理化试验室的分析质量评价

化学计量是理化试验室分析质量保证的基础,没有化学计量,也就没有分析质量保证。本文从五个方面对理化试验室的分析质量评价工作进行了论述。     

理化试验室的标准物质应用现状及展望

介绍了理化试验室标准物质的应用现状 ,强调了标准物质用于理化试验室分析质量保证的重要性 ,并展望了其未来的使用与管理情况     

理化试验室的标准物质应用现状及展望

介绍了理化试验室标准物质的应用现状，强调了标准物质用于理论化试验室分析质量保证的重要性，并展望了其未来的使用与管理情况。     

“2015全国化学分析计量技术研讨会”征文通知

<正>有关单位:为了展示我国化学分析测试、化学计量专业领域学术及技术最新发展成果,加强信息交流,促进我国各行业技术进步和经济繁荣,中国仪器仪表学会分析仪器分会、国防科技工业应用化学一级计量站、兵器工业非金属材料理化检测中心拟于2015年7月下旬在山东省青岛市联合举办"2015全国化学分析计量技术研讨会",届时将邀请标准物质研制、实验室认可、化学分析测试、分析仪器与计量器具研发制造等方面的专家学者进行大会报告,同时还     

2015全国化学分析计量技术研讨会于青岛召开

<正>2015年8月26–28日,"2015全国化学分析计量技术研讨会"在山东青岛市召开。本次会议由中国仪器仪表学会分析仪器分会、国防科技工业应用化学一级计量站、兵器工业非金属材料理化检测中心联合主办,《化学分析计量》杂志社承办。中国仪器仪表学会分析仪器分会理事长关亚风出     

2003年全国实验室管理科学研讨会会议通知(第二轮)

由中国分析测试协会、中国仪器仪表学会(分析仪器学会)、中国有色金属学会(理化检验分会)与北京有色金属研究总院联合主办、《分析试验室》编辑部承办的“2003年全国实验室管理科学研讨会”筹备工作进展顺利,目前已收到部分论文,经主办单位     

庆祝《分析试验室》创刊30周年暨分析测试技术学术交流会

为庆祝《分析试验室》创刊30周年,回报长期以来关心、支持《分析试验室》杂志的广大分析测试工作者,发挥《分析试验室》期刊作为专业媒体的作用,拓宽和强化学术交流平台,促进分析测试工作的交流与发展,北京有色金属研究总院、中国分析测试协会联合《分析试验室》期刊,定于2012年联合举办"分析测试技术学术交流会"。     

国防科技工业应用化学一级计量站全国化工标准物质委员会标准物质研究开发中心

<正>国防科技工业应用化学一级计量站(原国防科工委化学计量一级站)是1986年建于中国兵器工业第五三研究所的专业计量技术机构,同时也是兵器非金属材料理化检测中心、国家进出口商品非金属材料认可实验室、国防计量2501校准实验室、全国化工标准物质委员会标准物质研究开发中心。目前,专门从事化学计量的人员196人。其中研究员人、高级工程师32人。拥有各种分析测试仪器150余台,建有国防计量最高标准30余项。主要承担国防科工委化学计量乖研任务;国防系统化学量值传递,计量标准的考核、复查、人员培训;国防大型试验基地现场计量保证;标准物质的研制、定值、发放;进出口非金属材料检验:化学产品测试及未知样品的剖析等。先后完成计量科研课题40余项,有20余项达到巨     

国防科技工业应用化学一级计量站 全国化工标准物质委员会标准物质研究开发中心

<正>国防科技工业应用化学一级计量站(原国防科工委化学计量一级站)是1986年建于中国兵器工业第五三研究所的专业计量技术机构,同时也是兵器非金属材料理化检测中心、国家进出口商品非金属材料认可实验室、国防计量2501校准实验室、全国化工标准物质委员会标准物质研究开发中心。目前,专门从事化学计量的人员196人,其中研究员15人、高级工程师32人。拥有各种分析测试仪器150余台,建有国防计量最高标准30余项。主要承担国防科工委化学计量科研任务;国防系统化学量值传递,计量标准的考核、复查、人员培训;国防大型试验基地现场计量保证;标准物质的研制、定值、发放;进出口非金属材料检验;化学产品测试及未知样品的剖析等。先后完成计量科研课题40余项,有20余项达到国     

庆祝《分析试验室》创刊30周年暨分析测试技术学术交流会

为庆祝《分析试验室》创刊30周年,回报长期以来关心、支持《分析试验室》杂志的广大分析测试工作者,发挥《分析试验室》期刊作为专业媒体的作用,拓宽和强化学术交流平台,促进分析测试工作的交流与发展,北京有色金属研究总院、中国分析测试协会联合《分析试验室》期刊,定于2012年联合举办"分析测试技术学术交流会"。     

Simultaneous liquid chromatographic determination of 39 polycyclic aromatic hydrocarbons in indoor and outdoor air and application to a survey on indoor air pollution in Fuji, Japan

An analytical method was established for the simultaneous determination of 39 polycyclic aromatic hydrocarbons (PAHs) in air. The method was applied to a survey of gaseous and particulate PAHs in household indoor air. The survey was performed in 21 houses in the summer of 1999 and in 20 houses in the winter of 1999-2000 in Fuji, Japan. Thirty-eight PAHs were determined in indoor and outdoor air in the summer, and 39 PAHs were determined in indoor and outdoor air in the winter. The concentrations of gaseous PAHs in indoor air tended to be higher than those in outdoor air in the summer and winter. The concentrations of particulate PAHs in indoor air were the same as or lower than those in outdoor air in the summer and winter. PAH profiles, correlations between PAH concentrations, and multiple regression analysis were used to determine the factors affecting the indoor PAH concentrations. These results showed that gaseous PAHs in indoor air were primarily from indoor emission sources, especially during the summer, and that indoor particulate PAH concentrations were significantly influenced by outdoor air pollution.     

A study of the postnatal change in trace element levels in rat tissues by thermal neutron activation analysis

In order to obtain information about postnatal changes in trace element levels in rat tissues, the age-dependent variations in the concentrations of 6 elements (Fe, Zn, Co, Se, Rb and Cs) were investigated by thermal neutron activation analysis. Several variation patterns were revealed in their concentrations as a function of postnatal age, depending on the combination of an element and an organ: (1) A steady state without significant variations (Zn and Se in brain, Rb and Cs in liver), (2) accumulation till a steady level is attained in time (Se in liver and kidney, Co in kidney), (3) depletion till a steady level is attained in time (Fe and Co in brain, Zn in liver and kidney, Rb and Cs in kidney), (4) permanent depletion (Rb and Cs in brain), and 95) initial drop followed by gradual increase in concentration levels (Fe in liver and kidney, Co in liver)     

化学体系随机共振现象的理论研究

化学体系中随机共振现象的特性、机理、本质和应用的研究是非常重要的前沿课题。综述中国科学技术大学非线性化学实验室,在化学体系随机共振现象的理论研究中,所取得的主要成果,并阐述化学体系随机共振现象研究中所提出来的若干重要问题：非均相化学体系中随机共振;化学体系中内信号随机共振;化学体系中多重随机共振;化学体系中随机共振的调制;化学体系中色噪声作用下的随机共振;化学体系中时空随机共振;耦合化学体系中随机共振;化学体系中双参量随机共振。     

Vibronic interactions and possible electron pairing in the photoinduced excited electronic States in molecular systems: a theoretical study

Electron-phonon interactions in the photoinduced excited electronic states in molecular systems such as phenanthrene-edge-type hydrocarbons are discussed and compared with those in the monoanions and cations. The complete phase patterns difference between the highest occupied molecular orbitals (HOMO) and the lowest unoccupied molecular orbitals (LUMO) (the atomic orbitals between two neighboring carbon atoms combined in phase (out of phase) in the HOMO are combined out of phase (in phase) in the LUMO) are the main reason that the C-C stretching modes around 1500 cm(-1) afford much larger electron-phonon coupling constants in the excited electronic states than in the charged electronic states. The frequencies of the vibrational modes that play an essential role in the electron-phonon interactions for the excited electronic states are similar to those for the monoanions and cations in phenanthrene-edge-type hydrocarbons. Possible electron pairing and Bose-Einstein condensation in the photoinduced excited electronic states as well as those in the monoanions and cations in molecular systems such as phenanthrene-edge-type hydrocarbons are also discussed.     

Weak-to-strong confinement transition of semi-flexible macromolecules in slit and in channel

We compare confinement of stiff macromolecule in channel and in slit. Whereas in the channel a distinct and established transition exists, we elucidate here an ongoing controversy reported from previous experiment and simulation on existence of such transition in the slit. Our extensive molecular simulations in both geometries show only a very weak conformational crossover between moderate and strong confinements in slit in the same range of confinements where the distinct transition in channel is observed. In contrast to situation in channels relatively stable hairpin-like structures are not indicated around this weak transition in the slit. Observed difference from the prediction on behavior in blob regime under moderate confinement is explained by a crossover between dimensionalities in the slit and the extent of ideal conformation statistics to which the stiffer chains are prone. The strong confinement regime of stiff chain in slit characterized here has not been interpreted yet and it differs from the respective saturation-like Odijk regime in the channel.     

微波制样的应用

介绍了微波制样在分析化学中的应用，包括微波试样消解，微波加热水样测定CODcr，微波加热水解蛋白质测定各种氨基酸，以及微波萃取等。特别是对微波试样消解在应用中的一些问题，作了较详细的叙述。     

The heat of dissolution of uranyl nitrate in aqueous nitrate solutions

Conclusions A model has been suggested to explain the observed relationship between the measured heats of dissolution of uranyl nitrate in aqueous nitrate solutions and the concentration of the salting-out agent. The model describes the change in the structure of water in the solution with change in its concentration. On the one hand, a destruction of the water structure by ions occurs, which is weakened with increase in the distance from the ion, and leads to such irregularity in the distribution of water molecules in the solution that the mean number of molecules of water in unit volume is increased with increase in the distance from the ions. In experiments on the heat of dissolution this increase leads to increased hydration of the uranyl cation and reduction in the endothermicity of the dissolution with increase in the concentration of the solution. On the other hand, an interaction occurs between the ions of the salting-out agent and the water molecules in the solution, leading to the opposite result: There is an increase in the mean number of water molecules of the solution in unit volume in the direction of these ions. In experiments on the heat of dissolution this is revealed in the dehydration of the uranyl cation, and correspondingly in an increase in the endothermicity of the dissolution with increase in the concentration of the solution. The proposed model is in harmony with data on vapor pressure above the solutions (the relationship between the activity coefficient of the water and the concentration of the solution).Translated from Zhurnal Strukturnoi Khimii. Vol. 3, No. 2, pp. 143–150, March–April. 1962     

γ-irradiation of polypropylene in vacuum and in air

Polypropylene films were irradiated with ⁶⁰Co γ-rays in vacuum or in air and stored in air. Just after irradiation, the concentration of carbonyl group of the sample irradiated in air only increased with dose. The concentrations of both samples increased with storage time. The more the absorbed doses, the higher the increasing rates. The increasing rate of the concentration of carbonyl group during irradiation in air was higher than those during storage in air. Just after irradiation, the tensile strengths and the elongations of the both samples somewhat increased with dose at the doses less than 5 Mrad, but decreased at doses more than 13 Mrad. The tensile strength and the elongation of the sample irradiated in air decreased with storage time. Those of the sample irradiated in vacuum also decreased with storage time but the decreasing rates were much smaller than those in the sample irradiated in air. The gel fractions of the samples irradiated in vacuum and annealed in vacuum were somewhat higher than those irradiated in vacuum and not annealed. To elucidate high oxidation rate in the sample irradiated in air during and after irradiation, reaction mechanisms were discussed. To clarify the difference of mechanical properties between the samples irradiated in vacuum and in air, the effect of crosslink was considered, together with the oxidation.     

氨基苯磺酸和氨基萘磺酸在反相离子对色谱和离子色谱中分离行为的比较

本文考察了氨基苯磺酸和氨基萘磺酸染料中间体在反相离子对色谱和离子色谱中的分离行为，结果表明一些异构体在反相色谱中的保留顺序与离子色谱中的顺序发生颠倒。静电作用力在离子色谱中对保留值的贡献比在反相离子对色谱中对保留值的贡献要大，而疏水作用力在反相离子对色谱中对保留值的贡献却较在离子色谱中对保留值的贡献要大。离子对色谱更有利于有机离子的分离分析。     

CLIMATIC CHANGE SINCE LITTLE ICE AGE RECORDED BY DUNDE ICE CAP

The climatic change since the Little Ice Age recorded in the Dunde Ice Cap is presentedin this paper. There have been three cold periods and three warm periods since 1400AD.Among them, the coldest one was in the 17th century. Many evidences verified the three coldand warm variations recorded in the Dundc Ice Cap. But it was found from the comparison between the Dunde Icc Cap climatic record and thewinter temperature record in Shanghai that there was a temporal dfference in climatic changebetween East China and West China. The general trend is that the cooling and warmingprocesses in West China were earlier than that in East China. In the Dunde Ice Cap, it isnow in an anomalous warm period, while it is not as warm as in Dunde Ice Cap recordaccording to the winter temperature in Shanghai. In addition to the possible cause of temporaldifference in climatic change between West China and East China, another possible cause isthat the greenhouse effect of CO_2 may already be recognizable in the Dunde Ice Cap a