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Related Concept Videos

Atomic Emission Spectroscopy: Overview01:20

Atomic Emission Spectroscopy: Overview

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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: 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: Instrumentation01:22

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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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Automated 90Sr Separation and Preconcentration in a Lab-on-Valve System at Ppq Level
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Extraction and quantification system for environmental radioxenon sample analysis.

M Sabzian1, M N Nasrabadi1, M Haji-Hosseini2

  • 1Department of Nuclear Engineering, Faculty of Advanced Sciences & Technologies, University of Isfahan, HezarJerib Street, 81746-73441, Isfahan, Iran.

Journal of Environmental Radioactivity
|December 5, 2017
PubMed
Summary
This summary is machine-generated.

A new setup for xenon adsorption using activated carbon was created. This system accurately extracts and quantifies radioxenon gas with a ±3% uncertainty.

Keywords:
Environmental samplesGas chromatographyGranular activated carbonRadioxenon

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Automated, High-resolution Mobile Collection System for the Nitrogen Isotopic Analysis of NOx
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Area of Science:

  • Environmental Science
  • Analytical Chemistry
  • Chemical Engineering

Background:

  • Radioactive noble gas monitoring is crucial for environmental safety and nuclear event detection.
  • Accurate quantification of radioxenon isotopes requires efficient extraction and sensitive detection methods.
  • Granular activated carbon is a promising adsorbent for noble gases due to its high surface area and affinity.

Purpose of the Study:

  • To develop and evaluate a dynamic adsorption setup for xenon extraction.
  • To investigate xenon adsorption behavior under various experimental conditions.
  • To establish a reliable radioxenon gas quantification method with high accuracy.

Main Methods:

  • Development of a packed column dynamic adsorption system using granular activated carbon.
  • Systematic study of xenon adsorption kinetics and capacity under varied temperatures and flow rates.
  • Evaluation of the developed setup through inter-comparison exercises and standard sample analysis.

Main Results:

  • The granular activated carbon packed column effectively adsorbs xenon.
  • Adsorption behavior was characterized, enabling the design of optimized adsorber columns.
  • The radioxenon extraction and quantification setup demonstrated high performance, achieving ±3% uncertainty.

Conclusions:

  • The developed dynamic adsorption setup is suitable for efficient radioxenon gas extraction.
  • The quantification method meets experimental requirements with a low uncertainty, suitable for environmental monitoring.
  • This technology advances the capability for precise radioxenon detection and analysis.