Solid-phase extraction / solid phase extraction (Solid-Phase Extraction, SPE for short) is a widely used and popular sample preparation technology, which uses solid adsorbent to adsorb the target compound in the liquid sample, and the sample The matrix and the interfering compounds are separated, and then eluted with the eluent or desorbed by heating to achieve the purpose of separating and enriching the target compounds.
It is developed on the basis of traditional liquid-liquid extraction based on the principle of similar miscibility of similar effects between substances and combined with the basic knowledge of liquid chromatography and gas chromatography stationary phases that are currently widely used.
A gas grill is a type of outdoor grill that uses propane or natural gas as a fuel source to cook food. It typically has a metal cooking grate, burners, and a hood or lid to trap heat and smoke. Gas grills are popular because they are easy to use and offer precise temperature control, making them ideal for grilling a variety of foods, from burgers and hot dogs to vegetables and seafood. They can also be used year-round, as they do not require charcoal or wood for fuel. Some gas grills also have additional features such as side burners, rotisserie attachments, and built-in thermometers.
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