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Related Concept Videos

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

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

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 refractory oxide ion...
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There are two main infrared (IR) spectrophotometers: dispersive IR spectrometers and Fourier transform infrared (FTIR) spectrometers. In a dispersive IR spectrometer, a beam of infrared radiation produced by a hot wire is divided into two parallel equal-intensity beams using mirrors. One beam passes through the sample, while another is a reference beam. The beams then move through the monochromator, which separates the radiations into a continuous spectrum of different frequencies. The...
Interaction of EM Radiation with Matter: Spectroscopy01:12

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Electromagnetic (EM) radiation can be considered an oscillating electric and magnetic field propagating through a medium that can interact with matter in its path. The electric field in the radiation can interact with electrical charges in the atoms or molecules in the matter. On the other hand, the magnetic field can interact with the magnetic field in the atomic nucleus. The study of the interaction between electromagnetic radiation and matter is termed spectroscopy. Spectroscopy is the study...
Atomic Absorption Spectroscopy: Interference01:25

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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,...
Mass Spectrometry: Complex Analysis01:21

Mass Spectrometry: Complex Analysis

Mass spectrometry is an important technique for the identification of pure compounds. However, it has some limitations for the analysis of complex mixtures, often due to excessive fragmentation making the spectrum too complicated to decipher. Mass spectrometry can be combined with suitable separation methods in sequence, forming hyphenated methods, which are useful in the analysis of complex mixtures.
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Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation01:26

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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).
There are three main types of inductively coupled plasma atomic emission spectroscopy  (ICP-AES) instruments: sequential, simultaneous multichannel, and Fourier transform instruments, with the latter being less commonly used.

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Performing Spectroscopy on Plasmonic Nanoparticles with Transmission-Based Nomarski-Type Differential Interference Contrast Microscopy
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Nonlinear analysis: the intermodulated differential immittance spectroscopy.

Alberto Battistel1, Fabio La Mantia

  • 1Analytische Chemie-Zentrum für Elektrochemie, Ruhr-Universität Bochum, Bochum, Germany. alberto.battistel@rub.de

Analytical Chemistry
|June 11, 2013
PubMed
Summary
This summary is machine-generated.

Intermodulation differential immitance spectroscopy reveals electrochemical system nonlinearities. This technique precisely determines Schottky diode properties like flat band voltage and doping levels.

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Area of Science:

  • Electrochemistry
  • Nonlinear Systems Analysis
  • Materials Science

Background:

  • Electrochemical systems exhibit inherent nonlinear behavior, unlike passive electronic components.
  • This nonlinearity offers valuable insights into reaction mechanisms and the structure of the electrochemical double layer.
  • Intermodulation analysis is a key technique for probing these nonlinear characteristics.

Purpose of the Study:

  • To define and detail a novel intermodulation differential immitance spectroscopy (IDIS) technique.
  • To demonstrate the application of IDIS for analyzing nonlinear electrochemical systems.
  • To establish IDIS as a method for characterizing semiconductor properties.

Main Methods:

  • Development of a measurement and analysis setup for intermodulated sidebands.
  • Definition of the intermodulation differential immitance spectroscopy (IDIS) technique.
  • Utilizing a commercial Schottky diode as a model system for validation.
  • Analysis of differential immitance spectra as a function of stimulus frequency.

Main Results:

  • A commercial Schottky diode was precisely characterized using a single differential immittance spectrum.
  • Key parameters such as flat band voltage and doping level were accurately calculated.
  • The resolution limits of the IDIS technique were demonstrated using a dummy cell with passive elements.

Conclusions:

  • Intermodulation differential immitance spectroscopy is an effective method for analyzing nonlinear electrochemical systems.
  • The technique provides accurate determination of semiconductor properties from spectral data.
  • IDIS offers a powerful tool for understanding electrochemical interfaces and reaction mechanisms.