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C30J_2010_Tutorial_3 - CHEM3001(C30J #3 March29,2010 1...

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CHEM 3001 (C30J)  Analytical Atomic Spectrometry Tutorial #3 March 29, 2010 1. Discuss the major factors involved in the decision to choose between  flame   or   electrothermal   atomization   in   AAS.   Include   advantages   and  disadvantages of each approach and important differences between them. 2. Indicate whether the following statements are true or false and explain  your response. a) Diffraction   gratings   are   more   common   than   prisms   in   modern  monochromators b) The primary combustion zone is the best region of a flame from which to  view atomic emission c) A rainbow occurs as a result of diffraction of light from the sun 3. (a) State the Bragg (Diffraction) Equation explaining the meaning of all its  terms and its significance in analytical Atomic Spectrometry. (b)   The   wavelength   information   from   the   monochromator   of   your   ICP  emission spectrometer is known to be inaccurate.  However, the angles 
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