Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Atomic Absorption Spectroscopy: Atomization Methods01:25

Atomic Absorption Spectroscopy: Atomization Methods

1.6K
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...
1.6K
IR Absorption Frequency: Hybridization01:21

IR Absorption Frequency: Hybridization

1.4K
Hydrocarbons such as alkanes, alkenes, and alkynes show characteristic C–H stretching absorption bands. These IR stretching frequencies depend on the hybridization of the involved carbon atom and can be explained in terms of the s character of each hybridized atomic orbital.
Among the sp, sp2, and sp3 hybridized orbitals, sp orbitals have the maximum s character (50%). Consequently, the electrons are held more closely to the nucleus, resulting in stronger and shorter C–H bonds that...
1.4K
IR Absorption Frequency: Delocalization01:04

IR Absorption Frequency: Delocalization

1.4K
Electron delocalization refers to the distribution of electrons across multiple atoms within a molecule rather than being confined to a single atom or bond. This phenomenon is common in systems with conjugated bonds—structures where alternating single and double bonds allow π-electrons to move freely across the network. The movement of electrons stabilizes the molecule and can affect various chemical properties, including vibrational frequencies observed in IR spectroscopy.
In IR...
1.4K
The de Broglie Wavelength02:32

The de Broglie Wavelength

33.8K
In the macroscopic world, objects that are large enough to be seen by the naked eye follow the rules of classical physics. A billiard ball moving on a table will behave like a particle; it will continue traveling in a straight line unless it collides with another ball, or it is acted on by some other force, such as friction. The ball has a well-defined position and velocity or well-defined momentum, p = mv, which is defined by mass m and velocity v at any given moment. This is the typical...
33.8K
Atomic Absorption Spectroscopy: Interference01:25

Atomic Absorption Spectroscopy: Interference

2.1K
Interference leads to systematic error in atomic absorption (AA) measurements by enhancing or diminishing the analytical signal or the background. These interferences can be grouped into three main categories: spectral interference, chemical interference, and physical interference.
Spectral interference occurs when signals from other elements or molecules overlap with the analyte signal, falsely elevating or masking the analyte's absorbance. This interference can be corrected using Zeeman,...
2.1K
Molecular Spectroscopy: Absorption and Emission01:14

Molecular Spectroscopy: Absorption and Emission

4.7K
Molecules possess discrete energy levels called quantum states. Unlike atoms, which have simpler energy levels, molecules possess additional rotational and vibrational energy levels.  Each energy level is separated by an energy gap, with the gaps between adjacent electronic, vibrational, and rotational levels varying significantly. The three types of energy levels in a diatomic molecule are shown in Figure 1.
4.7K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Influence of Source Parameters on the Polarization Properties of Beams for Practical Free-Space Quantum Key Distribution.

Entropy (Basel, Switzerland)·2021
Same author

Defining the T<sub>H</sub>17 cell lineage.

Nature reviews. Immunology·2021
Same author

Targeting lysophospholipid acid receptor 1 and ROCK kinases promotes antiviral innate immunity.

Science advances·2021
Same author

RORα is critical for mTORC1 activity in T cell-mediated colitis.

Cell reports·2021
Same author

Oestradiol promotes the intrahepatic bile duct development of C57BL/6CrSlc mice during embryonic period via Notch signalling pathway.

Journal of cellular and molecular medicine·2021
Same author

IGSF11 is required for pericentric heterochromatin dissociation during meiotic diplotene.

PLoS genetics·2021

Related Experiment Video

Updated: Feb 14, 2026

Author Spotlight: Exploring Light-Driven Chemical Reactions and Energy-Harnessing Devices in Photochemical Research
08:12

Author Spotlight: Exploring Light-Driven Chemical Reactions and Energy-Harnessing Devices in Photochemical Research

Published on: February 16, 2024

16.0K

Laser absorption spectroscopy data processing method based on co-frequency and dual-wavelength and its application.

Tang Qi-Xing, Zhang Yu-Jun, Chen Dong

    Optics Express
    |February 25, 2018
    PubMed
    Summary

    Atmospheric turbulence noise in open-space laser absorption spectroscopy is reduced using a novel co-frequency and dual-wave spectral data processing method. This technique significantly improves measurement stability and accuracy for atmospheric detection systems.

    More Related Videos

    Quantitative Analysis of Vacuum Induction Melting by Laser-induced Breakdown Spectroscopy
    03:49

    Quantitative Analysis of Vacuum Induction Melting by Laser-induced Breakdown Spectroscopy

    Published on: June 10, 2019

    7.7K
    Characterizing Far-infrared Laser Emissions and the Measurement of Their Frequencies
    09:38

    Characterizing Far-infrared Laser Emissions and the Measurement of Their Frequencies

    Published on: December 18, 2015

    12.7K

    Related Experiment Videos

    Last Updated: Feb 14, 2026

    Author Spotlight: Exploring Light-Driven Chemical Reactions and Energy-Harnessing Devices in Photochemical Research
    08:12

    Author Spotlight: Exploring Light-Driven Chemical Reactions and Energy-Harnessing Devices in Photochemical Research

    Published on: February 16, 2024

    16.0K
    Quantitative Analysis of Vacuum Induction Melting by Laser-induced Breakdown Spectroscopy
    03:49

    Quantitative Analysis of Vacuum Induction Melting by Laser-induced Breakdown Spectroscopy

    Published on: June 10, 2019

    7.7K
    Characterizing Far-infrared Laser Emissions and the Measurement of Their Frequencies
    09:38

    Characterizing Far-infrared Laser Emissions and the Measurement of Their Frequencies

    Published on: December 18, 2015

    12.7K

    Area of Science:

    • Optical Engineering
    • Atmospheric Science
    • Spectroscopy

    Background:

    • Open-space atmospheric laser absorption spectroscopy is susceptible to atmospheric turbulence.
    • Turbulence introduces fluctuation noise, degrading signal quality and measurement accuracy.

    Purpose of the Study:

    • To develop and validate a new spectral data processing method to mitigate atmospheric turbulence noise.
    • To enhance the stability and accuracy of open-space atmospheric detection systems.

    Main Methods:

    • Theoretical analysis of atmospheric turbulence correction methods.
    • Development of a co-frequency and dual-wave spectral data processing technique.
    • Modification of scintillation and background noise.
    • Establishment of an open-space atmospheric detection system.

    Main Results:

    • Maximum spectral signal fluctuation reduced from 12.854% to 4.635%.
    • Correlation coefficient for single-intensity absorbance fitting reached 0.9525.
    • Mean standard deviation improved from 0.6928 to 0.1370 compared to existing algorithms.
    • Standard deviation reduced from 0.2974 to 0.1038 compared to two-wavelength differential absorption.

    Conclusions:

    • The co-frequency and dual-wave method effectively reduces atmospheric turbulence and laser flashing noise.
    • This method significantly improves the stability of concentration measurements in open-space atmospheric detection.
    • The technique holds practical engineering value for atmospheric monitoring.