What principles are classified by chemical analysis and instrumental analysis? What's the difference between the two methods?
Chemical analysis, based on the chemical reaction of substances, is called chemical analysis. Chemical method of (analysis) is a method that relies on specific chemical reactions and their quantitative relationships to analyze substances. Chemical analysis has a long history, is the basis of analytical chemistry, also known as the classic analysis method, mainly including gravimetric method and titration method, and sample processing and separation, enrichment, masking and other chemical means. In many fields of production and life, chemical analysis plays an important role as a routine method of analysis. Titration method is simple, fast and has great use value.
That is to say, instrumental analysis utilizes the basic principles of various disciplines, and uses the advanced techniques of electricity, optics, precision instrument manufacture, vacuum and computer to ascertain the chemical characteristics of matter. Therefore, instrumental analysis is a highly comprehensive branch of science and technology that embodies interdisciplinary and scientific and technological integration. Such methods usually measure the physical quantities of light, electricity, magnetism, sound, heat and so on. While measuring these physical quantities, they usually use more complicated or special instruments and equipment, which is called "instrumental analysis"". In addition to qualitative and quantitative analysis, instrumental analysis can be used in the analysis of structures, valence states, state analysis, micro and thin-layer analyses, micro and ultra trace analysis, etc., and is the direction of the development of analytical chemistry.
Instrumental analysis (modern analysis or physical analysis): a variety of experimental phenomena occur in the interaction of matter. Instrumental analysis is the use of a variety of characteristics can directly or indirectly characterize substances (such as physical, chemical and physiological properties of the experimental phenomena, etc.) through the probe or sensor, amplifier, analysis of converter can directly feel the change of adults already know about the material composition, content, distribution or structure information analysis method.
