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CHAPTER 2 Fragmentation and Interpretation of Spectra 2.1 ...

1 CHAPTER 2 Fragmentation and Interpretation of Spectra Introduction Before discussing Fragmentation and Interpretation , it is important to understand the many ways mass Spectra are utilized. For the analytical chemist, a mass spectrum is useful for two applications. The first is the relatively simple case when the analyst is looking for a particular compound in a sample and has a reference material to compare Spectra . The second occurs when an analyst observes the presence of an unknown and wishes to identify it. The mass spectrum allows an experienced analyst to identify the compound or at a minimum narrow the possibilities down to a few compounds from the millions of potential chemicals. Then, a reference standard can be more easily selected from this knowledge to confirm the identity of this unknown.

chemistry when there is a small concentration of analyte. The second is identifying compounds that contain few functional groups; a common procedure in industrial synthesis. The third is confirming steps in a complex synthesis of a new product to determine the molecular mass and possible some structural information.

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