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ATOMIC SPECTROMETRY 1. Flames 2. Electrothermal Atomizers 3. Plasmas
X = laser plasmas stellar interior
Combustion zones in the common Bunsen Burner
Combustion zones in a pre-mixed, elongated, laminar flame
Temperature profiles for a natural gas-air flame.
Air-Acetylene Flame Fuel-air ratios
How do we introduce liquid samples into the flame? Direct Insertion… Total Consumption Burner
VERY NOISY!! Total Consumption Burner
Plan B: Use a nebulizer
Concentric nebulizer Crossed-flow nebulizer
V-Groove Babington nebulizer Ball-type Babington nebulizer for viscous samples
Pre-mixed flame system with concentric nebulizer and spray chamber
Perkin-Elmer Burner System
Burner Head Design (Looking down from above) Emission/Fluorescence Absorption
Fraction of analyte present as neutral free gaseous atom in the flame
Background Emission from Flames Oxygen - Hydrogen Oxygen - Acetylene Nitrous oxide - Acetylene
Flame Absorption Profiles vary by element
Signals also vary with sample flow rate
Block Diagram of a Flame Emission Spectrometer
Schematic Diagram of a single-beam atomic absorption spectrometer
The monochromator in an atomic absorption experiment simply isolates the appropriate spectral line from all of the lines emitted by the light source
Atomic Absorption Spectrometers
Continuum Source Background Correction
Representative Flame Detection Limits (ng/mL)
ATOMIC SPECTROMETRY 1. Flames 2. Electrothermal Atomizers 3. Plasmas.
BC ILN Atomic Absorption Spectroscopy (AAS) 1 Thompson Rivers University.
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Atomic spectroscopy It’s a class of spectroscopic method in which the species examined in the spectrometer are in the form of atoms.
1 Atomic Absorption Spectroscopy. 2 Atomic Transitions: Excitation and Emission.
Atomic Emission Spectrometry
AAS and FES (Ch 9, 7th e, WMDS)
1 Introduction to Atomic Spectroscopy Atomic Absorption Spectroscopy Lecture 12.
1.1 Atomic Absorption Spectrometry (AAS) determination of elements not compounds needs radiation source high temperature for atomization Atomization a.
1 A TOMIC SPECTROMETRIC METHODS PART 9. 2 Interferences : Four classes of interferences: 1-Spectral interferences 2-Chemical interferences 3- Refractory.
1 Chapter 8 Atomic Absorption Spectroscopy （ AAS ） Yang Yi College of Science, BUCT.
Ahmad Aqel Ifseisi Assistant Professor of Analytical Chemistry College of Science, Department of Chemistry King Saud University P.O. Box 2455 Riyadh
AA and Atomic Fluorescence Spectroscopy Chapter 9
Ion Sources Some characteristics of ion sources (especially in high precision work): It should have high efficiency in generating ions of the element of.
Atomic Spectroscopy Atomic Spectroscopic Methods Covered in Ch 313: Optical Atomic Spectrometry (Ch 8-10) Atomic X-ray Spectrometry (Ch 12) Atomic Mass.
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Chapter 9 Atomic Absorption and Atomic Fluorescence Spectrometry
Chapter 10 ATOMIC EMISSION SPECTROMETRY
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