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关键词： Analysis   Communication   Fears about chemistry   Media   Public image of chemistry  

摘要： The goal of this article is to introduce a different approach to reducing chemophobia. Analysis of the current public image of chemistry, especially the consequences of prevailing chemophobia, can form a basis for changing this negative and dangerous situation for chemistry. Thanks to its unique analytical problem-solving process, analytical chemistry can play an important role in the strategy to reduce chemophobia. The core part of the article describes a newly designed 5E-principle for effective communication. We are convinced that this principle exactly answers the questions that chemistry and chemists have faced in the last few decades in connection with communication with the general public. Three case studies illustrate the application of the proposed 5E-principle for enhancing anti-chemophobic communication of chemists with laymen. [GRAPHICS] .

关键词： 分析化学   高等学校   教学参考资料   无机化学  

ISBN: (数字)9787568044363 ISBN: (纸本)9787568044363

摘要： 本书共有5章。第1章是化学实验基础知识，主要介绍化学实验、化学实验室、化学实验器材和化学试剂等方面的知识。第2章是无机化学实验，介绍了无机化学实验课程和该课程的学习方法。第3章是分析化学实验，每一个实验项目都设计有数据记录与结果处理的相应表格。第4章是无机化学习题。第5章是无机及分析化学习题。

关键词： 电分析化学   重金属   离子选择电极   极谱法  

摘要： 近十几年发展起来的表面?界面电分析化学,使得电分析化学法跻身于高科技领域,同时它还具备设备廉价?操作简便?灵敏度高等特点,适合各个层次中重金属元素的检测,因此它在微量元素检测中必将发挥重大作用?鉴于此,本文就电分析化学法在重金属离子检测中的应用展开探讨,以期为相关工作起到参考作用?

关键词： Analytical techniques   Microplastics   Nanoplastics   Quality control/quality assurance   Quantification   Sampling  

摘要： Microplastics can be present in the environment as manufactured microplastics (known as primary microplastics) or resulting from the continuous weathering of plastic litter, which yields progressively smaller plastic fragments (known as secondary microplastics). Herein, we discuss the numerous issues associated with the analysis of microplastics, and to a less extent of nanoplastics, in environmental samples (water, sediments, and biological tissues), from their sampling and sample handling to their identification and quantification. The analytical quality control and quality assurance associated with the validation of analytical methods and use of reference materials for the quantification of microplastics are also discussed, as well as the current challenges within this field of research and possible routes to overcome such limitations. (C) 2018 Elsevier B.V. All rights reserved.

关键词： dielectric barrier discharge   analytical chemistry   soft ionization   mass spectrometry   optical spectrometry  

摘要： Dielectric barrier discharges (DBDs) are well-established and useful tools for scientific as well as industrial applications. They have been of high interest for analytical applications due to the fact that DBDs can produce small, low temperature/power, and atmospheric plasmas. These kind of plasmas can be applied for the detection and quantification of analytes in several ways: either, DBDs can be used for example as fragmentation and excitation sources to detect elements via optical emission spectrometry (OES), or as ionization sources of molecules for the detection via mass spectrometry (MS). ISAS has developed several of these discharges and studied the impact of the DBD itself on the subsequent application. This work summarizes the development from low pressure DBD implemented in diode laser atomic absorption spectrometry to atmospheric DBDs that can be used for different ambient applications such as the trace detection of arsenic species via OES or the soft ionization of molecular compounds via MS.

关键词： ANALYTICAL chemistry   OSCILLATING chemical reactions   TIME perception  

摘要： Most analytical methods are based on analogue inputs from sensors of light, electric potentials, or currents. The signals obtained by such sensors are processed using certain calibration functions to determine concentrations of the target analytes. The signal readouts are normally done after an optimised and fixed time period, during which an assay mixture is incubated. This minireview covers anotherand somewhat unusualanalytical strategy, which relies on the measurement of time interval between the occurrences of two distinguishable states in the assay reaction. These states manifest themselves via abrupt changes in the properties of the assay mixture (e.g. change of colour, appearance or disappearance of luminescence, change in pH, variations in optical activity or mechanical properties). In some cases, a correlation between the time of appearance/disappearance of a given property and the analyte concentration can be also observed. An example of an assay based on time measurement is an oscillating reaction, in which the period of oscillations is linked to the concentration of the target analyte. A number of chemo-chronometric assays, relying on the existing (bio)transformations or artificially designed reactions, were disclosed in the past few years. They are very attractive from the fundamental point of view butso faronly few of them have be validated and used to address real-world problems. Then, can chemo-chronometric assays become a practical tool for chemical analysis? Is there a need for further development of such assays? We are aiming to answer these questions.

关键词： 高职高专   分析化学   实验教学   改革  

摘要： 化学实验课是实现高职高专医学教育培养目标的主要教学途径之一,其重要性在整个教学过程中贯穿始末。对于分析化学实验课教学,以前教师都要详细地给学生讲解实验目的、原理、操作步骤及注意事项等,学生根据教师讲解按部就班进行实验操作,整个实验过程中,学生只注重实验现象和结果的观察,却对实验过程中出现的问题和有误的结果不能分析,养成了学生不动脑不探索的懒惰习惯。长期下去,使部分学生对实验课失去兴趣,这样对医学人才的培养受到一定的影响。

关键词： 化学工程   化工生产   工艺   措施  

摘要： 现如今,化工企业在我国发展迅速,化学工程简称化工,指。其中化工生产工艺作为化学工程的重要环节,其对整体化工生产质量有着重要的影响,其主要包括了从化学原材料处理、化学反应后生产最终化学工程所需的全过程。基于化工生产工艺的重要性,本文将对化学工程中的化工生产工艺进行深入研究,以供广大同行参考。