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Inductively Coupled Plasma–Mass Spectrometry (ICP–MS): Overview01:19

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In inductively coupled plasma–mass spectrometry (ICP–MS), an inductively coupled plasma (ICP) torch is used as an atomizer and ionizer. Solid samples are dissolved and volatilized before being introduced into the high-temperature argon plasma, while solution samples are nebulized and passed through the high-temperature argon plasma. Plasma dissociates the analytes and ionizes their component atoms to form a mixture of positive ions and molecular species. The positive ions are then...
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Inductively coupled plasma–mass spectrometry (ICP–MS) is a highly selective and sensitive technique for accurate elemental analysis. Though the analysis of ICP–MS mass spectra is comparatively straightforward, it is affected by spectroscopic and non-spectroscopic interferences. Spectroscopic interferences arise when the plasma contains ionic species with an m/z value the same as the analyte ion. Spectroscopic interference can be categorized as isobaric, polyatomic ions, and...
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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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Inductively coupled plasma (ICP) is the most widely used plasma source in atomic emission spectroscopy (AES), also known as Inductively Coupled Plasma Optical Emission Spectroscopy (ICP-OES). The ICP source, or torch, consists of three concentric quartz tubes with argon gas flowing through them. A spark from a Tesla coil initiates the ionization of argon, generating a high-temperature plasma.
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Quantitative analysis of powder samples using screen-printing techniques as sample preparation methods for LA-ICP-MS.

Masahiro Kobayashi1, Hiromasa Namiki2, Hideo Hayashi2

  • 1Tokyo Metropolitan Industrial Technology Research Institute, 2-4-10 Aomi, Koto-ku, Tokyo, 135-0064, Japan. kobayashi.masahiro@iri-tokyo.jp.

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PubMed
Summary

This study introduces a novel screen-printing method for preparing homogeneous samples for laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS). This technique enables accurate quantitative analysis without requiring matrix-matched standards.

Keywords:
ICP-MSInductively coupled plasma mass spectrometryLALaser ablationScreen printing

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Area of Science:

  • Analytical Chemistry
  • Materials Science

Background:

  • Laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) is a direct solid sample analysis technique.
  • Quantitative LA-ICP-MS is hindered by the need for matrix-matched standards.

Purpose of the Study:

  • To develop a versatile sample preparation method for quantitative LA-ICP-MS.
  • To overcome the limitation of matrix-matched standards in LA-ICP-MS analysis.

Main Methods:

  • A novel screen-printing technique was developed to prepare film-like samples from powder.
  • Sample powders are dispersed in liquid resin, spiked with internal standards, and homogenized.
  • Internal standardization is achieved by controlling analyte concentration against an internal standard.

Main Results:

  • Homogeneous samples were easily obtained due to the liquid nature of reagents.
  • Accurate quantitative analysis was achieved without relying on matrix-matched standards.
  • The method was validated by analyzing impurity elements in TiO2 powder.

Conclusions:

  • The developed screen-printing method offers a flexible and versatile approach for quantitative LA-ICP-MS.
  • This technique significantly broadens the applicability of LA-ICP-MS by eliminating the need for specific matrix-matched standards.
  • Potential for analyzing diverse materials using this innovative sample preparation technique.