敢想、敢说、敢做 以共产主义风格来促进国民经济化学化

全国人民在党的领导下办科学,步入技术革命的新时期。化学工作者和其他科学工作者一样,从多方面跃进到新的前哨岗位。无机化学家及分析化学家日夜地在探索矿物资源的分析和各种元素的分离,胜利地将祖国一些丰产而特殊的资源引向生产应用的道路。有机化学家为解决社会主义建设的需要,合成了多种中国历史上从来未有的化学品种。物理化学家创建化学新技术,与无机化学家、有机化学家协作而作了有价值的供献。举例说吧,希土元素的分析和分离长期地成为无机化学的谜,中国化学工作者已经胜利地将全部希土元素的分析和分离方法基本完成。作为中国无机盐库的西北盐湖羣,度过了千年沉睡,经物理化学分析工作者与其他科学工作者协作拓荒,已经奠定了利用的基础。国产的塑料、人造橡胶、人造纤维、特种涂料已在多方面为经济建设服务,高分子化学工作者都在继续不断地创造新品种。药物化学家为了治疗人民重要疾病,提取了有疗效的植     

引言

<正>2019年是我国设立"全国科技工作者日"的第三年,为配合中国科协和科技部开展"全国科技工作者日"的宣传活动,及时反映我国分析测试工作者对科技创新所做出的突出贡献,展示本刊编委的丰硕成果和科研实力,《分析测试学报》特别策划了"全国科技工作者日专刊"。在本专刊中,有幸邀请到20位编委撰写了相关稿件,聚焦报道了他们最新的研究成果,内容涉及光谱分析、质谱分析、核磁分析、色谱分析和光电化学传感分析等多领域     

第十届全国青年分析测试学术报告会征文通知（第一轮）

为展示我国青年分析工作者在分析测试领域的新成就、新进展,促进我国分析测试技术的发展,充分发挥青年分析工作者的作用,受中国分析测试协会青年学术委员会委托,第十届全国青年分析测试学术报告会将由武汉大学测试中心承办,定于2008年九月在武汉召开。热忱欢迎青年朋友踊跃投稿     

第十届全国青年分析测试学术报告会征文通知（第一轮）

为展示我国青年分析工作者在分析测试领域的新成就、新进展,促进我国分析测试技术的发展,充分发挥青年分析工作者的作用,受中国分析测试协会青年学术委员会委托,第十届全国青年分析测试学术报告会将由武汉大学测试中心承办,定于2008年九月在武汉召开。热忱欢迎青年朋友踊跃投稿     

第十届全国青年分析测试学术报告会征文通知（第一轮）

为展示我国青年分析工作者在分析测试领域的新成就、新进展,促进我国分析测试技术的发展,充分发挥青年分析工作者的作用,受中国分析测试协会青年学术委员会委托,第十届全国青年分析测试学术报告会将由武汉大学测试中心承办,定于2008年九月在武汉召开。热忱欢迎青年朋友踊跃投稿     

第十届全国青年分析测试学术报告会议征文通知

为展示我国青年分析工作者在分析测试领域的新成就、新进展,促进我国分析测试技术的发展,充分发挥青年分析工作者的作用,受中国分析测试协会青年学术委员会委托,第十届全国青年分析测试学术报告会将由武汉大学测试中心承办,定于2008年9月在武汉召开。热忱欢迎青年朋友踊跃投稿并参加会议。现将会议征文要求通知如下：     

编者的话

我国有色金属矿产资源极其丰富。充分发挥我国有色金属资源优势,加速有色金属工业的发展是实现四个现代化的重要任务之一。这将为广大有色金属分析工作者提出大量新的需要解决的分析课题和任务。因此,创办有色金属分析刊物《分析试验室》是有色金属工业生产和科研发展的客观需要,也是广大有色金属分析工作者的共同愿望。在各级领导和有色冶金系统厂矿企业、     

本刊编辑部寄语

本刊创办以来,受到广大分析工作者的热情支持和欢迎,我们在此表示衷心的感谢。为了改进工作、提高刊物质量,把刊物办得符合广大读者的要求,我们衷心期望广大分析工作者的帮助,请你们写信告诉我们,您对我刊的内容到编排、印刷、发行等方面的意见,今后需增添什么内容,开辟那些新栏目,必须克服什么弊病等等。我们虽然不能一一复信,但一定对来信做认真的分析和研究,根据你们提来的宝贵意见,采取措施,在新的一年努力把刊物尽量办得好些。我们愿与广大分析工作者共勉,在新的一年中,为社会主义祖国的四化建设,为我国分析化学的发展多做贡献。新的一年,祝大家工作好,身体好!     

我国物理化学领域2014 年典型研究进展及其对科技工作者的启示

本文介绍了我国物理化学领域在2014年取得的14个典型研究进展, 通过分析这些进展取得的关键因素, 进而阐述了对科技工作者的几点启示.     

《有色金属工业分析丛书》出版消息

《有色金属工业分析丛书》系由《有色金属工业分析丛书》编委会组织工厂、研究院所和大专院校的高级工程师、教授等分析工作者编写,是地质、冶金和化工等部门的广大分析工作者极有价值的参考书。由冶金工业出版社出版发行,新华书店经销。亦可向“北京新街口外大街2号测试所朱子长(邮码100088)”邮购。现已出版两册。     

金电极上L-半胱氨酸短链分子自组装单层的电化学性能和拉曼光谱研究

用循环伏安法分别测定了金电极表面L-半胱氨酸(L-Cys)和十二硫醇自组装单分子层的电化学行为, 实验发现虽然单层结构排列致密, 但并不能有效地阻碍铁氰化钾与电极间异相电子转移过程, 同时观察到十二烷基硫醇自组装层能较好地阻碍电子转移作用. 运用表面增强拉曼散射光谱技术, 以十二烷基硫醇作为缺陷探针, 从分子水平上证实了L-半胱氨酸自组装单层的稳定性和致密性.     

A catechol-terminated self-assembled monolayer at the surface of a gold electrode and its application for the electrocatalytic determination of dopamine

An electroactive self-assembled monolayer was fabricated by covalent attachment of protocatechuic acid at a gold surface and its electrochemical behavior was investigated using cyclic voltammetry. The modification involves a three-step method: (i) preparation of a cysteamine self-assembled monolayer, (ii) activation of the carboxylic groups of protocatechuic acid in solution and (iii) modification of cysteamine self-assembled monolayers by activated protocatechuic acid to functionalize the self-assembled monolayer by catechol-terminated groups. This resulting thin film modified electrode was tested successfully for the electrocatalytic determination of dopamine in aqueous solution.     

界面可控硫醇SAMs纳米金修饰金电极的电化学行为研究

在裸金电极上自组装不同比例的4,4’-二甲基联苯硫醇(MTP)和硫辛酸(TA)混合液,形成自组装膜(MTP+TA/Au SAMs),再修饰纳米金,制得纳米金混合巯基修饰金电极(AuNPs/MTP+TA/Au)。研究了纳米金混合巯基修饰金电极的电化学行为和阻抗行为,结果表明电极表面pH值的改变对电极表面的电子转移有重要影响。对葡萄糖传感器的制备条件、测定条件、抗干扰能力等进行了讨论,结果表明修饰电极的微结构和微环境有必要进一步研究。     

The effect of the surface coverage of the phosphonic acid terminated self-assembled monolayers on the electrochemical behavior of dopamine

The surface coverage of 3-mercaptopropylphosphonic acid (HS-CH₂CH₂CH₂-PO₃H₂, MPPA) self-assembled monolayers (SAMs) on gold surface can be controlled by the dissociation degree of phosphonic acid groups (-PO₃H₂) in the bulk solution and adsorption time of MPPA molecules under the basic condition. Electrochemical measurements show that the low-density MPPA-SAMs modified gold electrode enhances significantly the kinetics of electron transfer of dopamine (DA), and improves the antifouling capability of modified electrode towards DA oxidation. The present results offer crucial information for design and optimization of the electrochemical sensors for DA determination.     

Unusually rapid heterogeneous electron transfer through a saturated bridge 18 bonds in length

Ferrocene modified self-assembled monolayers of a novel saturated norbornylogous bridge, 21.3 A long, demonstrated unusually rapid rates of heterogeneous electron transfer, three orders of magnitude faster than the equivalent length alkanethiol.     

Preparation,Characterization, and Electrochemical Behaviors of Self-Assembled Monolayer on Gold Electrode Surface with Mercapto-Derivatized Cobaltous Porphyrin

Abstract

5-[4-(3-Mercaptopropyloxy)phenyl]-10,15,20-tris (2-chlorphenyl) porphyrin was utilized for fabricating a self-assembled monolayer (SAM) on a gold electrode. Then cobalt(II) was inserted into the the monolayer by refluxing the cobalt(II) solution in which the pre-assembled porphyrin-modified electrode was immersed. The monolayers were characterized by cyclic voltammetry (CV). Oxidation and catalytic mechanisms of dopamine on the modified electrode were also investigated and elucited respectively. Catalytic currents increased linearly with dopamine (DA) concentration in the range of 1.0 × 10^?9 to 2.0 × 10^?3 mol/L with the correlation coefficient of 0.9989. The modified electrode can be help develop a simple, quick, sensitive, and accurate method for the determination of the biomolecules such as dopamine.     

Covalent immobilization of horseradish peroxidase via click chemistry and its direct electrochemistry

A simple and versatile approach for covalent immobilization of redox protein on solid surface via self-assembled technique and click chemistry is reported. The alkynyl-terminated monolayers are obtained by self-assembled technique, then, azido-horseradish peroxidase (azido-HRP) was covalent immobilized onto the formed monolayers by click reaction. The modified process is characterized by reflection absorption infrared spectroscopy (RAIR), surface-enhanced Raman scattering spectroscopy (SERS) and electrochemical methods. All the experimental results suggest that HRP is immobilized onto the electrode surface successfully without denaturation. Furthermore, the immobilized HRP shows electrocatalytic reduction for H₂O₂, and the linear range is from 5.0 to 700 μM. The heterogeneous electron transfer rate constant k_s is 1.11 s⁻¹ and the apparent Michaelis-Menten constant is calculated to be 0.196 mM.     

多巴胺在2-氨基-5-巯基-[1,3,4]三氮唑自组装膜电极上的准可逆行为研究及分析应用

利用新合成的巯基试剂2-氨基-5-巯基-[1，3，4]三氮唑在金电极表面进行了首次自组装，用电化学法和扫描电子显徽镜对自组装膜电极进行了表征。研究了多巴胺在该自组装膜电极上的电化学行为，发现该自组装膜能有效促进多巴胺在电极与溶液之间的电子传递．表现为二电子传递的准可逆行为，电极反应速率常数为0．105cm／s。该自组装膜电极用于多巴胺注射液含量的测定，结果满意。     

Electrochemical studies of blocking properties of solid supported tethered lipid membranes on gold

The insulating properties of self-assembled thiolipid monolayers and tethered lipid bilayers on polycrystalline gold electrodes were studied by means of cyclic voltammetry (CV). These films were formed by two-step self-assembly processes. Electrochemical measurements of the heterogeneous electron transfer rate constant of different redox couples such as potassium ferrocyanide (K(4)[Fe(CN)(6)]) and dopamine (DP) were used to examine the molecular integrity and structural defects and pinholes within the monolayers. We demonstrate by means of cyclic voltammetry that the bilayer lipid membranes tethered to the gold surface are blocking, stable, yet retaining their dynamic properties and can be used as a model of the cell membrane.     

Light-harvesting and photocurrent generation by gold electrodes modified with mixed self-assembled monolayers of boron-dipyrrin and ferrocene-porphyrin-fullerene triad

Three different kinds of mixed self-assembled monolayers have been prepared to mimic photosynthetic energy and electron transfer on a gold surface. Pyrene and boron-dipyrrin were chosen as a light-harvesting model. The mixed self-assembled monolayers of pyrene (or boron-dipyrrin) and porphyrin (energy acceptor model) reveal photoinduced singlet-singlet energy transfer from the pyrene (or boron-dipyrrin) to the porphyrin on the gold surface. The boron-dipyrrin has also been combined with a reaction center model, ferrocene-porphyrin-fullerene triad, to construct integrated artificial photosynthetic assemblies on a gold electrode using mixed monolayers of the respective self-assembled unit. The mixed self-assembled monolayers on the gold electrode have established a cascade of photoinduced energy transfer and multistep electron transfer, leading to the production of photocurrent output with the highest quantum yield (50 +/- 8%, based on the adsorbed photons) ever reported for photocurrent generation at monolayer-modified metal electrodes and across artificial membranes using donor-acceptor linked molecules. The incident photon-to-current efficiency (IPCE) of the photoelectrochemical cell at 510 and 430 nm was determined as 0.6% and 1.6%, respectively. Thus, the present system provides the first example of an artificial photosynthetic system, which not only mimics light-harvesting and charge separation processes in photosynthesis but also acts as an efficient light-to-current converter in molecular devices.