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For the separation of which of the following substances, Gas-solid chromatography is being used? Explanation: Gas-solid chromatography is used for the separation of low molecular weight gaseous species. Its application is limited because of semi-permanent retention of the analyte.
Gas chromatography is a term used to describe the group of analytical separation techniques used to analyze volatile substances in the gas phase. In gas chromatography, the components of a sample are dissolved in a solvent and vaporized in order to separate the analytes by distributing the sample between two phases: a stationary phase and a mobile phase. The mobile phase is a chemically inert gas that serves to carry the molecules of the analyte through the heated column. Gas chromatography is one of the sole forms of chromatography that does not utilize the mobile phase for interacting with the analyte. The stationary phase is either a solid adsorbant, termed gas-solid chromatography GSC , or a liquid on an inert support, termed gas-liquid chromatography GLC. In early s, Gas chromatography GC was discovered by Mikhail Semenovich Tsvett as a separation technique to separate compounds. In organic chemistry, liquid-solid column chromatography is often used to separate organic compounds in solution.
Question 1. Question 2. The most commonly used detector is the flame ionize detector. The sample is combusted with the help of fuel gas and oxidant in the detector body. Combustible sample components burn and produce ions and electrons which can conduct electricity through the flame.
Solved examples with detailed answer description, explanation are given and it would be easy to understand. Here you can find objective type Biochemistry Gas Chromatography questions and answers for interview and entrance examination. Multiple choice and true or false type questions are also provided.
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Post a comment. Which of the following is not used for detection in GC? Infrared spectroscopy B. NMR C. Flame ionisation D. Electrical conductivity.
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