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Atomic Emission Spectroscopy: Instrumentation01:22

Atomic Emission Spectroscopy: Instrumentation

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The instrumentation of atomic emission spectrometry (AES) involves various components, including atomization devices that convert samples into gas-phase atoms and ions. There are two main types of atomization devices: continuous and discrete atomizers.  Continuous atomizers, like plasmas and flames, introduce samples in a constant stream, while discrete atomizers inject individual samples using syringes or autosamplers. The most common discrete atomizer is the electrothermal atomizer.
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Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation01:26

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Inductively coupled plasma (ICP) is the common plasma source used in atomic emission spectroscopy (AES), a technique that detects and analyzes various elements in a sample. This method is often called inductively coupled plasma atomic emission spectroscopy (ICP-AES).
There are three main types of inductively coupled plasma atomic emission spectroscopy  (ICP-AES) instruments: sequential, simultaneous multichannel, and Fourier transform instruments, with the latter being less commonly used....
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Atomic Absorption Spectroscopy: Interference01:25

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Interference leads to systematic error in atomic absorption (AA) measurements by enhancing or diminishing the analytical signal or the background. These interferences can be grouped into three main categories: spectral interference, chemical interference, and physical interference.
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Atomic Emission Spectroscopy: Lab01:29

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AES is a powerful analytical technique, especially effective when used with plasma sources, producing abundant spectra in characteristic emission lines. The Inductively Coupled Plasma (ICP), in particular, yields superior quantitative analytical data due to its high stability, low noise, low background, and minimal interferences under optimal experimental conditions. However, newer air-operated microwave sources are emerging as promising alternatives that could be more cost-effective than...
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Atomic Emission Spectroscopy: Overview01:20

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Atomic emission spectroscopy (AES) is an analytical technique used to determine the elemental composition of a sample by analyzing the light emitted from excited atoms. In AES, atoms in a sample are excited to higher energy levels by thermal energy from high-temperature sources, such as plasma, arcs, or sparks. When these excited atoms return to lower energy states, they emit light at specific wavelengths characteristic of each element. The resulting atomic emission spectrum, which consists of...
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Atomic Emission Spectroscopy: Interference01:30

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In atomic emission spectroscopy (AES), high-temperature atomizers excite a broad range of elements and molecules that generate complex emissions from sources such as oxides, hydroxides, and flame combustion products in the flame or plasma. Several strategies can be employed to minimize spectral interferences caused by overlapping emission lines or bands. These include increasing instrument resolution, choosing alternative emission lines, optimally placing the detector in low-background regions,...
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Improvements to alpha-particle spectrometry techniques.

B Caro Marroyo1, A Martín Sánchez1, M Jurado Vargas1

  • 1Department of Physics, University of Extremadura, E-06006 Badajoz, Spain.

Applied Radiation and Isotopes : Including Data, Instrumentation and Methods for Use in Agriculture, Industry and Medicine
|December 10, 2013
PubMed
Summary
This summary is machine-generated.

New methods enhance alpha-particle spectrometry. Improvements include energy drift corrections, advanced deconvolution software (ALFITeX), and a digitized alpha-gamma coincidence system for better analysis.

Keywords:
Alpha-particle spectrometryAlpha–gamma coincidencesDigitizationDual-parameter multichannel analyzerEnergy driftFitting code

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Area of Science:

  • Nuclear Physics
  • Analytical Chemistry
  • Spectroscopy

Background:

  • Conventional alpha-particle spectrometry faces challenges with energy drift and complex spectra analysis.
  • Existing methods may lack efficiency in deconvoluting overlapping alpha peaks.
  • Alpha-gamma coincidence measurements require robust and digitized systems for accurate data acquisition.

Purpose of the Study:

  • To present recent improvements in alpha-particle spectrometry measurement and analysis techniques.
  • To introduce an efficient deconvolution method for complex alpha spectra.
  • To detail advancements in alpha-gamma coincidence spectroscopy.

Main Methods:

  • Implemented corrections for energy drift in long-duration alpha spectrometry measurements.
  • Developed and applied a new computer code, ALFITeX, for efficient deconvolution of complex alpha spectra.
  • Established an alpha-gamma coincidence system utilizing a dual-parameter multichannel analyzer and digitized its components.

Main Results:

  • Successfully applied energy drift corrections, improving measurement accuracy.
  • ALFITeX demonstrated efficient deconvolution of complex alpha spectra.
  • The digitized alpha-gamma coincidence system enhanced data acquisition capabilities.

Conclusions:

  • The implemented improvements significantly enhance alpha-particle spectrometry.
  • ALFITeX provides an effective solution for complex alpha spectral analysis.
  • Advancements in coincidence systems improve the precision and scope of nuclear measurements.