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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...

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.

Raman Spectroscopy Instrumentation: Overview

Raman Spectroscopy Instrumentation: Overview

A conventional Raman spectrophotometer includes a laser source, a sample holding system, a wavelength selector, and a detector.
The monochromatic laser source, typically using visible or near-infrared radiation, generates a highly focused beam of light. This light interacts with the molecules of the sample, scattering some of the light. Liquid and gaseous samples are usually tested in ordinary glass capillaries, while solids can be analyzed as powders packed in capillaries or as potassium...

Mass Spectrum

Mass Spectrum

A mass spectrum is the graphical representation of the relative abundance of the charged fragments in an analyte plotted against their mass-to-charge ratio (m/z). The plot's x-axis represents the ratio of the mass of the charged fragment to the number of charges it carries. The y axis of the plot represents the relative abundance of each charged species. The relative abundance is calculated from the signal intensity of each charged species recorded at the detector. The most intense signal (the...

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.

Raman Spectroscopy: Overview

Raman Spectroscopy: Overview

The underlying principle of Raman spectroscopy is based on the interaction between light and matter, specifically molecules' inelastic scattering of photons. When a monochromatic beam of light, typically from a laser source, interacts with a sample, most scattered light has the same frequency as the incident light. This is known as Rayleigh scattering.
However, a small fraction of the scattered light exhibits a frequency shift due to the exchange of energy between the incident photons and the...

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Related Experiment Video

Updated: Jun 23, 2026

The Use of an Automated System (GreenFeed) to Monitor Enteric Methane and Carbon Dioxide Emissions from Ruminant Animals

The Use of an Automated System (GreenFeed) to Monitor Enteric Methane and Carbon Dioxide Emissions from Ruminant Animals

Published on: September 7, 2015

[Spectroscopy technique and ruminant methane emissions accurate inspecting].

Zhan-Huan Shang¹, Xu-Sheng Guo, Rui-Jun Long

¹College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730020, China. shangzhh@lzu.edu.cn

Guang Pu Xue Yu Guang Pu Fen Xi = Guang Pu

|May 22, 2009

Summary

Accurately monitoring atmospheric methane (CH4) is crucial for climate change mitigation. Spectroscopy offers a precise method to measure ruminant methane emissions, aiding in developing effective reduction strategies.

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Design and Use of a Full Flow Sampling System (FFS) for the Quantification of Methane Emissions

Design and Use of a Full Flow Sampling System (FFS) for the Quantification of Methane Emissions

Published on: June 12, 2016

Measuring Dissolved Methane in Aquatic Ecosystems Using An Optical Spectroscopy Gas Analyzer

Measuring Dissolved Methane in Aquatic Ecosystems Using An Optical Spectroscopy Gas Analyzer

Published on: July 26, 2024

Related Experiment Videos

Last Updated: Jun 23, 2026

The Use of an Automated System (GreenFeed) to Monitor Enteric Methane and Carbon Dioxide Emissions from Ruminant Animals

The Use of an Automated System (GreenFeed) to Monitor Enteric Methane and Carbon Dioxide Emissions from Ruminant Animals

Published on: September 7, 2015

Design and Use of a Full Flow Sampling System (FFS) for the Quantification of Methane Emissions

Design and Use of a Full Flow Sampling System (FFS) for the Quantification of Methane Emissions

Published on: June 12, 2016

Measuring Dissolved Methane in Aquatic Ecosystems Using An Optical Spectroscopy Gas Analyzer

Measuring Dissolved Methane in Aquatic Ecosystems Using An Optical Spectroscopy Gas Analyzer

Published on: July 26, 2024

Area of Science:

Atmospheric Chemistry
Climate Science
Animal Science

Context:

Rising atmospheric methane (CH4) concentrations contribute significantly to global climate change.
Accurate monitoring of greenhouse gas emissions, particularly methane, is essential for effective climate policy.
Current estimates of methane emissions from ruminants are often imprecise due to measurement challenges.

Purpose:

To highlight the need for precise methane (CH4) monitoring in ruminant production systems.
To identify spectroscopy as a key technology for accurate methane emission measurement.
To emphasize the role of accurate data in developing methane reduction strategies.

Summary:

Atmospheric methane (CH4) drives climate change directly and indirectly through chemical processes.
Existing methods for measuring ruminant methane emissions lack accuracy, necessitating improved techniques.
Spectroscopy, including infrared and laser-based systems, provides a reliable method for dynamic methane emission determination.

Impact:

Improved methane monitoring can provide a scientific basis for targeted emission reduction measures.
Accurate data on ruminant methane emissions will support the development of effective mitigation strategies.
Advancements in spectroscopy contribute to global efforts in combating climate change.