Trace analysis of gas chromatography
Trace analysis generally refers to the quantitative and qualitative analysis of the components of the mixture or the pure substance in the volume ratio or weight of 10-6 ∽ 10-9. With the continuous development and progress of society, the solutions to the problems of resources, energy, population and environment faced by human beings are closely related to the gas chromatography chromatographic analysis technology. It can also be said that people's daily life is increasingly inseparable from the application of trace analysis. Trace analysis samples come from a wide range of sources; complex compositions; a wide variety; low levels; and varying state properties. Therefore, it is a relatively difficult task for analysis of relatively small amounts and constants, and it is also a requirement for all aspects. Although there are many analytical methods: chromatography, electrochemical, spectroscopy, and mass spectrometry can be used for trace analysis, but gas chromatography has many advantages. The gas chromatograph is cheaper and the requirements for use are not critical, which is conducive to popularization. The chromatographic instrument has high selectivity and large separation efficiency, which is beneficial to the separation and detection of complex multi-component samples. The chromatographic instrument has a small amount of direct injection but high sensitivity and fast analysis speed. It can solve more complicated analytical problems when combined with other instruments. Chromatography is currently the most widely used method in trace analysis. Of course, to complete a task of trace analysis, in addition to first purchasing a good performance equipment, it will also involve sample collection, pre-processing, analytical method establishment, column selection, optimization of analytical conditions, preparation of standard samples, Data processing and other links. Environment Friendly Items, Environment Friendly Products, Eco Friendly Stationery JNY International Trade Co., Ltd , https://www.jny-stationery.com