仪器分析1（英文版）（共3）---iachapter2.ppt

文档介绍：Chapter 2 Atomic Emission Spectroscopy
Chapter 2 Atomic Emission Spectroscopy
. Introduction to Optical Methods
. Fundamentals of AES
. Instrumentation
. Analytical Methods of AES
. Control of Analytical Interferences
. Introduction to Optical Methods
The Nature of Radiant Energy
Spectral Regions
Interaction of Radiation with Atom
Instrumentation
The Nature of Radiant Energy
The Duality of Light:
Wave properties
Reflection
Scattering
V frequency, C velocity of light ,  wavelength, v wave number
()
-
Refraction
Diffraction
Where h is Planck’s constant,
h=×10-34
2. Particular proper ( the Energy of a photon)
()
Spectral Regions
Interaction of Radiation with Atoms
Emission
Atom (high excited state) → Atom (lower excited state) + h
Absorption
Atom (ground state) + h→ Atom (high excited state)
Fluorescence
Atom (ground state) + h→ Atom (high excited state)
 Atom (lower excited state) + hF
Instrumentation
⑴ Light Source
1. The ponents
⑷ Detector
⑶ Polychromator or Monochromator
⑵ Sample cell
2. Atomic spectrometry system
. Fundamentals of AES
. The Energy Level Structure of an Atom