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

Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation01:26

Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation

919
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....
919
Spectrophotometry: Introduction01:16

Spectrophotometry: Introduction

11.0K
Spectrophotometry is the quantitative measurement of the absorption, reflection, diffraction, or transmission of electromagnetic radiation through a material as a function of the intensity and wavelength of the radiation. A spectrophotometer is a device used to measure the change in the radiation intensity caused by its interaction with the material.
The essential components of a spectrophotometer include a source of electromagnetic radiation, a slot for placing a material to be analyzed, and a...
11.0K
UV–Vis Spectrometers01:14

UV–Vis Spectrometers

4.3K
The absorbance of UV and visible (UV–visible) radiations is measured using a UV–visible spectrophotometer. Deuterium lamps, which emit UV radiation, and tungsten lamps, which produce radiation in the visible region, are used as light sources in UV–visible spectrophotometers. A monochromator or prism is used for diffraction grating, i.e., to split the incoming radiation into different wavelengths. A system of slits is used to focus the desired wavelength on the sample cell.
4.3K
Raman Spectroscopy Instrumentation: Overview01:26

Raman Spectroscopy Instrumentation: Overview

1.6K
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...
1.6K
Tandem Mass Spectrometry01:21

Tandem Mass Spectrometry

2.8K
Tandem mass spectrometry is a technique that uses multiple mass analyzers in series to obtain a higher selectivity and reduce chemical noise during analyte detection. Instruments with multiple analyzers separated by an interaction cell enable secondary fragmentation and selected study of the fragment ions.Secondary fragmentations occur in the interaction cell and can be induced by various factors. Fragmentation induced by collision with inert gases, such as N2, Ar, He, etc., is called...
2.8K
Ultraviolet and Visible (UV–Vis) Spectroscopy: Overview01:02

Ultraviolet and Visible (UV–Vis) Spectroscopy: Overview

8.4K
Ultraviolet–visible (UV–visible or UV–Vis) spectroscopy is an analytical technique that investigates the interaction between matter and UV–Vis light within the electromagnetic spectrum. This method is widely used for its versatility, simplicity, and relatively quick data acquisition, making it valuable for both qualitative and quantitative analysis. When UV–Vis radiation passes through a material,  molecules absorb light depending on the energy required for...
8.4K

You might also read

Related Articles

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

Sort by
Same author

Germinal Center-Like Tertiary Lymphoid Structures Mark Immune Responsiveness and Enable Checkpoint Immunotherapy in Bladder Cancer.

Oncology research·2026
Same author

Tumor-infiltrating clonal hematopoiesis is associated with adverse clinical outcomes in diffuse large B-cell lymphoma.

Blood cancer discovery·2026
Same author

Ultra-sensitive urine DNA methylation test enables early and accurate detection of bladder cancer.

Epigenomics·2026
Same author

Correction: mTORC1/S6K1 signaling promotes sustained oncogenic translation through modulating CRL3<sup>IBTK</sup>-mediated ubiquitination of eIF4A1 in cancer cells.

eLife·2026
Same author

A NEK2/ZWINT-NDC80 regulatory axis drives bladder cancer progression and chemoresistance.

Discover oncology·2026
Same author

Tumour-Derived Extracellular Vesicles Induce Diffuse Large B-Cell Lymphoma Progression Through Macrophage-Mediated MDSC Accumulation.

Journal of extracellular vesicles·2026

Related Experiment Video

Updated: Mar 15, 2026

A Multimodal Wide-Field Fourier-Transform Raman Microscope
06:48

A Multimodal Wide-Field Fourier-Transform Raman Microscope

Published on: December 30, 2025

657

Algorithm for the Simultaneous Measurement of Multiple Parameters Based on Wavelength Modulation Spectroscopy.

Xiangyu Zhong1, Qing Shi1, Buqiang Zhang1

  • 1Beijing Research Institute of Telemetry, Beijing 100076, China.

Sensors (Basel, Switzerland)
|March 14, 2026
PubMed
Summary
This summary is machine-generated.

This study introduces a new algorithm using tunable diode laser absorption spectroscopy (TDLAS) for simultaneous monitoring of gas concentrations, temperature, and pressure in confined spaces, enhancing safety.

Keywords:
TDLASconfined spacemulti-parametersimultaneous measurement

More Related Videos

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping
09:43

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

Published on: March 20, 2017

10.4K
Multiplex Chemical Imaging Based on Broadband Stimulated Raman Scattering Microscopy
09:57

Multiplex Chemical Imaging Based on Broadband Stimulated Raman Scattering Microscopy

Published on: July 25, 2022

4.7K

Related Experiment Videos

Last Updated: Mar 15, 2026

A Multimodal Wide-Field Fourier-Transform Raman Microscope
06:48

A Multimodal Wide-Field Fourier-Transform Raman Microscope

Published on: December 30, 2025

657
Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping
09:43

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

Published on: March 20, 2017

10.4K
Multiplex Chemical Imaging Based on Broadband Stimulated Raman Scattering Microscopy
09:57

Multiplex Chemical Imaging Based on Broadband Stimulated Raman Scattering Microscopy

Published on: July 25, 2022

4.7K

Area of Science:

  • Analytical Chemistry
  • Spectroscopy
  • Environmental Monitoring

Background:

  • Personnel safety in confined spaces necessitates monitoring of temperature, pressure, and gas concentrations.
  • Accurate real-time data is crucial for preventing accidents and ensuring safe working conditions.

Purpose of the Study:

  • To develop and validate a multi-parameter simultaneous inversion algorithm for confined space monitoring.
  • To leverage Tunable Diode Laser Absorption Spectroscopy (TDLAS) for comprehensive environmental sensing.

Main Methods:

  • Utilized a multi-parameter simultaneous inversion algorithm integrating Levenberg-Marquardt (L-M) fitting.
  • Employed single-line thermometry, manometry, spectral separation, and alternating iteration techniques.
  • Incorporated an adaptive feedback mechanism to improve convergence stability.

Main Results:

  • Successfully achieved simultaneous inversion of H₂O, CO₂, CO, and O₂ concentrations.
  • Accurately determined temperature and pressure alongside gas compositions.
  • Simulation results confirmed that measurement accuracy meets practical requirements.

Conclusions:

  • The proposed TDLAS-based algorithm offers an effective method for multi-parameter detection in confined spaces.
  • This technology provides a foundation for expanding TDLAS applications in various environments.
  • Enhanced safety and accident prevention are key benefits of this monitoring approach.