Transcription of Spectroscopy: Principles, Theory, Techniques and Applications
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Spectroscopy: Principles, Theory, Techniques and Applications
PDF generated using the open source mwlib toolkit. See for more generated at: Sat, 30 May 2009 17:33:36 UTCS pectroscopy: Principles, Theory, Techniques andApplicationsSpectroscopy2 spectroscopy -An IntroductionSpectroscopyAnimation of the dispersion of light as it travels through atriangular prismSpectroscopy was originally thestudy of the interaction betweenradiation and matter as a functionof wavelength ( ). In fact,historically [1], spectroscopyreferred to the use of visible lightdispersed according to itswavelength, by a prism. Laterthe concept was expanded greatlyto comprise any measurement of aquantity as function of eitherwavelength or frequency. Thus italso can refer to a response to analternating field or varyingfrequency ( ). A further extensionof the scope of the definition added energy (E) as a variable, once the very closerelationship E = h for photons was realized (h is the Planck constant).
• → Atomic absorption spectroscopy (often called AA) - This method commonly uses a pre-burner nebulizer (or nebulizing chamber) to create a sample mist and a slot-shaped burner which gives a longer pathlength flame. The temperature of the flame is low enough that the flame itself does not excite sample atoms from their ground state. The
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