Liquid chromatography-mass spectrometry

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  • Difference Between Absorption And Desorption

    Adsorption is the bond of particles, particles, or atoms from a gas, fluid, broken down and attached strongly to a surface. This procedure makes a film of the adsorbate on the surface of the adsorbent. This methodology varies from absorbtion, in which a liquid (the absorbate) pervades or is absorbed by a porous solid. Adsorption is a surface-based procedure while absorption includes the entire volume of the material. The term sorption envelops both methodologies, while desorption is the converse…

    Words: 1425 - Pages: 6
  • Aspergillus Case Study

    characteristics Mass spectrometry This technique is useful, because it help us to study masses of molecules or fragments, helping us to measure the mass to charge. In general, the mass spectrometer have a ionizer, vacuum pump, ion accelerator, could have magnets or/and electric field for separate ions , an analyzer tube, and an electron multiplier detector (see figure #). Figure #.- Mass spectrometer. There are different mass spectrometers, for example, transmission quadrupole mass…

    Words: 998 - Pages: 4
  • Liquid Chromatography Case Study

    Kate Byrne DT299/4 CHEM 4128 Applied Physical & Analytical Chemistry Assignment Liquid Chromatography High Resolution Mass Spectrometry Hyphenated Techniques The term “hyphenated technique” was introduced by Hirschfeld in 1980. It refers to the combination of a chromatographic separation technique and a spectroscopic detection technique to form a new, more efficent instrument. The technique which will be discussed in this case is LC-MS. The aim of combining both techniques is to purify and…

    Words: 1044 - Pages: 5
  • Essay On Liquid Chromatography

    abuse effect the environment. Ultraperformance Liquid Chromatography- Tandem Mass Spectrophotometry Analysis of Stimulatory Drugs of Abuse in Wastewater and Surface Waters1 Ultraperformance liquid chromatography is the best method for analyzing drugs of abuse in different substances including wastewater. Liquid chromatography reduces analysis time and increases efficiency. The purpose of this research, Ultra Ultraperformance Liquid Chromatography- Tandem Mass Spectrophotometry Analysis of…

    Words: 1473 - Pages: 6
  • Gas Chromatography Research Paper

    Part A Gas Chromatography What is it? Gas chromatography is a variation of chromatography used in analytical chemistry for separating and analysing components that can be vaporised without decomposition ("Gas Chromatography", 2016). This technique involves using a gas as the mobile phase. There are two types of gas chromatography: • Gas-solid chromatography – separates substances on the basis of their different strengths of adsorption on the solid • Gas-liquid chromatography – separates…

    Words: 2119 - Pages: 9
  • Williamson Ether Synthesis Lab Report

    The NMR sample was prepared by dissolving the collected product in chloroform-D (CDCl3) and DCM for mass spec. The 1H NMR spectra of the 2-bromo-4-methnoxy-phenol product reported significant peaks at (in ppm): δ = 3.02 (s, 2H), 3.75 (s, 4H), 6.97 (1H, dd), 6.81 (1H, dd,), 6.78 (1H, d), 5.15 (1H, s) 3.32 (m, 12H), 3.63 (d, 2H), 3.76 (s, 6H), 3.94 (m,…

    Words: 1468 - Pages: 6
  • Tlc Lab Report

    TLC and HPTLC Introductions Thin layer chromatography (TLC) is derived from liquid chromatography where liquid serves as mobile phase and thin layer of substance on a flat late surface serves as stationary phase. The thin layer of materials act as sorbent while the mobile phase known as solvent. Solvent will send the solutes through the sorbent depends on the strength of the mobile phase as it dissolved the solute and send them up the plate against gravity ,and resistance of sorbent…

    Words: 728 - Pages: 3
  • Essay On Mandrax

    What is Mandrax? Mandrax is an industry name of a synthetic barbiturate type drug that is made by combining a variety of chemicals which include Methaqualone, which is its active ingredient and which has sedative hypnotic properties and Diphenhydramine which is an antihistamine and also has sedative properties. Mandrax comes is a tablet form in a variety of colors such as; white, pink, purple, brown and green and is marked with the manufacturers symbol. Methaqualone was first synthesized in…

    Words: 1110 - Pages: 5
  • Fragrances In Ancient Egypt

    Egypt The Egyptian outlook on perfumes could be derived from their lifestyle learned from the records, the objects found in connection to death and afterlife and mummified remains. The ancient Egyptians were concerned with the odours of everyday life and death. Dated to 1550 BCE, the Ebers papyrus gives us a wealth of knowledge on Egyptian medical preparations for ailments, perfumed anointing oils, and incense plants. As we move back through time, as early as the third millennium BCE, it…

    Words: 485 - Pages: 2
  • Gas Chromatography Lab

    this experiment was to take the Gas Chromatography/ Mass Spectrum part of the “Analysis of US bills for cocaine using gas chromatography / mass spectrometry” lab and improve upon the gas chromatographic results. This would be done by finding a way to separate the peaks of cocaine and doxepin. The lab done previously showed the use of two different methods to obtain samples of cocaine and doxepin for spiked dollar bills. The two extraction methods were liquid-liquid extraction and solid phase…

    Words: 1038 - Pages: 5
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