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

Gas Chromatography: Types of Detectors-II01:19

Gas Chromatography: Types of Detectors-II

462
In gas chromatography, different detectors are employed to meet specific analytical needs. These detectors are often categorized based on their detection mechanisms and the types of compounds they are best suited to analyze. Thermal Conductivity Detectors (TCD), Flame Ionization Detectors (FID), and Electron Capture Detectors (ECD) represent common categories, each with unique operating principles and applications. However, beyond these, several other detectors are designed for more specialized...
462
¹³C NMR: Distortionless Enhancement by Polarization Transfer (DEPT)01:20

¹³C NMR: Distortionless Enhancement by Polarization Transfer (DEPT)

1.1K
When proton-coupled carbon-13 spectra are simplified by a broadband proton decoupling technique, structural information about the coupled protons is lost. Distortionless enhancement by polarization transfer (DEPT) is a technique that provides information on the number of hydrogens attached to each carbon in a molecule. While the DEPT experiment utilizes complex pulse sequences, the pulse delay and flip angle are specifically manipulated. The resulting signals have different phases depending on...
1.1K

You might also read

Related Articles

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

Sort by
Same author

Improving δ<sup>13</sup>C Measurement Accuracy of Off-Axis Integrated Cavity Output Spectroscopy with a Weighted Feedforward Neural Network.

Analytical chemistry·2026
Same author

Improving the classification performance of microplastics by noise reduction and baseline correction of Raman spectra with a neural network-based algorithm.

Optics express·2026
Same author

Single-sideband spectrally resolution-enhanced laser heterodyne spectrometer for upper atmospheric sensing.

Optics letters·2026
Same author

A Robust OB-QEPAS Sensor for In-Situ Detection of Dissolved Methane in Natural Waters.

Analytical chemistry·2026
Same author

Cascaded Improved Neural Network for the Reconstruction, Classification, and Unmixing of the Raman Spectra of Mixed Microplastics.

Analytical chemistry·2026
Same author

Real-time wavelength-calibrated laser heterodyne radiometer based on an all-fiber unbalanced Mach-Zehnder interferometer.

Optics express·2026

Related Experiment Video

Updated: Aug 10, 2025

Measuring Dissolved Methane in Aquatic Ecosystems Using An Optical Spectroscopy Gas Analyzer
05:00

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

Published on: July 26, 2024

550

Double-enhanced multipass cell-based wavelength modulation spectroscopy CH4 sensor for ecological applications.

Ruifeng Wang, Jie Peng, Yuan Cao

    Optics Express
    |February 14, 2023
    PubMed
    Summary
    This summary is machine-generated.

    A new methane (CH4) sensor uses advanced spectroscopy for precise soil respiration measurements. This innovative device achieves a low detection limit, enabling accurate environmental monitoring.

    More Related Videos

    Infrared Degenerate Four-wave Mixing with Upconversion Detection for Quantitative Gas Sensing
    10:42

    Infrared Degenerate Four-wave Mixing with Upconversion Detection for Quantitative Gas Sensing

    Published on: March 22, 2019

    6.3K
    Design and Use of a Full Flow Sampling System FFS for the Quantification of Methane Emissions
    08:18

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

    Published on: June 12, 2016

    16.8K

    Related Experiment Videos

    Last Updated: Aug 10, 2025

    Measuring Dissolved Methane in Aquatic Ecosystems Using An Optical Spectroscopy Gas Analyzer
    05:00

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

    Published on: July 26, 2024

    550
    Infrared Degenerate Four-wave Mixing with Upconversion Detection for Quantitative Gas Sensing
    10:42

    Infrared Degenerate Four-wave Mixing with Upconversion Detection for Quantitative Gas Sensing

    Published on: March 22, 2019

    6.3K
    Design and Use of a Full Flow Sampling System FFS for the Quantification of Methane Emissions
    08:18

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

    Published on: June 12, 2016

    16.8K

    Area of Science:

    • Environmental Science
    • Analytical Chemistry
    • Spectroscopy

    Background:

    • Soil respiration is a significant source of atmospheric methane (CH4), a potent greenhouse gas.
    • Accurate and sensitive CH4 measurement is crucial for understanding soil carbon cycling and climate change.
    • Existing CH4 measurement techniques may lack the sensitivity or portability required for field applications.

    Purpose of the Study:

    • To develop and validate a novel methane (CH4) sensor for precise soil respiration measurements.
    • To enhance sensor performance through advanced spectroscopic techniques and multipass cell design.
    • To assess the sensor's suitability for long-term environmental monitoring applications.

    Main Methods:

    • Wavelength modulation spectroscopy (WMS) coupled with a home-made double-enhanced Herriot-type multipass cell (73.926 m effective pathlength).
    • Utilized a fiber-coupled distributed feedback diode laser at 1653.74 nm.
    • Implemented techniques including enhanced optical pathlength, absorption line locking, laser intensity normalization, and temperature control.

    Main Results:

    • Achieved a minimum detection limit of 10 ppbv for CH4.
    • Demonstrated a measurement precision of 6.4 ppbv.
    • Successfully verified sensor performance through soil respiration measurements and atmospheric CH4 monitoring.

    Conclusions:

    • The developed CH4 sensor offers high sensitivity and precision for environmental applications.
    • The sensor is suitable for accurate measurement of soil respiration and atmospheric CH4.
    • This technology has significant potential for ecological research and climate change studies.