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Related Concept Videos

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

Inductively Coupled Plasma–Mass Spectrometry (ICP–MS): Overview

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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): Interferences01:20

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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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Advancing Simultaneous Extraction and Sequential Single-Particle ICP-MS Analysis for Metallic Nanoparticle Mixtures

Lei Xu1, Xingmao Ma2, John Yang3

  • 1Linda and Bipin Doshi Department of Chemical and Biochemical Engineering, Missouri University of Science and Technology, Rolla, Missouri 65409, United States.

Journal of Agricultural and Food Chemistry
|May 3, 2024
PubMed
Summary

This study developed a method to extract and analyze multiple engineered nanoparticles (ENPs) in lettuce. The new technique accurately detects coexisting silver, cerium oxide, and copper oxide ENPs in plant tissues.

Keywords:
citratedried lettuce shoot and rootengineered nanoparticles (ENPs)macerozyme R-10 enzymesimultaneous extraction of ENPs, single-particle ICP-MS

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Area of Science:

  • Environmental Science
  • Analytical Chemistry
  • Agricultural Science

Background:

  • Engineered nanoparticles (ENPs) are increasingly used in agriculture.
  • Robust methods are needed to analyze co-occurring ENPs in plants.

Purpose of the Study:

  • To develop a simultaneous extraction and analysis method for multiple ENPs in lettuce.
  • To assess the long-term stability of ENP stock suspensions.
  • To validate the method's performance for ENP detection in plant tissues.

Main Methods:

  • Simultaneous extraction of silver, cerium oxide, and copper oxide ENPs from lettuce using macerozyme R-10.
  • Analysis of ENPs using single-particle inductively coupled plasma-mass spectrometry (ICP-MS).
  • Evaluation of citrate-stabilized ENP stock suspension stability over 5 months.

Main Results:

  • The developed method demonstrated satisfactory accuracy and precision for ENP analysis.
  • Low detection limits for particle concentration and size were achieved.
  • Oven drying of plant tissues did not affect ENP properties, expanding method applicability.

Conclusions:

  • A robust methodology for characterizing and quantifying multiple coexisting ENPs in plants was established.
  • The method is applicable to oven-dried plant tissues, enhancing its practical use.
  • This research provides a timely approach for environmental monitoring of ENPs in agriculture.