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Related Concept Videos

Inductively Coupled Plasma-Mass Spectrometry (ICP-MS): Interferences01:20

Inductively Coupled Plasma-Mass Spectrometry (ICP-MS): Interferences

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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...
430
Atomic Absorption Spectroscopy: Lab01:21

Atomic Absorption Spectroscopy: Lab

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For AAS measurements, samples must be introduced as clear solutions, often requiring extensive preliminary treatment to dissolve materials like soils, animal tissues, and minerals. Common methods for sample preparation include treatment with hot mineral acids, wet ashing, combustion in closed containers, high-temperature ashing, or fusion with reagents.
 Solutions containing organic solvents, such as low-molecular-mass alcohols, esters, or ketones, enhance absorbances by increasing...
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Atomic Emission Spectroscopy: Lab01:29

Atomic Emission Spectroscopy: Lab

153
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...
153
Inductively Coupled Plasma–Mass Spectrometry (ICP–MS): Overview01:19

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

689
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...
689
Atomic Absorption Spectroscopy: Interference01:25

Atomic Absorption Spectroscopy: Interference

724
Interference leads to systematic error in atomic absorption (AA) measurements by enhancing or diminishing the analytical signal or the background. These interferences can be grouped into three main categories: spectral interference, chemical interference, and physical interference.
Spectral interference occurs when signals from other elements or molecules overlap with the analyte signal, falsely elevating or masking the analyte's absorbance. This interference can be corrected using Zeeman,...
724
Inductively Coupled Plasma Atomic Emission Spectroscopy: Principle01:19

Inductively Coupled Plasma Atomic Emission Spectroscopy: Principle

567
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.
The ions and electrons produced interact with the fluctuating magnetic field created by a water-cooled...
567

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Speciation and Bioavailability Measurements of Environmental Plutonium Using Diffusion in Thin Films
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Minimum Detectable Intakes and Doses for Uranium Bioassays-Comparison between Alpha Spectrometry and ICP-MS.

B Rosenberg1, A Johnson, C G Potter

  • 11835 Terminal Dr., Suite 200, Richland, WA 99354.

Health Physics
|July 25, 2024
PubMed
Summary
This summary is machine-generated.

Monitoring occupational uranium exposure is challenging. Mass spectrometry with radiochemical separation offers the highest sensitivity for detecting anthropogenic uranium mixtures in urine, aiding in accurate exposure assessments.

Keywords:
bioassaydosimetry, internalmonitoring, personneluranium

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Area of Science:

  • Occupational health
  • Analytical chemistry
  • Radiological protection

Background:

  • Naturally occurring uranium presents challenges for monitoring occupational exposures.
  • Retroactive monitoring methods for uranium exposure have varying benefits and drawbacks.
  • Accurate assessment of uranium intake is crucial for worker safety.

Purpose of the Study:

  • To compare analytical methods for monitoring occupational uranium exposure.
  • To evaluate the sensitivity of different techniques for detecting uranium in urine.
  • To present a method for determining occupational exposure based on analytical results.

Main Methods:

  • Uranium analysis in urine using mass spectrometry and alpha spectrometry.
  • Comparison of minimum detectable concentrations (MDCs) for each analytical method.
  • Development and application of an intake determination method.

Main Results:

  • Mass spectrometry with radiochemical separation demonstrated superior sensitivity.
  • The method was evaluated for various uranium solubility types and mixtures.
  • Minimum detectable doses were calculated for intake determination.

Conclusions:

  • Mass spectrometry with radiochemical separation is the most sensitive method for detecting occupational exposures to anthropogenic uranium mixtures.
  • The proposed intake determination method, combined with sensitive analysis, improves occupational exposure monitoring.
  • This approach enhances the ability to accurately assess and manage uranium exposure risks in the workplace.