Chromatography is a high-efficiency physical separation technology. When it is used in analytical chemistry with appropriate detection methods, it is called chromatographic analysis.
The earliest application of chromatography is to separate plant pigments. The method is as follows: Put calcium carbonate in a glass tube, and pour petroleum ether containing plant pigments (plant leaf extracts) into the tube. At this time, a mixed band of several colors appeared at the upper end of the glass tube. Then wash with pure petroleum ether. With the addition of petroleum ether, the band moves downwards and gradually separates into several bands of different colors. By continuing to wash, you can pick up the pigments of various colors. Perform identification. Chromatography also got its name.
Gas chromatographs are widely used in the following industries:
One, indoor environment testing industry
Packaging factories, paint factories, building material product quality inspection centers, indoor air inspection companies, construction engineering quality inspection and test stations, environmental inspection stations, etc. require gas chromatographs to analyze air quality and material quality.
2. Tobacco, alcohol and food industry
Tobacco factories, wineries, liquor factories, breweries, brewing companies, food factories, beverage factories, honey factories, etc. need to use gas chromatograph to analyze the content of specified components in different foods.
Three, scientific research and institutions
Product quality supervision and inspection institutes, research institutes, design institutes, technical colleges, university chemistry departments, agricultural quality monitoring centers, termite control institutes, gas companies, organic chemistry institutes, water plants, public security systems, etc. also require gas chromatograph analysis, Testing and research.
4. Petrochemical industry
Pesticide plants, pharmaceutical plants, agrochemical companies, fine chemicals, biochemicals, petrochemicals, liquefier plants, gas plants, gas plants, coal industry, daily chemical, grain and oil companies, etc. use gas chromatograph analysis and detection.
5. Medical and health industry
Forensic identification centers, pharmaceutical factories, hospitals, disease control centers, etc. also need gas chromatographs.
Use of gas chromatograph (chemical analysis instrument):
Environmental protection: analysis, monitoring and research of trace toxicants in polluted places such as atmospheric water sources;
Biochemistry: clinical application, pathological and toxicological research;
Food Fermentation: Analysis and Research of Trace Components in Microbiological Beverage;
Chinese and Western medicines: analysis of raw materials, intermediates and finished products;
Petroleum processing: analysis and control of petrochemical industry, petroleum geology, oil composition and ore control research;
Organic Chemistry: component research and production control in the field of organic synthesis;
Hygiene inspection: analysis and research of labor protection pollution detection;
cutting-edge science: military inspection control and research.