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Related Concept Videos

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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Mass spectrometry is a powerful characterization technique that can identify and separate a wide variety of compounds ranging from chemical to biological entities, based on their mass-to-charge ratio (m/z). The instruments that allow this detection, known as mass spectrometers, have three components: an ion source, a mass analyzer, and a detector. These spectrometers differ based on the nature of their ion source and analyzers.
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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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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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Matrix-assisted laser desorption ionization (MALDI) is a powerful analytical technique used in mass spectrometry. It enables the identification and characterization of various biomolecules, including proteins, peptides, nucleic acids, and carbohydrates. MALDI spectrometry is widely employed in biological and medical research, as well as in fields like pharmacology and biochemistry.
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Protocol for Microplastics Sampling on the Sea Surface and Sample Analysis
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Trace element distribution in marine microplastics using laser ablation-ICP-MS.

Hind El Hadri1, Julien Gigault2, Sandra Mounicou1

  • 1E2S UPPA, CNRS, IPREM, Université de Pau et des Pays de l'Adour, Pau, France.

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Summary
This summary is machine-generated.

Researchers quantified trace metals sorbed onto microplastics (MPs) from marine environments. This study provides a method to assess MP contamination and exposure time, crucial for understanding environmental risks.

Keywords:
AdditivesLaser ablation-ICP MSMicroplasticsSorptionTrace elements

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Area of Science:

  • Environmental Science
  • Analytical Chemistry
  • Marine Biology

Background:

  • Microplastic (MP) pollution is a significant environmental challenge.
  • MPs can adsorb and transport various contaminants, including trace metals.
  • Accurate quantification and characterization of MP-associated contaminants are crucial for risk assessment.

Purpose of the Study:

  • To analyze trace elements (Fe, Cu, Zn, As, Cd, Sn, Sb, Pb, U) within microplastic subsurface.
  • To develop a method for discriminating between sorbed contaminants and plastic additives.
  • To establish a spatiotemporal correlation for MP exposure assessment.

Main Methods:

  • Microplastics were collected from beaches in Guadeloupe.
  • Trace elements were analyzed using laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS).
  • Qualitative and quantitative approaches were used to analyze metal concentration profiles.

Main Results:

  • Trace elements were successfully quantified in the microplastic subsurface.
  • A strategy was developed to differentiate sorbed metals from additives.
  • Spatiotemporal correlations were proposed to estimate MP exposure time and concentration.

Conclusions:

  • The study presents a novel method for analyzing trace metal contamination on microplastics.
  • This approach allows for better evaluation of microplastic's role in contaminant transport.
  • Findings aid in assessing the environmental exposure and risk associated with microplastics.