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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.

Attenuated Total Reflectance (ATR) Infrared Spectroscopy: Overview

Attenuated Total Reflectance (ATR) Infrared Spectroscopy: Overview

Attenuated total reflectance (ATR) infrared spectroscopy is a powerful analytical technique used to study the composition of materials. It is widely employed in chemistry, materials science, forensic science, and other fields where sample characterization is required. ATR has several advantages over traditional transmission IR spectroscopy, including the requirement of little to no sample preparation and the ability to analyze a wide range of samples.
The ATR process begins by directing a beam...

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.

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...

Infrared (IR) Spectroscopy: Overview

Infrared (IR) Spectroscopy: Overview

When electromagnetic radiation passes through a material, atoms or molecules transition from a lower to a higher energy state by absorbing radiation corresponding to the energy difference between the two states. The absorption of infrared (IR) radiation causes transitions between vibrational energy levels in a molecule. Therefore, IR spectroscopy is a useful analytical tool for determining the molecular structure of molecules.
Different compounds display unique properties due to their...

Atomic Absorption Spectroscopy: Instrumentation

Atomic Absorption Spectroscopy: Instrumentation

An atomic absorption spectrophotometer (AAS) comprises several components: a radiation source, an atomizer, a monochromator, and a detector. The radiation source can be a hollow-cathode lamp (HCL) or an electrodeless-discharge lamp (EDL), both of which provide a narrow emission line of the required wavelength. However, some instruments use continuum sources and high-resolution monochromators to achieve a narrow range of radiation.
The atomizer used in AAS can be either a flame atomizer or an...

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Related Experiment Video

Updated: May 12, 2026

Bringing the Visible Universe into Focus with Robo-AO

Bringing the Visible Universe into Focus with Robo-AO

Published on: February 12, 2013

All-sky imaging: a simple, versatile system for atmospheric research.

Axel Kreuter¹, Matthias Zangerl, Michael Schwarzmann

¹Division for Biomedical Physics, Department of Physiology and Medical Physics, Innsbruck Medical University, Innsbruck, Austria. axel.kreuter@i-med.ac.at

|April 10, 2013

Summary

A new automated all-sky imaging system uses a fish-eye camera and rotating polarizer for atmospheric studies. This system effectively maps sky polarization and detects clouds, correlating with UV irradiance measurements.

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Simulating Imaging of Large Scale Radio Arrays on the Lunar Surface

Simulating Imaging of Large Scale Radio Arrays on the Lunar Surface

Published on: July 30, 2020

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Last Updated: May 12, 2026

Bringing the Visible Universe into Focus with Robo-AO

Bringing the Visible Universe into Focus with Robo-AO

Published on: February 12, 2013

Simulating Imaging of Large Scale Radio Arrays on the Lunar Surface

Simulating Imaging of Large Scale Radio Arrays on the Lunar Surface

Published on: July 30, 2020

Area of Science:

Atmospheric Physics
Optical Remote Sensing

Background:

Accurate atmospheric monitoring is crucial for understanding climate and weather patterns.
Existing methods for measuring sky polarization and cloud cover can be complex and costly.

Purpose of the Study:

To present a simple, inexpensive, and automated all-sky imaging system for atmospheric research.
To demonstrate the system's capabilities in generating polarization maps and detecting clouds.

Main Methods:

Utilizing a commercial digital camera with a fish-eye lens and a rotating polarizer for image acquisition.
Computing Stokes vectors from images taken at various polarizer angles to create polarization maps.
Applying a color-ratio algorithm for automated cloud detection and calculating a Sun coverage parameter.

Main Results:

Validation of the polarization measurement method against a spectroradiometer.
Successful automated cloud detection validated against synoptic observations.
Demonstrated correlation between cloud cover, Sun coverage, and UV irradiance.

Conclusions:

The developed all-sky imaging system is a cost-effective tool for atmospheric research.
The system provides valuable data for polarization mapping, cloud detection, and UV irradiance estimation.