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Related Concept Videos

Quantitative Analysis of Vacuum Induction Melting by Laser-induced Breakdown Spectroscopy03:49

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Laser-induced breakdown spectroscopy performed on thin organ and tumor tissue successfully detected natural elements and artificially injected gadolinium (Gd), issued from Gd-based nanoparticles. Images of chemical elements reached a resolution of 100 μm and quantitative sub-mM sensitivity. The compatibility of the setup with standard optical microscopy emphasizes its potential to provide multiple images of a same biological...
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A protocol is described wherein CO2 mineralized from organic contaminant (derived from petroleum feedstocks) biodegradation is trapped, quantified, and analyzed for 14C content. A model is developed to determine CO2 capture zone's spatial extent. Spatial and temporal measurements allow integrating contaminant mineralization rates for predicting remediation extent and time.
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Related Experiment Video

Updated: Jan 19, 2026

Quantitative Analysis of Vacuum Induction Melting by Laser-induced Breakdown Spectroscopy
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Laser Spectroscopy for Monitoring of Radiocarbon in Atmospheric Samples.

Guillaume Genoud1, Johannes Lehmuskoski1, Steven Bell2

  • 1VTT Technical Research Centre of Finland Limited , Espoo FI-02044 VTT , Finland.

Analytical Chemistry
|September 11, 2019
PubMed
Summary

A new system enables continuous, on-site monitoring of radiocarbon (14C) emissions from nuclear facilities. This technology uses mid-infrared cavity ring-down spectroscopy for sensitive detection of 14CO2 in gaseous samples.

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Measuring Carbon-based Contaminant Mineralization Using Combined CO2 Flux and Radiocarbon Analyses
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Last Updated: Jan 19, 2026

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Measuring Carbon-based Contaminant Mineralization Using Combined CO2 Flux and Radiocarbon Analyses
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Area of Science:

  • Environmental Science
  • Nuclear Engineering
  • Analytical Chemistry

Background:

  • In-situ monitoring of radiocarbon emissions is difficult due to a lack of sensitive online detection methods.
  • Accurate measurement of radiocarbon is crucial for nuclear facility safety and environmental monitoring.

Purpose of the Study:

  • To develop and demonstrate a complete system for automated, continuous on-site monitoring of gaseous radiocarbon emissions.
  • To establish a method for sensitive and selective detection of radiocarbon in real-world environmental samples.

Main Methods:

  • Integration of mid-infrared cavity ring-down spectroscopy with an advanced gas sampling system.
  • Automated extraction of carbon dioxide (CO2) from atmospheric-like gas matrices for radiocarbon analysis.
  • Conversion of methane-14 (14CH4) to carbon dioxide-14 (14CO2) to discriminate between organic and inorganic radiocarbon forms.

Main Results:

  • Successful detection of elevated radiocarbon levels in an atmospheric-like gas matrix using the developed system.
  • Demonstration of the system's capability to identify radiocarbon as 14CO2 after sample processing.
  • Validation of the method's ability to differentiate between organic and inorganic radiocarbon species.

Conclusions:

  • The developed system provides a viable solution for automated, continuous, on-site monitoring of radiocarbon emissions.
  • This technology advances the capability for real-time environmental surveillance in nuclear facilities.
  • The system holds potential for future applications in in-situ atmospheric radiocarbon monitoring.