绿原酸亲水性磁性分子印迹树脂的合成及其固相萃取性能评价

以绿原酸（CGA）为模板分子、间苯二酚和三聚氰胺为双功能单体、甲醛为交联剂在磁性介孔二氧化硅（Fe₃O₄@mSiO₂）的介孔中一步聚合形成亲水性磁性分子印迹树脂（MMIRs）。除去mSiO₂载体后，MMIRs具有多孔结构且印迹位点位于材料表面。透射电镜、傅里叶变换红外光谱、振动样品磁强计、热重分析和水接触角实验表明：分子印迹聚合物层成功地包覆在Fe₃O₄表面，MMIRs具有良好的亲水性和磁固相萃取性能。MMIRs对CGA具有较强的吸附容量（50.87 mg/g）、较快的吸附速率（吸附平衡时间70 min）和较好的特异性吸附性能。将MMIRs用于杜仲黑茶中CGA的选择性分离，采用高效液相色谱分析检测，检出限为0.7 mg/L，回收率为93.1%~109.4%，相对标准偏差（RSD）小于9.6%。结果表明MMIRs可简单、快速、高选择性地分离富集复杂水体系样品中的CGA。     

吖啶红荧光猝灭法测定痕量亚硝酸根

研究了在稀硫酸介质中亚硝酸根与吖啶红发生的亚硝化反应,建立了测定痕量亚硝酸根的荧光猝灭法。方法的测定范围为0.01～0.70μg·ml-1。方法用于环境水样中痕量亚硝酸根的测定,结果满意。     

高锌试样中痕量锗的吸光光度法测定

建立了高锌试样中痕量锗的快速光度分析方法,显色条件为8×10~(-5)mol·L~(-1)SAF 0.8g·L~(-1)OP 2.4mol·L~(-1)盐酸,λ_(max)为510nm,锗浓度在0.05～5μg/25ml范围内符合比耳定律,摩尔吸光系数为1.3 ×10~5.     

Identification and classification of airborne soot particles using an automated SEM/EDX

Individual particle analysis by means of an automated scanning electron microscope with an energy dispersive X-ray microanalysis system (SEM/EDX) is used for chemical classification and size determination of airborne particulate matter. Special attention is paid to the X-ray analysis of atmospheric soot particles. The preparation and use of standards, which is indispensable for obtaining good results are described and discussed in detail. The aerosol samples were collected on Nuclepore filters of two different pore sizes at a traffic island in Munich.     

硒的分析方法

就近年来国内外硒的分析方法进行了综述，着重介绍了吸光光度法、荧光光度法、原子吸收光谱法、电化学分析法（引用文献37篇）。     

Polymer crystallization dynamics,as reflected by differential scanning calorimetry. Part 1: On the calibration of the apparatus

In this paper a method for the calibration of the heat transfer coefficient between pan and furnace is given. This (second) calibration is necessary in addition to the usual calibration of the temperature scale. Indeed, with increasing cooling rates as required for kinetic measurements, the finite heat flow resistance between pan and furnace becomes evident anyway. We also propose to enlarge this resistance deliberately, in order to separate the time scales of the control system and of the exponential return of the heat flow curve to the base line, as occurring after completion of the phase transition. Only in this way can the heat transfer coefficient be determined with some accuracy. Another advantage of a lowered heat transfer coefficient will be treated in a third paper. It enables an approximate treatment of polymer crystallization kinetics.     

An adiabatic low-temperature calorimeter for heat capacity measurement of small samples

A small sample adiabatic calorimeter for measuring heat capacities in the temperature range 60–350 K using the Nernst method has been constructed. The sample cell of the calorimeter is 6 cm³ in the internal volume, equipped with a miniature platinum thermometer and surrounded by two adiabatic shields. Two sets of 6-junction chromel-copel thermocouples were mounted between the cell and the shields to indicate the temperature differences between them. The adiabatic conditions of the cell were automatically controlled by two sets of temperature controller. A mechanical pump was used to pump out the vapour of liquid nitrogen in the cryostat to solidify N₂ (1), and 60 K or even lower temperature was obtained. The performance of this apparatus was evaluated by heat capacity measurements on α-alumina. The deviations of experimental results from a smoothed curve lie within ±0.2%, while the inaccuracy is within ±0.5% compared with the recommended reference data in the wole temperature range.     

微波消解技术在农业样品分析中的应用

利用光纤压力自控密闭微波消解系统对土壤和植株样品中重金属元素测定的影响进行了研究，确立了样品消解试剂、微波消解每件及样品预处理方法。结果表明，该方法与常压湿法消解相比，具有样品消解时间短、消解试剂用量少、样品污染小等特点，是准确可靠的土壤及植株样品中重金属元素检测样品消解处理方法。     

Characterization of coalitionally ordered games

Summary In the sequel we will derive sufficient and necessary conditions for the existence of certain numeric representations of simple games. In § 2 the above mentioned representation is given by a so called, coalitionally ordered function, i.e. a numeric function representing the desirability of each coalition in the class of all coalitions. Simple games which possess a c.o.f are called coalitionally ordered games. Sufficient and necessary criteria are given for a simple game to be a c.o.g. Analogously weighted majority games are characterized in § 3. The criteria to be presented are linked by properties of the desirability relation of a simple game. The concept of a desirability relation was introduced by Peleg 1978.

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Zusammenfassung Im folgenden werden wir hinreichende und notwendige Bedingungen zur Existenz von gewissen numerischen Darstellungen einfacher Spiele (simple games) herleiten. Diese oben genannte Darstellung wird in § 2 durch eine sogenannte coalitionally ordered function, gegeben, wobei wir darunter eine numerische Funktion verstehen, die die Desirability, jeder Koalition innerhalb der Klasse aller Koalitionen beschreibt. Einfache Spiele, die eine c.o.f besitzen, werden coalitionally ordered games genannt. Es werden hinreichende und notwendige Bedingungen dafür genannt, daß ein einfaches Spiel ein c.o.g ist. Analog werden gewichtete Abstimmungsspiele (weighted majority games) in § 3 charakterisiert. Die angegebenen Kriterien werden mit Eigenschaften der sogenannten desirability relation eines einfachen Spieles in Verbindung gebracht. Das Konzept einer desirability relation wurde von Peleg 1978 verwendet.