Cu(Ⅱ)-3,5-diCl-DMPAP-OP显色反应及其应用

研究了在非离子表面活性剂ＯＰ存在下,２－（３,５－二氯－２－吡啶偶氮）－５－二甲氨基苯酚（３,５－ｄｉＣｌ－ＤＭＰＡＰ）与铜（Ⅱ）的显色反应．实验表明,在ｐＨ值为７．５～１０．０的硼砂缓冲介质中,铜与试剂形成１∶２稳定的红色配合物,其表观摩尔吸光系数ε５５８＝９．７×１０４Ｌ·ｍｏｌ－１·ｃｍ－１,铜浓度在０～６．５μｇ／１０ｍＬ范围内符合比尔定律．在柠檬酸三钠和丁二酮肟的存在下,可直接用于铝合金和纯铝中的微量铜的测定     

矩阵分光光度（CPA）法同时测定痕量铜,铋,铁

以金属离子Ｍ,２－（３,５－二溴吡啶偶氮－２）－５－二乙氨基苯酚（３,５－ｄｉＢｒ－ＰＡＤＡＰ）和聚乙二醇辛基苯基醚（ＯＰ）的三元络合物为显色体系,用矩阵分光光度（ＣＰＡ）法研究了共存痕量铜、铁、铁３元素的测定,并对实际铅锭样品中的痕量杂质进行了测定,得到了较满意的结果。     

2-(3,5-二氯-2-吡啶偶氮)-5-二甲氨基苯酚与铑显色反应的研究

研究了２－（３,５－二氯－２－吡啶偶氮）－５－二甲氨基苯酚与铑（Ⅲ）的显色反应．结果表明,在ｐＨ５．０～６．４的乙酸－乙酸钠缓冲介质中,铑与试剂形成稳定的红色配合物,配位比为１∶２,最大吸收波长为５９６ｎｍ,表观摩尔吸光系数为８．７×１０４Ｌ·ｍｏｌ－１·ｃｍ－１．铑（Ⅲ）含量在０μｇ／１０ｍＬ～８．０μｇ／１０ｍＬ范围内服从比尔定律．以ＤＣＴＡ为掩蔽剂,大量的常见金属离子对测定无干扰．所拟分析方法已用于催化剂中微量铑的测定．     

铁(Ⅲ)-9-(3,5-二溴)水杨基荧光酮-溴化十六烷基三甲基铵显色体系的分光光度法研究及应用

研究了铁（Ⅲ）－９－（３,５－二溴）水杨基荧光酮－ＣＴＭＡＢ三元络合物的显色反应条件,在ｐＨ６．０～７．２的ＫＨ２ＰＯ４－ＮａＯＨ缓冲体系中,铁（Ⅲ）与９－（３,５－二溴）水杨基荧光酮形成１∶４的络合物,其最大吸收波长λｍａｘ＝５９０ｎｍ,表观摩尔吸光系数为１．７２×１０５Ｌ·ｍｏｌ－１·ｃｍ－１,铁含量在０～６μｇ／２５ｍＬ范围内符合比耳定律．方法灵敏度高,选择性较好,络合物稳定,用于牛肝粉和茶叶中微量铁的测定,结果满意     

β—环糊糊和表离子表面活性剂对两种显色反应协同作用的研究

比较研究了β－环糊精和阴离子表面活性剂和对Ｃｕ（Ⅱ）－３,５－ｄｉＢｒ－ＰＡＤＡＢ和Ｎｉ（Ⅱ）３,５－ｄｉＢｒ－ＰＡＤＡＢ显色反应的协同作用。     

非对称水溶性卟啉与钯(Ⅱ)显色反应的光度法研究

研究了非对称性５,１０,１５－三（４－甲基－３－磺基苯）－２０－［４－（５－氟尿嘧啶）－３－磺基苯］卟啉（ＭＦｕＳＰＰ）测钯的显色条件．在表面活性剂十二烷基磺酸钠存在下,ｐＨ４．５～６．０的弱酸性ＨＡｃ－ＮａＡｃ缓冲介质中,用抗坏血酸催化,Ｐｄ（Ⅱ）与ＭＦｕＳＰＰ形成１１配合物,最大吸收波长４１５ｎｍ,摩尔吸光系数ε＝１．８×１０５Ｌｍｏｌ－１ｃｍ－１,线性范围０～２．０μｇ／１０ｍＬ．该显色剂保持了对称性卟啉灵敏度高的优点,选择性和反应速度有明显改善．应用于混合样品和钯催化剂样品中钯的测定,结果满意     

3,5—二溴水杨醛缩4—氨基安替比林与铜的荧光猝灭反应？…

研究了新荧光试剂３,５－二溴水杨醛缩４－氨基安替比林（简称：３,５－ＤＢＳＡＡＰ）与铜的荧光猝灭反应体系的最适宜的条件。３,５－ＤＢＳＡＡＰ发射强的荧光,λｅｘ／ｅｎ＝３９３ｎｍ／５１０ｎｍ。在ｐＨ９．０的ＮＨ３－ＮＨ４Ｃｌ缓冲介质中,Ｃｕ（Ⅱ）与３,５－ＤＢＳＡＡＰ在室温反应使其荧光猝灭。据此建立了铜的分析方法,线性范围为１．６×１０＾－５ｍｏｌ／Ｌ￣１．２×１０＾－７ｍｏｌ／Ｌ。用于测定人发中     

9-(3,5-二溴)水杨基荧光酮-铝-CTMAB三元络合物显色反应的研究及应用

研究了９－（３,５－二溴）水杨基荧光酮（简称ＤＢＳＦ）－铝－表面活性剂溴化十六烷基三甲胺（ＣＴＭＡＢ）的显色反应条件和光度性质．在ｐＨ５．１０的六次甲基四胺－ＨＣｌ缓冲介质中,当加入ＣＴＭＡＢ后,Ａｌ（Ⅲ）与试剂形成灵敏度较高的三元胶束配合物,最大吸收峰位于５６０ｎｍ处,表现摩尔吸光系数为１．９４×１０５Ｌ·ｍｏｌ－１·ｃｍ－１,铝（Ⅲ）含量在０～６μｇ／２５ｍｌ范围内符合比耳定律．拟定方法在掩蔽剂存在下,测定了铁黄铜,铸造铜等样品中铝的含量,结果与标准值相符     

水杨醛Schiff碱双核Cu（Ⅱ）配合物合成及磁交换作用

合成了两种新的双核铜配合物〔Ｃｕ２Ｌ３〕ＣｌＯ４·ｎＨ２Ｏ,其中Ｌ为４－（邻羟苯基亚甲基）亚胺－３,５－二甲基－１,２,４－三唑（Ａ）和４－（邻羟苯基亚甲基）亚胺－３,５－二乙基－１,２,４－三唑（Ｂ）,通过元素分析、红外光谱、电子光谱等手段表征,推断配合物具有酚氧桥的结构,Ｃｕ（Ⅱ）离子配位环境为畸变四方构型。配合物（Ａ）的变温磁化率表明铜离子间有反铁磁相互作用,ｇ＝２．０７,２Ｊ＝－１３６．９     

4－（8－氨基喹啉－5－偶氮）－苯磺酸钠的极谱行为研究

研究了４－（８－氨基喹啉－５－偶氮）－苯横酸钠（ＳＡＯＡＢＳ）的极谱行为。在０．０２ｍｌ／ＬＮＨ＿３·Ｈ＿２Ｏ－０．３６ｍｏｌ／ＬＮＨ＿４Ｃｌ的缓冲溶液中，ＳＡＱＡＢＳ产生两个明晰的阴极化极谱波，其二次导数波的峰电位分别为－０．５２Ｖ和－１．３０Ｖ（Ｖｓ．ＳＣＥ）。用ＳＡＱＡＢＳ的第一个波作为定量分析的基础，其线性范围为１．０×１０￣（－６）～８．０×１０￣（－５）ｍｏｌ／Ｌ。氧不干扰ＳＡＱＡＢＳ的测定。还研究了ＳＡＱＡＢＳ的电极过程及反应机理。     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that     

On the Thermodynamic Limit for Responses to Static Electromagnetic Fields

For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the     

Call for Papers

<正>"The Journal of Shanghai Normal University:Mathematics"is published by Shanghai Normal University as regular issues of The Journal of Shanghai Normal University each year from 2014 in English.The editors-in-chief of the issues are professors Yuhao Cong and Maoan Han.The Journal of Shanghai Normal University was started in 1958 with     

Journal of Donghua University ( English Edition) Contents of Volume 31

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