Chemistry

Atomic absorption spectrometry

Atomic absorption spectrometry


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  • Tutorial overview
  • 1. Introduction
  • 2 atomic construction
  • 3 basic equations
  • 4 energy terms
  • 5 fine structure
  • 6-hyperfine structure
  • 7 atoms in a magnetic field
  • 8 spectral lines
  • 9-Continuous Spectra
  • 10 atomic absorption spectrometer

Performing simulated measurements

Fig.1
An interactive atomic absorption spectrometer

A virtual atomic absorption spectrometer for making simulated measurements. Details of the process can be called up by clicking the help icon "?".

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Table of contents

  • Structure of the AAS spectrometer
  • Radiation sources
  • Line array
  • Continuum radiator
  • Atomization unit
  • The monochromator
  • detector
  • Background measurement, correction
  • Zeeman underground comp.
  • Background compensation
  • High current pulses
  • Measure next to the line
  • Substances and vessels
  • Simulated measurements

35 min.

Preparation and review

  • Required basics
  • Further learning units

About the learning unit

Authors

  • Dr. Stephan Berry
  • Prof. Dr. Guenter Gauglitz
  • Dr. Joachim Heimberger

Learning unit 10 of 10


The latest online knowledge book 2

[PDF] Download atomic absorption spectrometry for free

The broad use of atomic absorption spectrometry is presented in the fundamentally revised standard work based on numerous areas of application. The description of the different AAS techniques in comparison enables the user to find the best solution for him. Bernhard Welz and Michael Sperling have managed to keep a good balance between theoretical principles and practical applications. The newly added chapter 'Physical Basics' provides the user with a summary of the fundamental aspects of AAS. In contrast to the previous edition, the development of the AAS is dealt with in a separate chapter. In the technical chapters, the reader is presented with the current state of the art without historical ballast. Additional chapters describe instrumental new developments such as automation through flow injection or the use of computers. Methodological advances such as species determination are not neglected either. A detailed subject index ensures quick access to the basics of applications and problem solutions. An extensive bibliography opens up a case of further information.

The Lambert-Beer & rsquosche Law or Bouguer-Lambert-Beer & rsquosche Law describes the attenuation of the intensity of radiation when it passes through a medium with an absorbing substance, depending on the concentration of the absorbing substance and the layer thickness.

Alpha spectrum of the plutonium isotopes 242Pu, 239Pu / 240Pu and 238Pu A line spectrum is a physical spectrum that shows separate (discrete) points of increased intensity, so-called spectral lines.


Photoemission spectroscopy in chemistry and physics

The principles of photoemission spectroscopy and of its application to problems in chemistry and physics are discussed. Examples will be presented for atoms, molecules, solids and surfaces. The following topics will be discussed: binding energies of core levels (rare gases), binding energies of valence levels (CO), analysis of a valence band spectrum in terms of MO-calculations (C6H6), core polarization (O2), chemical shift (O), plasmon excitations (Be-metal), energy dispersion relations for a solid (Cu), exchange splitting in a metal (Ni), surface states (Si), energy levels of adsorbates (Ni on Au, C.6H6 on Ni).

This is a preview of subscription content, access via your institution.


The latest online knowledge book 2

[PDF] Download atomic absorption spectrometry for free

The broad use of atomic absorption spectrometry is presented in the fundamentally revised standard work based on numerous areas of application. The description of the different AAS techniques in comparison enables the user to find out the best solution for him. Bernhard Welz and Michael Sperling have managed to keep a good balance between theoretical principles and practical applications. The newly added chapter 'Physical Basics' provides the user with a summary of the fundamental aspects of AAS. In contrast to the previous edition, the development of the AAS is dealt with in a separate chapter. In the technical chapters, the reader is presented with the current state of the art without historical ballast. Additional chapters describe instrumental new developments such as automation through flow injection or the use of computers. Methodological advances such as species determination are not neglected either. A detailed subject index ensures quick access to the basics of applications and problem solutions. An extensive bibliography opens up a case of further information.

Photoemission spectroscopy in chemistry and physics

The principles of photoemission spectroscopy and of its application to problems in chemistry and physics are discussed. Examples will be presented for atoms, molecules, solids and surfaces. The following topics will be discussed: binding energies of core levels (rare gases), binding energies of valence levels (CO), analysis of a valence band spectrum in terms of MO-calculations (C6H6), core polarization (O2), chemical shift (O), plasmon excitations (Be-metal), energy dispersion relations for a solid (Cu), exchange splitting in a metal (Ni), surface states (Si), energy levels of adsorbates (Ni on Au, C.6H6 on Ni).

This is a preview of subscription content, access via your institution.


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Atomic Absorption Spectrometry - Chemistry and Physics

Biology students in the Bachelor of Arts course must demonstrate knowledge of the subjects chemistry, physics and mathematics to the extent of a basic or advanced course at upper secondary level (NRW). This knowledge can be proven by the Abitur certificate or by participating in suitable courses. It is recommended to use the courses offered in the optional area. Which modules of the optional area can be used to acquire suitable certificates will be announced for each semester (see separate notice). Knowledge of the subjects listed above can also be proven in the form of knowledge tests. If you are interested, please contact the student advisory service (Ms. D & uumlnschede, Ms. Wilms, Ms. Heinzelmann or Ms. Schrey).

The evidence should be submitted by the end of the second semester and must be submitted when registering for the bachelor's examination in biology.

For students studying chemistry, physics, mathematics or geography as a second subject, the following rules apply:

second subject chemistry:
In order to study biology, you only need to prove that you have a knowledge of mathematics. Knowledge of physics is demonstrated through the successfully completed module & ldquoPhysical Chemistry & ldquo.

second subject physics:
To study biology, only knowledge of chemistry has to be proven. Knowledge of mathematics is demonstrated via the successfully completed module "Mathematical Methods in Physics".

second subject mathematics:
To study biology, you only need to demonstrate knowledge of chemistry and physics.

second subject geography:
To study biology, you only need to demonstrate knowledge of chemistry and physics. Knowledge of mathematics is proven via the successfully completed module "Statistics and GIS exercises".


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Atomic Physics by Department of Physics Christopher J Foot (Paperback / softback, 2011)

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Another highlight is that Periodic table of the elements, which offers a list of the most important element properties and images for the individual elements. Furthermore, images of the electron shell, energy level schemes and atomic spectra are displayed here.

One Nuclide map with information on half-life and types of decay for all important isotopes is currently under construction.


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