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Related Concept Videos

Atomic Emission Spectroscopy: Overview01:20

Atomic Emission Spectroscopy: Overview

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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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Atomic Emission Spectroscopy: Lab01:29

Atomic Emission Spectroscopy: Lab

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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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Atomic Absorption Spectroscopy: Overview01:27

Atomic Absorption Spectroscopy: Overview

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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...
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Atomic Absorption Spectroscopy: Lab01:21

Atomic Absorption Spectroscopy: Lab

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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...
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Atomic Spectroscopy: Absorption, Emission, and Fluorescence01:23

Atomic Spectroscopy: Absorption, Emission, and Fluorescence

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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...
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Related Experiment Video

Updated: Mar 18, 2026

Dependence of Laser-induced Breakdown Spectroscopy Results on Pulse Energies and Timing Parameters Using Soil Simulants
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[Study on Soil Elements Detection with Laser-Induced Breakdown Spectroscopy: A Review].

Ke-qiang Yu, Yan-ru Zhao, Fei Liu

    Guang Pu Xue Yu Guang Pu Fen Xi = Guang Pu
    |July 13, 2016
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    Summary

    Laser-induced breakdown spectroscopy (LIBS) offers a fast, sample-free method for soil analysis. This review highlights LIBS applications for detecting major, nutrient, and heavy metal elements in soil, crucial for agriculture.

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    Area of Science:

    • Analytical Chemistry
    • Spectroscopy
    • Environmental Science

    Context:

    • Soil contamination by heavy metals and organic matter is a critical issue in modern agriculture.
    • Accurate and rapid detection methods are essential for sustainable agricultural development.
    • Traditional chemical analysis methods often require extensive sample preparation.

    Purpose:

    • To review the research achievements and trends in soil element detection using Laser-Induced Breakdown Spectroscopy (LIBS).
    • To introduce the fundamental principles and structural composition of LIBS systems.
    • To present the developing prospects and future tendencies of LIBS technology in soil analysis.

    Summary:

    • This paper reviews the application of Laser-Induced Breakdown Spectroscopy (LIBS) for soil element detection.
    • It covers LIBS system fundamentals, applications in analyzing major, nutrient, and heavy metal elements, and related soil studies.
    • The review details LIBS's advantages: no sample preparation, remote analysis, and multi-element capability.

    Impact:

    • LIBS technology shows significant potential as a green analytical technique for rapid and accurate soil monitoring.
    • It supports efficient management of soil resources and prevention of agricultural pollution.
    • LIBS can enhance the development of sustainable agriculture through advanced chemical analysis.