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Universal EDXRF Method for Multi-elemental Determinations Using Fused Bead Specimens.

Sangita Dhara1,2, Kaushik Sanyal3,4, Kaushik Sanyal3,4

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Summary
This summary is machine-generated.

This study introduces a universal calibration method for multi-element analysis using Energy Dispersive X-ray Fluorescence (EDXRF) and fusion beads. The technique achieves high precision for accurate elemental determination in various samples.

Keywords:
EDXRFfusion beadsmultielementstrace determinations

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Area of Science:

  • Analytical Chemistry
  • Materials Science

Background:

  • Energy Dispersive X-ray Fluorescence (EDXRF) is a powerful technique for elemental analysis.
  • Accurate quantification in EDXRF often requires matrix-matched calibration standards.
  • Fusion bead sample preparation is a common method for analyzing solid samples.

Purpose of the Study:

  • To develop and validate a universal calibration procedure for multi-element determination using EDXRF.
  • To assess the precision and accuracy of the proposed method for various elements.
  • To demonstrate the applicability of the method using a certified reference material.

Main Methods:

  • Multi-elemental standard solutions were mixed with fusion flux to prepare fusion beads.
  • Elemental X-ray lines were excited using both Germanium (Ge) secondary target and Rhodium (Rh) primary target.
  • Relative sensitivities for different elemental X-ray lines were determined using a single bead and applied for quantification.

Main Results:

  • The method demonstrated good precision with an average of 3% (1 standard deviation).
  • The average deviation from expected values was 6%, indicating good accuracy.
  • Analysis of a standard soil sample from IAEA confirmed the validity of the universal calibration methodology.

Conclusions:

  • A universal calibration procedure for EDXRF multi-element analysis using fusion beads is effective.
  • The developed method offers a precise and accurate approach for elemental quantification.
  • This technique simplifies EDXRF analysis by reducing the need for numerous matrix-matched standards.