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Atomic Absorption Spectroscopy: Lab

Atomic Absorption Spectroscopy: Lab

For AAS measurements, samples must be introduced as clear solutions, often requiring extensive preliminary treatment to dissolve materials like soils, animal tissues, and minerals. Common methods for sample preparation include treatment with hot mineral acids, wet ashing, combustion in closed containers, high-temperature ashing, or fusion with reagents.
Solutions containing organic solvents, such as low-molecular-mass alcohols, esters, or ketones, enhance absorbances by increasing nebulizer...

Atomic Absorption Spectroscopy: Overview

Atomic Absorption Spectroscopy: Overview

Atomic absorption spectroscopy (AAS) is a technique used to analyze elements by measuring electromagnetic radiation (EMR) absorbed by atoms, which causes them to transition to a higher-energy orbit. The most crucial step in AAS is atomization, where the analyte is converted into gas-phase atoms, typically through a flame or furnace. Some of these atoms become thermally excited in the flame, while most remain in the ground state.
When irradiated by EMR of a particular wavelength, these...

Atomic Spectroscopy: Absorption, Emission, and Fluorescence

Atomic Spectroscopy: Absorption, Emission, and Fluorescence

Atomic spectroscopy is a vital tool in elemental analysis, both qualitatively and quantitatively. It can be broadly divided into optical spectroscopy, mass spectroscopy, and X-ray spectroscopy methods. The optical spectroscopic methods are atomic absorption spectroscopy (AAS), atomic emission spectroscopy (AES), and atomic fluorescence spectroscopy (AFS). The first step in all three methods is atomization, where the solid, liquid, or solution-phase samples are converted into gas-phase atoms and...

Atomic Absorption Spectroscopy: Atomization Methods

Atomic Absorption Spectroscopy: Atomization Methods

Atomic Absorption Spectroscopy (AAS) atomizes samples through flame atomization or electrothermal atomization. Flame atomization typically involves a nebulizer and spray chamber assembly to combine the sample with a fuel–oxidant mixture, creating a fine aerosol mist that enters a burner. Typically, the fuel and oxidant are combined in an approximately stoichiometric ratio. However, for atoms that are easily oxidized, a fuel-rich mixture may be more advantageous. Only about 5% of the aerosol...

Atomic Fluorescence Spectroscopy

Atomic Fluorescence Spectroscopy

Atomic fluorescence spectroscopy (AFS) is an analytical technique that involves the electronic transitions of atoms in a flame, furnace, or plasma being excited by electromagnetic (EM) radiation. When these atoms absorb energy, they become excited and subsequently release energy as they return to their original state. This emitted light, or "fluorescence," is observed at a right angle to the incident beam. Both absorption and emission processes transpire at distinct wavelengths, which are...

Flame Photometry: Overview

Flame Photometry: Overview

Flame photometry, also known as flame emission spectrometry, is a technique used for the qualitative and quantitative analysis of elements present in a sample using a flame as the source of excitation energy. The concept of flame photometry was realized in the early 1860s by Kirchhoff and Bunsen, who discovered that specific elements emit characteristic radiation when excited in flames. The first instrument developed for this purpose was used to measure sodium (Na) in plant ash using a Bunsen...

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Related Experiment Video

Updated: Jul 5, 2026

Flame Experiments at the Advanced Light Source: New Insights into Soot Formation Processes

Flame Experiments at the Advanced Light Source: New Insights into Soot Formation Processes

Published on: May 26, 2014

[Digestion-flame atomic absorption spectroscopy].

Liang Xu¹, Jian-Guo Hu, Rui-Ping Liu

¹Analysis and Testing Center, Inner Mongolia University for Nationalities, Tongliao 028042, China. nmgxl66@163.com

Guang Pu Xue Yu Guang Pu Fen Xi = Guang Pu

|April 22, 2008

Summary

A new method uses microwave digestion and flame atomic absorption spectroscopy (FAAS) to accurately measure seven metal elements in Mongolian plants. This technique is faster, simpler, and more environmentally friendly than traditional methods.

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Last Updated: Jul 5, 2026

Flame Experiments at the Advanced Light Source: New Insights into Soot Formation Processes

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Combustion Chemistry of Fuels: Quantitative Speciation Data Obtained from an Atmospheric High-temperature Flow Reactor with Coupled Molecular-beam Mass Spectrometer

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Area of Science:

Analytical Chemistry
Environmental Science

Context:

Accurate elemental analysis is crucial for understanding plant physiology and environmental impact.
Traditional methods for metal element determination in plant samples can be time-consuming and generate hazardous waste.

Purpose:

To develop and validate a microwave digestion-flame atomic absorption spectroscopy (FAAS) method for quantifying seven essential metal elements (Na, Zn, Cu, Fe, Mn, Ca, Mg) in Mongolian plant samples.

Summary:

A novel method combining microwave digestion with FAAS was optimized for determining Na, Zn, Cu, Fe, Mn, Ca, and Mg in Mongolian plants.
The method demonstrated high accuracy (95.8–104.3% recovery) and precision (1.6–4.2% RSD), validated against a standard reference material (GSV-1).
Microwave digestion offers significant advantages over traditional wet methods, including simplicity, reduced reagent consumption, speed, and reduced pollution.

Impact:

Provides a reliable and efficient analytical tool for researchers studying Mongolian flora and its elemental composition.
Facilitates environmental monitoring and agricultural assessments by enabling rapid and accurate metal analysis in plant tissues.
Promotes greener analytical practices in elemental analysis through the adoption of microwave digestion technology.