Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Gas Chromatography: Types of Detectors-II

Gas Chromatography: Types of Detectors-II

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...

High-Performance Liquid Chromatography: Types of Detectors

High-Performance Liquid Chromatography: Types of Detectors

The role of the detectors in High-Performance Liquid Chromatography (HPLC) is to analyze the solutes as they exit from the chromatographic column. The detector recognizes the solute's property and generates corresponding electrical signals, which are converted into a readable graph of the detector's response versus elution time called a chromatogram at the computer. There are several types of HPLC detectors, each with its own advantages and limitations, depending on the analyte properties and...

Gas Chromatography: Types of Detectors-I

Gas Chromatography: Types of Detectors-I

There are different types of detectors used in gas chromatography, each with its own specific properties that make it suitable for detecting certain types of analytes. The most commonly used detectors in GC are thermal conductivity detector (TCD), flame ionization detector (FID), and electron capture detector (ECD).
TCD is the earliest and most widely used detector that operates by measuring the changes in the thermal conductivity of the carrier gas. When a sample compound enters the detector,...

You might also read

Related Articles

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

Sort by

Same author

Fluid infusion during postpartum hemorrhage: a secondary analysis of the Obstetric Bleeding Study (OBS) Plus prospective observational study.

International journal of obstetric anesthesia·2026

Same author

A qualitative exploration of cAregiver experienCes Of conseRvatively maNaged kidney failure: the ACORN study.

BMC nephrology·2025

Same author

Effectiveness of interventions for informal caregivers of people with end-stage chronic illness: a systematic review.

Systematic reviews·2024

Same author

Use of multiple pharmacodynamic measures to deconstruct the Nix-TB regimen in a short-course murine model of tuberculosis.

Antimicrobial agents and chemotherapy·2024

Same author

Effect of woodchip bedding during wet conditions on feedlot cattle productivity, behaviour and relative adrenal gland weight.

Animal : an international journal of animal bioscience·2023

Same author

Use of Multiple Pharmacodynamic Measures to Deconstruct the Nix-TB Regimen in a Short-Course Murine Model of Tuberculosis.

bioRxiv : the preprint server for biology·2023

Search research articles

Related Experiment Video

Updated: Jun 16, 2026

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

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

Published on: March 22, 2019

High sensitivity pollution detection employing tunable diode lasers.

J Reid, J Shewchun, B K Garside

|February 23, 2010

Summary

This summary is machine-generated.

This study introduces a laser absorption spectrometer for detecting sulfur dioxide (SO2) at low parts-per-billion (ppb) levels. The advanced system also monitors multiple atmospheric pollutants simultaneously, enhancing air quality analysis.

More Related Videos

Multicolor Fluorescence Detection for Droplet Microfluidics Using Optical Fibers

Multicolor Fluorescence Detection for Droplet Microfluidics Using Optical Fibers

Published on: May 5, 2016

Design and Characterization Methodology for Efficient Wide Range Tunable MEMS Filters

Design and Characterization Methodology for Efficient Wide Range Tunable MEMS Filters

Published on: February 4, 2018

Related Experiment Videos

Last Updated: Jun 16, 2026

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

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

Published on: March 22, 2019

Multicolor Fluorescence Detection for Droplet Microfluidics Using Optical Fibers

Multicolor Fluorescence Detection for Droplet Microfluidics Using Optical Fibers

Published on: May 5, 2016

Design and Characterization Methodology for Efficient Wide Range Tunable MEMS Filters

Design and Characterization Methodology for Efficient Wide Range Tunable MEMS Filters

Published on: February 4, 2018

Area of Science:

Environmental Science
Analytical Chemistry
Spectroscopy

Background:

Sulfur dioxide (SO2) is a key air pollutant with significant environmental and health impacts.
Accurate and sensitive detection of SO2 and other atmospheric gases is crucial for pollution monitoring.

Purpose of the Study:

To develop and describe a novel laser absorption spectrometer for measuring low concentrations of SO2.
To detail the modulation techniques and calibration procedures for high-sensitivity gas detection.
To assess the instrument's capability for simultaneous monitoring of multiple atmospheric pollutants.

Main Methods:

Utilized a wavelength-tunable lead tin selenide (Pb(1-x)Sn(x)Se) diode laser.
Employed a multipass White cell for extended optical path length.
Implemented advanced modulation techniques for signal detection to achieve high sensitivity (absorption coefficients as low as 10⁻⁷ m⁻¹).

Main Results:

Successfully measured SO2 concentrations in the low parts-per-billion (ppb) range.
Demonstrated the capability to simultaneously detect multiple significant atmospheric gases including O3, N2O, CO2, H2O, NH3, and PAN.
Indicated potential for monitoring nearly all atmospherically relevant gases with the addition of a second diode.

Conclusions:

The developed laser absorption spectrometer offers a sensitive and versatile tool for air pollution monitoring.
The instrumentation enables simultaneous measurement of various gases, improving the comprehensive analysis of atmospheric composition.
The system's sensitivity allows for detection of many gases at sub-ppb levels, crucial for understanding trace gas dynamics.