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关键词： 实验室信息管理系统   科研人员   助手   信息化管理   计算机技术   生产技术   仪器分析   检验技术  

摘要： 随着科研和生产技术的不断发展，检验技术也从手工分析发展到仪器分析，检验项目大量增据的准确性和报出时间的要求越来越严格，量急速增加。在这种情况下，原来的人工管显得不太适应，结合计算机技术完成数据的析和处理的信息化管理手段应运而生。实验加，对数数据处理理模式已收集、

ISBN: (纸本)9787301131176

关键词： Students   Pedagogy   college student   Teaching   Instrumental analyses   Educational objectives   Curriculum   Group Meetings  

摘要： Method development and assessment, central components of carrying out chemical research, require problem-solving skills. This article describes a pedagogical approach for teaching these skills through the adaptation of published experiments and application of group-meeting style discussions to the curriculum of an undergraduate instrumental analysis course. The main assumption is that in order for undergraduate students to adopt and adapt published experiments, they must comprehend the literature. Pre-lab and post-lab group meetings are used to enhance this comprehension, communication skills, and group interaction. Evidence that the learning objectives are met during the course includes: an increase in student discussion concerning experimental design prior to bench work; greater student confidence at the start of experiments; and improvement of laboratory report content. Evidence that students believe the format is beneficial has been obtained from surveys and course evaluations.

关键词： Chemistry laboratory   Technology   LIGHT REFLECTION   Chemical speciation   FILM PROPERTY   Advanced materials   Intercalation   Nanoparticles   Physical chemistry   Nanotechnologies   solid state diffusion   Instrumental analyses   Atomic Force Microscopy   Material properties   Chronoamperometry  

摘要： This experiment teaches students the methodology of investigating novel properties of materials using new instrumental techniques: atomic force microscopy (AFM), electrochemical quartz crystal nanobalance (EQCN), voltammetric techniques (linear potential scan and chronoamperometry), and light reflectance measurements. The unique capabilities of each of these techniques are utilized in a combined effort to control and monitor synthesis of electrochromic nanostructured films and then to investigate and analyze film properties. The experiments are designed to demonstrate the penetration of chemical species into solids and its practical implications. It is shown that the intercalation of ions into solid materials through solid-state diffusion is sufficiently fast, even at room temperature, that it can be recorded in real-time by nanogravimetry (EQCN), voltammetric methods, and light reflectance. The high performance of electrochromic films is achieved owing to the formation of nanostructured WO3 with nanoparticles of 20–30 nm in size. The diameter of nanoparticles can be controlled by changing deposition potential and is examined by tapping-mode AFM imaging. The subject of the experiment is of high practical importance for studies of properties of new materials discovered recently in various fields of nanotechnology. The interests in electrochromic materials stem from applications in digital displays and smart windows. At present, in many laboratories in the world, extensive research studies are under way to develop new materials for such applications. The proposed experiment introduces a new concept of intercalation and also shows how to control nanoparticle deposition and how to measure nanomolar quantities of H+ ions inserted in WO3 nanoparticles. In addition, students learn modern instrumental techniques.

ISBN: (纸本)9787122023421

ISBN: (纸本)9787040239256

关键词： 仪器分析-高等学校-教材  

关键词： 大湟江口   泥沙测验   仪器分析   方案方法  

摘要： 泥沙测验是水文测验工作中的一项重要工作,泥沙资料是水文资料的重要组成部分。本文根据大湟江口(二)站的特殊情况,从泥沙测验的测验方法和常用仪器的优缺点等进行分析,探讨该站泥沙测验方案,并建议使用新仪器进行泥沙测验,以提高测验科技水平,保证泥沙测验的合理性和准确性,提高泥沙测验的工作效率。

关键词： 多媒体   教学手段   仪器分析教学  

摘要： 传统的仪器分析化学的教学要采取多媒体的教学方式,可充分发挥学生的主体作用,提高教学效率和教学效果。本文结合教学实际深入探讨了多媒体技术在仪器分析教学中的重要作用。

关键词： 食品安全   科学仪器   展望  

摘要： 食品安全科技的进步越来越依靠科学仪器的发展;食品安全也正成为科学仪器发展的强大动力。本文论述了食品残留检测的进展,介绍了应用于食品安全的超痕量分析技术、复杂基质净化技术、全未知样品的系统分析技术、取制样技术等;并指出了用于食品安全的仪器在自动化、微型化、多功能化、模块化、智能化、现场性、便携性等方面的发展方向。