensitized TiO2 complex films were inverstigated.The influence of the application conditions of dye adsorbed on TiO2 films on the amount of dye adsorption was discussed.Experimental results show that the concentration,the temperature of dye solutions and the dipping time of TiO2 films in the dye solutions have a significant influence on the amount of dye adsorption.Cell test indicates that the conversion efficiency of light to electricity increases with the amount of dye adsorption.