Laser Desorption Plates For Use In Analytical Analysis

Laser Desorption Plates For Use In Analytical Analysis

Laser desorption plates are a critical component in analytical analysis, particularly in mass spectrometry. These plates are used to vaporize and ionize molecules from a sample, allowing them to be analyzed by a mass spectrometer. Laser desorption plates work by using a laser to rapidly heat a small area of the sample, causing it to vaporize and release molecules into the surrounding gas phase. These molecules are then ionized by a separate ionization source, allowing them to be analyzed by the mass spectrometer. Laser desorption plates are typically made from a thin metal foil, such as stainless steel or aluminum, that is coated with a layer of a suitable matrix material. The matrix material is chosen based on its ability to absorb the laser energy and transfer it to the sample, as well as its ability to produce ions when ionized by the ionization source. Common matrix materials include organic compounds such as alpha-cyano-4-hydroxycinnamic acid (CHCA) and 2,5-dihydroxybenzoic acid (DHB), as well as inorganic materials such as graphite and gold nanoparticles. One of the key advantages of laser desorption plates is their ability to analyze a wide range of sample types, including biological tissues, polymers, and small molecules. Additionally, laser desorption plates can be used to analyze samples in their native state, without the need for extensive sample preparation. This makes laser desorption plates a valuable tool in many fields, including proteomics, metabolomics, and drug discovery. In conclusion, laser desorption plates are a critical component in analytical analysis, particularly in mass spectrometry. They work by using a laser to rapidly heat a small area of the sample, causing it to vaporize and release molecules into the surrounding gas phase. Laser desorption plates are typically made from a thin metal foil coated with a layer of a suitable matrix material, which is chosen based on its ability to absorb the laser energy and produce ions when ionized by the ionization source. Laser desorption plates are valuable tools in many fields, including proteomics, metabolomics, and drug discovery.

mass spectrometry, matrix material, ionization source, sample preparation, metabolomics

— William Thompson

CITATION : "William Thompson. 'Laser Desorption Plates For Use In Analytical Analysis.' Design+Encyclopedia. https://design-encyclopedia.com/define/laser-desorption-plates-for-use-in-analytical-analysis?E=360704 (Accessed on October 14, 2026)"