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关键词： 分析化学实验教学   学生创新能力   培养策略  

摘要： 化学是一门科学,其主要目的是研究物质的化学反应,可见实验在化学中的重要地位。分析化学实验课程有利于培养学生的创新能力,提高学生的化学学习水平,为学生今后的发展奠定基础。文章系统地阐述了分析化学实验教学中培养学生创新能力的路径,旨在提高分析化学教学水平,为学生今后的学习奠定基础。

关键词： 分析化学   项目导向   卓越工程师  

摘要： "卓越工程师计划"旨在培养一大批创新能力强的工程技术人才。然而,目前分析化学的传统教学模式缺乏"创新"意识,导致学生学习积极性差,不适合"卓越计划"的培养目标。湖南工程学院作为全国"卓越工程师教育培养计划"首批试点高校之一,有必要对分析化学课程进行有效的教学改革。本文从分析化学课程的地位出发,基于项目导向模式以创新能力培养为核心对本课程的实施方案和过程作了阐述,使其能够适应于本校"卓越工程师"培养的要求。

关键词： GRADING & marking (Students)   CHEMISTRY students   CHEMISTRY education   PORTFOLIO assessment (Education)   SCHOOL reports   CHEMISTRY teachers  

摘要： The article presents findings of a study which explores the importance of grading students according to thier accuracy and precision on various academic and experimental examinations. The study examines the concept of analytical chemical measurement of student's learning on various chemical education and experiments. The study also assess the practices in analytical chemical education.

关键词： Accreditation  

关键词： 化学工程   绿色化工   技术要点  

摘要： 经济的高速发展,加剧了环境的恶化,并对生态环境产生巨大威胁,阻碍了人类社会的前进步伐。而化工行业是现下最严重的污染源,工业生产活动由于所采用的环保技术不强,使得化学工业污染一直都无法全面控制。因此,基于该问题,为降低化学污染,提倡采用绿色化工这一技术,以此来实现持续发展。笔者将依托化学工程工艺,深入探索绿色化工技术,希望能够改善化工生产。

关键词： 化学实验   教学   有效性  

摘要： 新课程的化学是一门以实验为基础的学科,在化学课本中有大量的实验,实验教学是化学教学中不可缺少的重要组成部分。我国著名化学家傅鹰先生曾说过:“化学是实验的科学,只有实验才是最高的法庭”。因此,如何进行有效的实验教学,是非常重要,也是非常必要的事情,这关系到实验的真正教学效果,同时,也是对学生从知识、能力、情感态度体验等方面进行教育的良好机会。然而,在实验的教学中,目前存在的一些与新课程不协调的低效或无效的行为,导致学生对实验的兴趣下降。基于此,本人对实验教学的现状进行了认真的调查与分析,并针对提高化学实验教学有效性的策略方面做了一定的探索与研究。

关键词： Mixtures   Algorithms   Chemometrics   Organic reactions   Theoretical and computational chemistry  

摘要： Multivariate curve resolution (MCR) is a powerful methodology for analyzing chemical data in different application fields such as pharmaceutical analysis, agriculture, food chemistry, environment, and industrial and clinical chemistry. However, MCR results are often complicated by rotational ambiguity, meaning that there is a range of feasible solutions that fulfill the constraints and explain equally well the observed experimental data. Constraints determine the properties of resolved profiles in MCR methods by enforcing different assumptions on data. The applied constraints on chemical data sets should be derived from the physical nature and prior knowledge of the system under study. Therefore, the reliability of the constraints in order to get accurate results is a critical aspect that should be considered by analytical chemists who use MCR methods. Local rank information plays a key role in the curve resolution of multicomponent chemical systems. Applying the local rank constraint can reduce the extent of rotational ambiguity considerably, and in some cases, unique solutions can be achieved. Local rank exploratory methods like Evolving Factor Analysis (EFA) method provide local rank maps in order to obtain the presence pattern of components on the main assumption that the number of components in each window is equal to its rank. It is shown in this work that the local rank is a mathematical concept that may not be in concordance with chemical information. Thus, applying the local rank constraint for restricting the rotational ambiguity in MCR methods can lead to incorrect solutions! This problem is due to "local rank deficiency", which is introduced in this contribution.

关键词： ELECTROSPRAY ionization mass spectrometry   CHEMISTRY education   ANALYTICAL chemistry   CHEMICAL research  

摘要： Relative to many other areas in chemistry, analytical chemistry appears singularly lagging behind in India despite the commendable growth it had shown in the past both in teaching and research. Certain presumptions in policy making and current educational practices are believed to be the crux of the problem.

关键词： 样品预处理   微波溶样   化学样品  

摘要： 样品预处理(sample pretreatment)是指在进行样品分析前将能够影响检测结果的干扰因素进行消除,继而完整的保留被检测成分,并促使待检测成分得到有效的浓缩以最终获得准确可靠的分析结果。样品预处理是否理想将会直接影响测定结果的真实性,所以样品预处理方法的研发成为当前热门议题。文章以微波溶样技术作为研究对象,从其工作原理、特点、在分析化学样品前处理中的应用加以分析,旨在为样品预处理工作提供帮助。