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关键词： Assay   Biosensor   Color density   Colorimetry   Digital data   Image processing   Image sensor   Optical sensor   Phone   Spectrophotometry  

摘要： Recently, there is an effort to introduce new types of analytical procedures and handheld assays to provide simple and reliable equipment for the field and household analyses. Development of diagnostic tools for self-diagnosis is another challenge in analytical chemistry. Digital cameras are widely available and cheap, hence they could be the sensor platform for construction of analytical and diagnostic methods. In general, good availability of cameras integrated into smartphones can be easily converted into an analytical tool. This review relates to the use of digital camera in analytical chemistry and there are introduced the facts how digital data can be processed and what the limits of digital photography are. Recent papers in this issue and discussion of development in camera based assays is also provided here.

关键词： Analysis   Degradation   Decomposition   History   Medical formulations  

摘要： One of the very attractive applications of analytical chemistry is its utilization to reveal and describe the composition of materials used or manipulated in the past. The findings provide a picture of the technology, social customs, and other interesting information in the context in which the analyzed objects were used. Analysis of historical pharmaceutical relics from museum collections or archaeological excavations is one of the very interesting domains of such analysis. This article reviews papers on analysis of pharmaceutical relics from the prehistoric period up to the twentieth century. The advantages and prospects of techniques used and methodological aspects of the analysis are discussed. It is shown that such analysis demands multifaceted approach and the results must be weighted very carefully.

关键词： analytical chemistry   Prague Czech Republic  

关键词： 现代有机分析化学   研究   应用  

摘要： 在我国科学技术水平的不断提高下,有机化学的内容开始逐渐丰富起来。本文将从几个方面来深入研究和分析现代有机分析化学,其目的是为了促进有机分析化学领域的进一步发展。

关键词： Class-modelling   One-class classification   Discriminant analysis   Food authenticity   Optimisation   Validation  

摘要： Qualitative data modelling is a fundamental branch of pattern recognition, with many applications in analytical chemistry, and embraces two main families: discriminant and class-modelling methods. The first strategy is appropriate when at least two classes are meaningfully defined in the problem under study, while the second strategy is the right choice when the focus is on a single class. For this reason, class-modelling methods are also referred to as one-class classifiers. Although, in the food analytical field, most of the issues would be properly addressed by class-modelling strategies, the use of such techniques is rather limited and, in many cases, discriminant methods are forcedly used for one-class problems, introducing a bias in the outcomes. Key aspects related to the development, optimisation and validation of suitable class models for the characterisation of food products are critically analysed and discussed. (C) 2017 Elsevier B.V. All rights reserved.

关键词： 分析化学   大气颗粒物   应用  

摘要： 随着近些年北京、天津等城市雾霾天气的加重,PM2.5进入了大众的视野,人们也越来越关注大气颗粒物给生活带来的威胁,因此,分析化学作为可以分析研究大气颗粒成分的有效手段,也得到了长足的应用,本文通过对大量文献的阅读,总结了在大气颗粒物分析中分析化学方法的应用。

关键词： 《分析化学》教材   差异  

摘要： 不同版本《分析化学》教材在一些知识点的表述方面,有很大差异,本文列出了以下6项差异:滴定度的表示,判断多元弱酸(碱)能否准确分步滴定的条件,一元弱酸(碱)氢离子(氢氧根离子)浓度的最简式计算条件,两性物质溶液氢离子浓度最简式的计算条件,基本单元的表示,有效数字的运算。