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Related Concept Videos

Gas Chromatography: Types of Detectors-II01:19

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...
Gas Chromatography–Mass Spectrometry (GC–MS)01:14

Gas Chromatography–Mass Spectrometry (GC–MS)

Gas chromatography–mass spectrometry (GC–MS) is the combination of analytical techniques of gas chromatography and mass spectrometry in a single instrument for analyzing a mixture of compounds. The gas chromatograph separates the compounds in the mixture, and the mass spectrometer analyzes each compound separately to determine the molecular masses and molecular structures.
A gas chromatograph consists of a long, narrow capillary column with a polysiloxane coating on the inner wall. The coating...
Gas Chromatography: Overview of Detectors01:13

Gas Chromatography: Overview of Detectors

Detectors in gas chromatography (GC) help identify and quantify the components of a mixture by translating chemical properties into measurable signals, which are displayed on a chromatogram. Detectors can be categorized into two main types: destructive and non-destructive.
A non-destructive detector allows a sample to be analyzed without altering or consuming it, meaning the sample can be collected after detection for further analysis. Examples include thermal conductivity detectors and...
Gas Chromatography: Types of Detectors-I01:21

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,...
Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation01:26

Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation

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.
Mass Analyzers: Common Types01:19

Mass Analyzers: Common Types

The quadrupole mass analyzer consists of four cylindrical metal rods arranged in a diamond carrying a DC voltage and a radio-frequency AC voltage. The motion of ions through the quadrupole depends on the field strength, causing only ions of a certain m/z to resonate successfully and strike the detector at a given field strength. Though the transmission rate for these analyzers is high, the exact elemental composition of the sample is not determined because of low resolution; however, they are...

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Updated: Jun 9, 2026

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

A high-performance, portable, field-deployable gas analyzer.

Mark B McKinnon1, Ian Brady1

  • 1UL Research Institutes, Fire Safety Research Institute, Columbia, MD, United States.

Hardwarex
|June 8, 2026
PubMed
Summary
This summary is machine-generated.

A new portable gas sensor module simplifies field measurements of fire dynamics by integrating oxygen, carbon dioxide, and carbon monoxide sensors. This design reduces infrastructure needs and proprietary hardware reliance for enhanced fire research.

Keywords:
ChemistryCombustionField testingFire testingGas analyzer

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Area of Science:

  • Fire Science
  • Combustion Research
  • Environmental Monitoring

Background:

  • Accurate gas concentration measurements are crucial for understanding fire dynamics and combustion processes in large-scale experiments.
  • Field experiments present logistical challenges for data collection on gas composition at multiple locations.
  • Existing methods may rely on complex infrastructure and proprietary systems, limiting accessibility and flexibility.

Purpose of the Study:

  • To develop a simplified, high-fidelity gas sensor module for field measurements in fire experiments.
  • To improve portability and reduce infrastructure requirements for gas composition analysis.
  • To eliminate reliance on proprietary hardware and software in fire research instrumentation.

Main Methods:

  • Integrated paramagnetic oxygen sensor, non-dispersive infrared (NDIR) carbon dioxide sensor, and NDIR carbon monoxide detector.
  • Designed a compact, single-unit sensor module in a small form-factor carrying case.
  • Utilized a single cable for both power and data communication, simplifying field setup.

Main Results:

  • The developed sensor module offers portability and reduced infrastructure needs for gas concentration measurements.
  • The design successfully integrates multiple gas sensors into a single, user-friendly unit.
  • Characterization data confirms the module's performance for field applications.

Conclusions:

  • The novel gas sensor module significantly simplifies high-fidelity field measurements of gas concentrations during fire experiments.
  • This portable, integrated system enhances accessibility and reduces logistical complexity in fire dynamics research.
  • Open-source design files and processing scripts facilitate wider adoption and further development in the scientific community.