Liquid chromatography is a separation technique widely used in chemistry, biochemistry, biomedicine and other fields.

Liquid chromatography is a separation technique widely used in chemistry, biochemistry, biomedicine and other fields. It separates the components of a mixture by taking advantage of differences in the solubility, affinity, or other chemical properties of the sample in the liquid phase.

The basic principle of liquid chromatography technology is to inject the mixture to be separated into the liquid chromatography column, and by interacting with the stationary phase, the components in the mixture are separated at different speeds in the column. In liquid chromatography, the stationary phase generally uses a filler with a specific affinity or separation ability, such as silica gel, amino, hydrophobic or ion exchange materials. The mobile phase is the solvent that dissolves the sample and drives the separation of the mixture in the column by constantly flowing.

The application of liquid chromatography is very extensive. In the field of chemistry, it can be used to separate and identify organic matter, natural products, drugs, environmental pollutants, etc. In biochemistry, liquid chromatography can be used to separate and detect proteins, nucleic acids, peptides and other biological macromolecules. In the field of biomedicine, liquid chromatography is widely used in the research and development of new drugs, pharmacokinetics, drug residue detection and so on.

The development of liquid chromatography has also brought many derivatization techniques. For example, liquid chromatography (HPLC) is a liquid chromatography technology optimized for mobile phase flow rate, packing particle size and pressure, which has stronger separation ability and faster analysis speed. Ultra-high performance liquid chromatography (UHPLC) is a further improvement based on HPLC, with smaller filler size, shorter column length and better separation effect. In addition, there is liquid chromatography-mass spectrometry (LC-MS), which combines liquid chromatography with mass spectrometry to achieve high sensitivity detection and structural identification of complex samples.

In short, liquid chromatography is a very important and effective separation technology, which is widely used in the fields of chemistry, biochemistry and biomedicine. With the continuous development and improvement of related technologies, liquid chromatography technology will provide us with more accurate, reliable and reliable analytical methods, and provide strong support for scientific research and industrial production.

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