牛血清白蛋白的压电免疫测定及电极的洗脱

在镀银石英晶片上用压电免疫方法测定了０．５～５０ｍｇ／Ｌ范围内的牛血清白蛋白的浓度，得到线性响应；并较全面地研究了压电晶片的回复性使用问题，以０．２ｍｏｌ／Ｌ甘氨酸－盐酸（ｐＨ＝２．０）溶液洗脱时效果较好     

La2O3对氧化铝透明陶瓷显微结构和透光性能的影响

采用传统无压烧结工艺在氢气氛下制备Al2O3透明陶瓷。实验结果表明：MgO和La2O3复合添加时，随着La2O3掺杂量的增加体积密度总体上保持上升的趋势。随着保温时间的延长，陶瓷的致密化程度增大，残余气孔逐步排出，晶粒进一步长大。采用La2O3和MgO复合添加比单独掺入MgO陶瓷样品透过率更高，掺杂效果更好。在烧结温度为1750℃，保温时问为1h条件下，在波艮为300～800nm测试范围内，陶瓷样品的全透过率大于82％，最大值为86％。     

Evolution of Er^3＋ Distribution in the Oxyfluoride Glass Ceramics with Heating

The distribution characteristics of Er3+ ions doped in the oxyfluoride glass ceramics containing LaF3 nanocrystals heat-treated at 650 ℃ for different durations were investigated. The results of the integral absorption cross-section analysis demonstrated that the partition fraction of Er3+ in LaF3 nanocrystals increases with prolonging of heating time. The anomalous phenomena of Er3+ emissions in the up-and the down-conversion fluorescence spectra are well explained based on the calculated results.     

动力学—压电石英晶体传感器测定水中微量汞的研究

基于涂银压电石英晶体对ＣＮ＾－离子的灵敏响应，应用汞对六氰合铁酸钾与邻二氮杂菲反应的动力学催化作用，建立了动力学－ＰＱＣ传感器单面触液测定微量汞的新方法。研究了ＰＱＣ传感器对汞的响应机理，响应曲线，实验条件及共存离子干扰情况。     

Characterisation of raw materials for production of ceramics

The aim of this paper is to characterize some raw materials used for ceramics material production. Five samples of clay have been analyzed. It has been carried out a patterned sampling in a quarry in Rosarno (South Italy). Chemical-physical properties on clay samples are determined. Test pieces have been prepared and physical properties after firing are determined by DSC thermal analysis, XRD analysis and X-ray fluorescence. It is important to note the high amount of Fe₂O₃. The mixture principally contains quartz, illite and oligoclase. It has been observed the colour and the shape after firing: predominant colour is red. In this case the clay has been used in mixtures covered with glazes. The colour of internal clay is hidden by opaque of glazes. The analysed raw materials can be used in a slip for single fired red tiles. The A2sp clay produces best ceramics at 1000°C.     

单相Ba2Ti9O20柠檬酸凝胶法制备、表征及介电性能

采用柠檬酸凝胶法两步热处理工艺制备了单相Ba₂Ti₉O₂₀。干凝胶在750 ℃热处理得到了物相为BaTi₅O₁₁和Ba₄Ti₁₃O₃₀、尺寸为30～50 nm的前驱体粉体。纳米前驱体具有高表面活性，促使单相Ba₂Ti₉O₂₀在1 200 ℃热处理温度下形成。两步热处理所得的粉体比一步热处理所得的粉体具有更好的烧结和介电特性，两步热处理所得的粉体，在1 250 ℃烧结4 h，可获得理论密度为97%的Ba₂Ti₉O₂₀微波介质陶瓷，其介电性能：ε_r=38.5，Qf=19 320 GHz，τ_f=8.7×10^-6 ℃^-1。     

利用压电频移法测定水中的痕量亚硝酸盐

提出了利用压电频移法测定亚硝酸盐的方法。方法以碘离子与亚硝酸根之间的氧化还原反应为依据，通过测定由反应生成的碘所引起的压电晶体频率的变化，在被萃取水相中亚硝酸盐浓度为０．００９￣２．３ｍｇ／Ｌ范围内，频移值与浓度成正比：ΔＦ＝５．８＋２．５×１０＾３Ｃ（ｍｇ／Ｌ），ｒ＝０．９９０１。方法简便，用于天然水中亚硝酸盐的测定，结果令人满意。     

LaxBa1—xCoO3系导电陶瓷导电性研究

对ＬａｘＢａ１－ｘＣｏＯ导电陶瓷的导电性及其导电机制进行了研究，在ｘ＝０．５ｍｏｌ处，导电陶瓷具有金属态导是性，在Ｌａ０．５Ｂａ０．５ＣｏＯ３陶瓷中，存在着氧缺位和导电电子，并且此种导电陶瓷具有较高的电子和氧离子混合导电特性。     

新型陶瓷材料的光激励发光性质研究

针对以往电子俘获光存储材料存在的问题，利用高温固相反应发制备了一种Eu^2 掺杂的氟氧化物玻璃陶瓷，研究表明在该材料中具有光激励发光(PSL)特性，并可用于电子俘获光存储。XRD分析表明该材料含有大量的BaF2微晶。根据其与BaF2相似的发光特性，推断玻璃陶瓷的PSL有可能来源于微晶中Eu^2 的5d-4f发射。但是决定光激励发光过程中的电子(空穴)陷阱的存在方式、电子迁移途径都有待进一步探讨的问题。与传统的BaFCl：Eu相比，这种材料的光激励发光衰减速度较慢。     

Thermal behaviour of amorphous Li2ZrO3 prepared by sol-gel technique

The results of the investigations of thermal behaviour of Li₂ZrO₃, prepared in the amorphous state by means of sol-gel technique are demonstrated. The thermal treatment was carried out in air under constant heating rate of 5 deg·min^–1 and cooling rate of 2.5 deg·min^–1. The methods of DTA, TG, Emanation Thermal Analysis (ETA) and dilatometry were used, for characterization of the thermal behaviour in dynamic conditions. The X-ray diffraction patterns were used for characterization of the phase changes observed by TA Methods.

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Zusammenfassung Ergebnisse aus Untersuchungen des thermischen Verhaltens von Li₂ZrO₃, hergestellt mittels einer Sol-Gel-Technik im amorphen Zustand werden dargelegt. Die thermische Behandlung wurde in Luft bei einer konstanten Aufheizgeschwindigkeit von 5 Grad·min^–1 und einer Abkühlgeschwindigkeit von 2,5Grad·min^–1 durchgeführt. Zur Beschreibung des thermischen Verhaltens unter dynamischen Verhältnissen wurden DTA, TG, Emanationsthermoanalyse und Dilatometrie angewendet. Zur näheren Charakterisierung der bei TG beobachteten Phasenumwandlungen wurde Röntgendiffraktion verwendet.