二苯并18－冠－6辅助钡离子在1，2－二氯乙烷／水微界面转移的伏安研究

应用液／液界面微电极对二苯并１８－冠－６（ＤＢ１８－Ｃ－６）辅助推动Ｂａ~（２＋）在１，２－二氯乙烷／水（ＤＣＥ／Ｗ）界面转移的电化学过程进行了详细探讨，证明该过程遵循ＴＩＣ机理，是受扩散控制的可逆过程。通过转移电流和反应物浓度之间的线性关系，测定了Ｂａ~（２＋）以及用其它方法难以测定的ＤＢ１８－Ｃ－６。     

电感耦合等离子发射光谱法测定渣油中铁、镍、钙、镁、钠、钒金属元素

用电感耦合等离子发射光谱法（ICP-AES）测定渣油中金属元素铁、镍、钙、镁、钠、钒，考察了不同的酸浓度对分析结果的影响和共存元素间的相互干扰，进行了加标回收率和精密度试验。     

有机小分子染料和聚阳离子分子超薄膜的制备及其摩擦学性能研究

制备了以有机小分子染料酸性红 1 8为阴离子、以聚烯丙基氯化铵和聚乙烯亚胺为聚阳离子的分子沉积膜 ,用紫外可见分光光度计、接触角测定仪和椭圆偏振光测厚仪对所制备的超薄膜进行了表征 .用DF PM型动 静摩擦系数精密测定装置考察了超薄膜的摩擦学性能 ,采用扫描电子显微镜对薄膜的磨痕表面进行了观察 .结果表明 ,所制备的超薄复合沉积膜具有良好的减摩和耐磨性能     

沉淀二氧化硅消光剂的制备研究

涂料中的消光剂是一类能够改变涂膜表面光学性能的助剂。这类助剂能够在涂膜表面产生预期微粗糙度,使涂膜的光泽显著降低,给人一种古朴典雅的感觉。近几年来,我国的涂料工业方兴未艾,涂料总产量也跃居世界的前列。在这期间高光泽的亮光涂料以其色泽鲜艳、明亮等优点深受消费者的喜爱,并在相当长的时间内一统着涂料市场[1]。但是,随着人们生活水平的不断提高,一方面消费者感觉到了高光泽的亮光涂料成膜后反光比较严重,对人的眼睛有害;另一方面消费者的审美观念越来越倾向于休闲、时尚和个性化。这些因素就导致了人们对具有柔和外观的低光泽涂…     

富锌排铅咀嚼片安全性毒理学评价

对富锌排铅咀嚼片(RZLR)进行了急性毒性试验、Ames试验、骨髓微核试验、精子畸形试验和30 d喂养试验。结果表明,小鼠急性毒性LD50(BW)>21 500 mg/kg,属无毒级;Ames试验、小鼠骨髓微核试验、精子畸形试验和30 d喂养试验结果均为阴性;30 d喂养试验也未显示明显毒性。本研究证实RZLR是一种安全、无毒副作用的保健食品。     

Dense Sphene-type Solid Electrolyte Through Rapid Sintering for Solid-state Lithium Metal Battery

The sphene-type solid electrolyte with high ionic conductivity has been designed for solid-state lithium metal battery. However, the practical applications of solid electrolytes are still suffered by the low relative density and long sintering time of tens of hours with large energy consumption. Here, we introduced the spark plasma sintering technology for fabricating the sphene-type Li_1.125Ta_0.875Zr_0.125SiO₅ solid electrolyte. The dense electrolyte pellet with high relative density of ca. 97.4% and ionic conductivity of ca. 1.44×10^-5 S/cm at 30℃ can be obtained by spark plasma sintering process within the extremely short time of only ca. 0.1 h. Also the solid electrolyte provides stable electrochemical window of ca. 6.0 V(vs. Li⁺/Li) and high electrochemical interface stability toward Li metal anode. With the enhanced interfacial contacts between electrodes and electrolyte pellet by the in-situ formed polymer electrolyte, the solid-state lithium metal battery with LiFePO₄ cathode can deliver the initial discharge capacity of ca. 154 mA·h/g at 0.1 C and the reversible capacity of ca. 132 mA·h/g after 70 cycles with high Coulombic efficiency of 99.5% at 55℃. Therefore, this study demonstrates a rapid and energy efficient sintering strategy for fabricating the solid electrolyte with dense structure and high ionic conductivity that can be practically applied in solid-state lithium metal batteries with high energy densities and safeties.     

FTIR－PAS技术在卟啉类化合物中的应用（Ⅲ）──乙酰丙酮－meso－四－（对－氯代）苯基卟啉稀土配合物的红外光声光谱

研究乙酰丙酮－ｍｅｓｏ－四－（对－氯代）苯基卟啉及其Ｎｄ、Ｓｍ、Ｅｕ、Ｇｄ、Ｔｂ、Ｄｙ、Ｈｏ、Ｅｒ、Ｌｕ配合物在３６００～２２０ｃｍ－１范围内的傅立叶变换红外光声光谱，对其主要谱带进行经验归属．实验结果表明，四－（对－氯代）苯基卟啉与稀土乙酰丙酮配合物中的金属离子配位，削弱乙酰丙酮环上的Ｍ－Ｏ键伸缩振动，使该谱带向低波数方向移动．金属敏感带出现在～１５５８、～１４７４、～１４２７、～１２１９、～７９８、～７３３、～２５０ｃｍ－１．     

A New Bislabdane-type Diterpenoid from Cunninghamia lanceolata

Cunninghmia lanceolata Hook. is a traditional Chinese medicine used for thetreatment of hernia, arthritis and strangury. its chemical constituents have beenexamined]' 2' 3' '. In a previous paper we reported a bislabdane-type diterpenoidlanceolatic acid from the roots of the plant 5. Further chemical studies on this plantled to the isolation of another new bislabdane-type diterpenoid, named lanceolatin(I ).Compound I was obtained as white amorphous powder. mp 232-234 'C, [a]."-24 (c 0. 10, C…     

Bentone-34/OV-1毛细管柱的研制及其分离性能

自行研制了Bentone-34/OV-1高效石英毛细管气相色谱柱,并利用该柱分别对二甲苯、二氯苯和二氯甲苯异构体3种体系进行分析.在选用的色谱条件下,难分离物质对二甲苯和间二甲苯分离度达3;间二氯苯和对二氯苯分离度达1 3.结果表明该柱具有分离效果好,分析速度快的优点.