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Atomic Emission Spectroscopy: Overview

Atomic Emission Spectroscopy: Overview

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...

Atomic Emission Spectroscopy: Instrumentation

Atomic Emission Spectroscopy: Instrumentation

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.

Emission Spectra

Emission Spectra

When solids, liquids, or condensed gases are heated sufficiently, they radiate some of the excess energy as light. Photons produced in this manner have a range of energies, and thereby produce a continuous spectrum in which an unbroken series of wavelengths is present.

Atomic Emission Spectroscopy: Interference

Atomic Emission Spectroscopy: Interference

In atomic emission spectroscopy (AES), high-temperature atomizers excite a broad range of elements and molecules that generate complex emissions from sources such as oxides, hydroxides, and flame combustion products in the flame or plasma. Several strategies can be employed to minimize spectral interferences caused by overlapping emission lines or bands. These include increasing instrument resolution, choosing alternative emission lines, optimally placing the detector in low-background regions,...

Atomic Emission Spectroscopy: Lab

Atomic Emission Spectroscopy: Lab

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...

Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation

Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation

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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Related Experiment Video

Updated: May 7, 2025

Method for Recording Broadband High Resolution Emission Spectra of Laboratory Lightning Arcs

Method for Recording Broadband High Resolution Emission Spectra of Laboratory Lightning Arcs

Published on: August 27, 2019

Association of structured continuum emission with dynamic aurora.

E Spanswick¹, J Liang², J Houghton²

¹Department of Physics and Astronomy, University of Calgary, 2500 University Drive N.W., Calgary, T2N 1N4, AB, Canada. elspansw@ucalgary.ca.

Nature Communications

|December 31, 2024

Summary

Structured continuum emission linked to dynamic aurora was observed. This finding reveals complex meso-scale coupling between auroral processes, plasma, and the neutral atmosphere.

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Area of Science:

Space Physics
Atmospheric Science
Plasma Physics

Background:

Ionospheric luminosity, including aurora, reveals space environment dynamics.
Continuum emission in the ionosphere is known but poorly studied in relation to aurora.
Previous studies were limited by observational constraints.

Purpose of the Study:

To investigate structured continuum emission associated with dynamic aurora.
To analyze the spatial structure, spectra, and location of these emissions.
To understand the coupling between auroral processes and the ionosphere.

Main Methods:

Spectrally resolved measurements were utilized.
Observations focused on dynamic auroral events.
Analysis included spatial structure and spectral characteristics.

Main Results:

Structured continuum emission was observed in conjunction with dynamic aurora.
Detailed spectral and spatial information of these emissions was obtained.
The findings add critical information about previously unexplained emissions.

Conclusions:

Auroral processes, plasma, and the neutral atmosphere exhibit complex meso-scale coupling.
This coupling is more intricate than previously understood.
Meso-scale auroral precipitation may influence atmospheric chemistry to create continuum structure.