闭式硼烷阴离子等的半拓扑图式研究

本文用Ｌｉｐｓｃｏｍｂ的半拓扑图式理论研究了闭式结构的硼烷阴离子等的结构和化学键，结果令人满意     

应用氢化物发生、空气加入和石英炉原子化器的低压原子吸收光谱法测定硒

本文讨论了硼氧化钠加入量、石英管内原子化温度和毛细管阻尼器等重要实验参数对于硒测量灵敏度的影响．当硼氢化钠加入量较大时，所得的信号存在双峰，而且其峰高降低了很多．由于硒化氢的原子化是在负压下完成的，它将比常压或载气压力下更有利于氢化物的原子化，因而使硒化氢原子化的最佳温度降低．毛细管的长度对硒测量灵敏度影响不大，但其内径的影响较为明显．     

流动注射氢化物发生法测定中药材中汞含量

流动注射氢化物发生法用于中药材中痕量汞的测定,研究了酸度,还原剂浓度,载气流速的参数对吸收值的影响.测定中药材中的汞含量,检测限为0.054 4 ng.mL-1,线性范围0-70 ng.mL-1,经测定汞含量均在17-107 ng.g-1之间,测量相对标准偏差为3.49%.该方法操作简便,快速,灵敏度高,能够用于环境样品中微量汞的测定.     

硅烷接枝交联HDPE的研究

以转矩流变仪为反应器，乙烯基-三乙氧基硅烷为接枝单体，制备了硅烷接枝交联高密度聚乙烯产品，并对接枝物进行了FT-IR分析。研究了引发剂（DCP）及硅烷含量、交联催化剂对体系凝胶含量的影响。     

Study on the determination of antimony by HG-ICP-AES associated with a flow injection activated carbon microcolumn adsorption and separation system

An activated carbon (A. C.) microcolumn was used for dynamic adsorption and separaction of antimony. It was found that antimony could be adsorpted by activated carbon in strong hydrochloric acid medium and separated from other interference ions: the adsorpted antimony could be eluted from the activated carbon microcolumn with 2.0 mol/L NH₃·H₂O. A new liquid/gas phase separator was designed and used for hydride generation of antimony in alkaline mode followed by ICP-AES determination. The analytical sensitivity and selectivity were greatly improved with the above-mentioned separation/determination system. This method has been applied to the analysis of trace antimony in standard samples of sediment GSD-12 and ore GBW07236 with satisfactory results. Supported by Natural Science Foundation of Hubei Province and Fundation of Chinese Academy of Science for Huge Instrument Function Exploration Liu Huaizhi, born in Oct. 1968. Ph.D. graduate Student     

LiH薄膜制备技术进展

纳米厚度、表面光滑的氢化锂薄膜的制备研究具有十分重要的意义。综述了氢化锂薄膜的制备方法:电阻蒸发法和磁控溅射法。比较研究后认为这两种制备方法制备的氢化锂薄膜,表面粗糙度高,不能达到软x射线多层膜的要求。而脉冲激光气相沉积法可以制备表面超光洁,厚度最小为几个纳米的薄膜,是制备表面光滑的薄膜的一种重要制备方法。     

微波消解氢化物发生-ICP-AES测定巴豆中砷锑铋

建立了微波消解-氢化物发生-电感耦合等离子体发射光谱联用技术测定中药巴豆中砷、锑、铋的方法,并对微波消解、氢化物发生条件、电感耦合等离子体原子发射光谱工作条件等进行了优化选择,砷、锑、铋的检出限分别为1.5,1.9,1.2μg·L-1,相对标准偏差分别为4.1%,3.8%,4.2%,结果满意.     

A New Reducing Regent; Dichloroindium Hydride

Among the hydride derivatives of group 13 elements, various types of aluminum hydrides and boron hydrides have been employed as powerful reduction tools. Indium hydrides have not received much attention, whereas the synthesis of indium trihydride （InH3） was reported several decades ago. There have been no precedents for monometallic indium hydrides having practical reactivity, while activated hydrides such as an ate complex LiPh, InH4-n （n = 0-2） and phosphine-coordinated indium hydrides readily reduce carbonyl compounds. In view of this background, we focused on the development of dichloroindium hydrides （Cl2InH） as novel reducing agents that bear characteristic features in both ionic and radical reactions.     

海南野生灵芝和种植灵芝中硒含量的测定

采用干法灰化和湿法消化两种处理方法分别对两类灵芝样品进行消解,用氢化物发生-原子荧光光谱法同时测定了灵芝样品中的硒(Se)含量,选择了最佳测定条件.结果表明,野生灵芝中的硒含量远远高于种植灵芝.     

氢化钛－铝混合粉机械合金化研究

用ＳＥＭ，ＸＲＤ，ＤＴＡ方法研究了氢化铁与铝的混合粉在搅拌球磨过程中粉末的形貌和物相变化。实验结果表明，球磨４８ｈ后出现非晶化，氢化钛可以降低球磨初始阶段的过分冷焊现象，在搅拌球磨过程中氢化钛发生脱氢反应，脱氢后的Ｔｉ易与球磨气氛中残余氮气形成氮化物。