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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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Atomic Force Microscopy01:08

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Atomic force microscopy (AFM) is a type of scanning probe microscopy that can analyze topographic details of various specimens like ceramics, glass, polymers, and biological samples. AFM offers over 1000 times more resolution than the optical imaging system. Images generated from AFM are three-dimensional surface profiles, offering an advantage over the flat, two-dimensional images from other imaging techniques.
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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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Inductively Coupled Plasma Atomic Emission Spectroscopy: Principle01:19

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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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Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation01:26

Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation

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Inductively coupled plasma (ICP) is the common plasma source used in atomic emission spectroscopy (AES), a technique that detects and analyzes various elements in a sample. This method is often called inductively coupled plasma atomic emission spectroscopy (ICP-AES).
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Atomic Emission Spectroscopy: Lab01:29

Atomic Emission Spectroscopy: Lab

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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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Exploring Nanogeochemical Environments: New Insights from Single Particle ICP-TOFMS and AF4-ICPMS.

Manuel D Montaño1, Chad W Cuss2,3, Haley M Holliday4

  • 1Department of Environmental Sciences, Western Washington University, Bellingham, Washington 98225, United States.

ACS Earth & Space Chemistry
|May 2, 2022
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Summary
This summary is machine-generated.

Nanogeochemistry research uses single particle inductively coupled plasma time-of-flight mass spectrometry (spICP-TOF-MS) to analyze nanoparticle composition in river systems. This advanced technique reveals diverse mineralogy and heteroaggregates, crucial for understanding trace element transport.

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Area of Science:

  • Environmental Science
  • Geochemistry
  • Analytical Chemistry

Background:

  • Nanogeochemistry is an emerging field studying nanoparticles in Earth systems.
  • Advanced analytical techniques from nanotechnology are applicable to nanogeochemistry.
  • Single particle inductively coupled plasma time-of-flight mass spectrometry (spICP-TOF-MS) offers simultaneous quantification of the atomic mass spectrum.

Purpose of the Study:

  • To demonstrate the utility of spICP-TOF-MS in analyzing nanoparticle composition and processes in a boreal river system.
  • To investigate the role of nanoparticles in trace element speciation and transport.
  • To combine spICP-TOF-MS with AF4-ICPMS for a comprehensive analysis of nanogeochemical processes.

Main Methods:

  • Analysis of river and tributary samples using spICP-TOF-MS.
  • Classification of particles based on elemental composition (Al, Si, Fe).
  • Coupling spICP-TOF-MS with Asymmetric Flow Field-Flow Fractionation coupled to ICP-MS (AF4-ICPMS) for analyzing trace element carriers.

Main Results:

  • spICP-TOF-MS revealed chemically heterogeneous nanoparticle populations, indicating diverse mineralogy or heteroaggregates.
  • The study identified the importance of suspended Fe and Mn in the speciation of Pb.
  • AF4-ICPMS analysis complemented spICP-TOF-MS findings on dissolved organic matter and nanoparticulate Fe/Mn.

Conclusions:

  • The combination of spICP-TOF-MS and AF4-ICPMS is effective for studying isotopic and elemental ratios of individual nanoparticles.
  • This approach advances the understanding of nanogeochemical processes and colloid-facilitated trace element transport.
  • The findings highlight the complexity of nanoparticle composition and its impact on environmental systems.