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Lecture Notes for CHEM 434 - Instrumental Analysis at Southern Illinois (SIU)

Notes Information

Material Type:Note 5
Professor:Staff
Class:CHEM 434 - Instrumental Analysis
Subject:Chemistry And Biochemistry
University:Southern Illinois University Carbondale
Term:--
Keywords:
  • Transitions
  • Energy Splitting
  • Complicated
  • Energy Level
  • Multiple Lines
  • Energy Levels
  • Fluorescence
  • Differences
  • Clinical Chemistry
  • Ground State
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Sample Document Text

Lecture #5 Introduction to Atomic Spectrometry Reading: Chapter 8, page 215 - 229. . Atomic energy levels and transition. . Effects on atomic line width. . Sample introduction methods. Types of Atomic Spectrometry . Atomic optical spectrometry (absorption, fluorescence, emission). . Atomic mass spectrometry (Chap. 11). . Atomic X-ray spectrometry (Chap. 12). Chap. 11 and 12 are not covered by lecture, recommended for self-learning. Applications of Atomic Spectrometry . Metallurgy - determine composition of metals . Environmental science - detect heavy and toxic metals (Hg, Pb, Cd, etc.). . Clinical chemistry - e.g. blood test of physiological metals (Na, K, Ca, Mg, Fe) and heavy metal poisoning. Energy level diagrams for atoms with 1 outer electron . Outer shell or valence electrons are promoted to unoccupied atomic orbitals by incident radiation or heat. . Transitions are observed only between certain energy states --- selection rules. . ?E = h? = hc/? . Energy differences ...

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