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Related Concept Videos

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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Atomic emission spectroscopy (AES) is an analytical technique used to determine the elemental composition of a sample by analyzing the light emitted from excited atoms. In AES, atoms in a sample are excited to higher energy levels by thermal energy from high-temperature sources, such as plasma, arcs, or sparks. When these excited atoms return to lower energy states, they emit light at specific wavelengths characteristic of each element. The resulting atomic emission spectrum, which consists of...
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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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The instrumentation of atomic emission spectrometry (AES) involves various components, including atomization devices that convert samples into gas-phase atoms and ions. There are two main types of atomization devices: continuous and discrete atomizers.  Continuous atomizers, like plasmas and flames, introduce samples in a constant stream, while discrete atomizers inject individual samples using syringes or autosamplers. The most common discrete atomizer is the electrothermal atomizer.
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Atomic Absorption Spectroscopy: Radiation and Light Sources01:13

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Atomic absorption spectroscopy (AAS) relies on the Beer-Lambert law, which requires that the radiation source emits a narrow range of wavelengths to match the absorption characteristics of the analyte atom. The primary criteria for choosing an appropriate radiation source in AAS is to provide a precise and intense emission at specific wavelengths that will allow accurate detection of the analyte.
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The non-destructive nature and ability to provide valuable chemical information make IR spectroscopy a versatile technique with broad applications in various scientific and industrial fields. IR spectroscopy is commonly used to identify and characterize organic and inorganic compounds. It provides information about the functional groups present in a molecule and the bonding between atoms. This helps in the structural elucidation of compounds during organic synthesis, pharmaceutical research,...
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Gas-phase broadband spectroscopy using active sources: progress, status, and applications.

Kevin C Cossel1, Eleanor M Waxman1, Ian A Finneran2

  • 1National Institute of Standards and Technology, 325 Broadway, Boulder, Colorado 80305, USA.

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Summary

Broadband spectroscopy enables simultaneous measurement of multiple gases. This review covers its techniques, components, applications, and future potential for gas analysis.

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Area of Science:

  • Spectroscopy
  • Analytical Chemistry
  • Physical Chemistry

Background:

  • Broadband spectroscopy is a powerful technique for analyzing gas mixtures.
  • Simultaneous detection of multiple species is crucial in various scientific fields.

Purpose of the Study:

  • To provide a comprehensive review of broadband spectroscopy.
  • To discuss its fundamental techniques, implementations, and applications.
  • To explore future advancements in the field.

Main Methods:

  • Review of existing literature on broadband spectroscopy.
  • Discussion of key components: light sources, absorption cells, detection methods.
  • Analysis of commonly-used broadband spectroscopic techniques.

Main Results:

  • Detailed overview of broadband spectroscopy principles and components.
  • Exploration of current applications across different domains.
  • Identification of emerging trends and future research directions.

Conclusions:

  • Broadband spectroscopy is a versatile and essential tool for gas analysis.
  • Continued innovation promises expanded applications and improved performance.
  • This review serves as a foundational resource for researchers in the field.