'Base peak' diaporamas de présentation

Unit 1

Unit 1. Mass spectroscopy NMR UV/Vis spectroscopy IR spectroscopy (review). Mass Spectroscopy. Mass Spectroscopy involved the following steps: The vaporization, ionization and fragmentation of a compound. The separation of the cationic fragments based on their mass to charge ratio (m/z).

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Multidimensional chromatography

Multidimensional chromatography. The peak kapacity (z * y) if selectivity is different in the columns. Multidimensional chromatography with heart cut. Only few bandes are cut. Advantages of multidimensional chromatography. Deans switch. The flow of mobile phase does not disturb by cut.

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12. Structure Determination: Mass Spectrometry and Infrared Spectroscopy

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Organic Mass Spectrometry

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The Bottom Up Solution to the Triacylglycerol Lipidome

The Bottom Up Solution to the Triacylglycerol Lipidome. William Craig Byrdwell Florida Atlantic University Dept. of Chemistry & Biochem. Boca Raton, FL 33432. Overview. What is Atmospheric Pressure Chemical Ionization (APCI) mass spectrometry (MS)?

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Instrumental Analysis Techniques

Chromatography TLC (Thin Layer Chromatography) HPLC (High Pressure Liquid Chromatography) GC/GLC (Gas Liquid Chromatography) Spectroscopy and spectrometry UV-Vis (UltraViolet & Visible Spectroscopy) AAS (Atomic Absorption Spectroscopy) IR (InfraRed Spectroscopy)

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Instrumental Analysis Techniques

Chromatography TLC (Thin Layer Chromatography) HPLC (High Pressure Liquid Chromatography) GC/GLC (Gas Liquid Chromatography) Spectroscopy and spectrometry UV-Vis (UltraViolet & Visible Spectroscopy) AAS (Atomic Absorption Spectroscopy) IR (InfraRed Spectroscopy)

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e -

An Introduction to Mass Spectrometry. e -. Carbon. 12 C = 12.000000. Hydrogen. 1 H = 1.007825. Nitrogen. 14 N = 14.003050. Oxygen. 16 O = 15.994914. Masses of Common Isotopes. CO. MW = 27.994914. N 2. MW = 28.006100. CH 2 =CH 2. MW = 28.031300. CO. N 2. CH 2 =CH 2. 27.994914.

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e -

An Introduction to Mass Spectrometry. e -. Carbon. 12 C = 12.000000. Hydrogen. 1 H = 1.007825. Nitrogen. 14 N = 14.003050. Oxygen. 16 O = 15.994914. Masses of Common Isotopes. CO. MW = 27.994914. N 2. MW = 28.006100. CH 2 =CH 2. MW = 28.031300. CO. N 2. CH 2 =CH 2. 27.994914.

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CHEM 344

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Mass Spectrometry

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MASS SPECTROMETRY (MS)

MASS SPECTROMETRY (MS). Mass Spectrometry . MS gives an exact measure of molecular mass. An electron beam (70ev) dislodges an electron from a sample giving M + , a radical cation . A potential difference of ~10000 v accelerates the ions. Radicals are not affected.

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