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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-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...
Raman Spectroscopy Instrumentation: Overview01:26

Raman Spectroscopy Instrumentation: Overview

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...
Atomic Emission Spectroscopy: Instrumentation01:22

Atomic Emission Spectroscopy: Instrumentation

The instrumentation of atomic emission spectrometry (AES) involves various components, including atomization devices that convert samples into gas-phase atoms and ions. There are two main types of atomization devices: continuous and discrete atomizers.  Continuous atomizers, like plasmas and flames, introduce samples in a constant stream, while discrete atomizers inject individual samples using syringes or autosamplers. The most common discrete atomizer is the electrothermal atomizer.
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.

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Related Experiment Video

Updated: Jul 3, 2026

In-situ Tapering of Chalcogenide Fiber for Mid-infrared Supercontinuum Generation
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All Single-Mode-Fiber Supercontinuum Source Setup for Monitoring of Multiple Gases Applications.

Javier A Martin-Vela1, Eloisa Gallegos-Arellano2, Juan M Sierra-Hernández1

  • 1Departamento de Ingenieria Electronica, Division de Ingenierias, Universidad de Guanajuato, Carretera Salamanca-Valle de Santiago km 3.5 + 1.8, Comunidad de Palo Blanco, Salamanca Gto. C.P. 36885, Mexico.

Sensors (Basel, Switzerland)
|June 11, 2020
PubMed
Summary
This summary is machine-generated.

A novel gas sensing system uses a single-mode-fiber supercontinuum source (SMF-SC) for simultaneous detection of water vapor and acetylene. This broadband absorption spectroscopy system demonstrates high sensitivity for acetylene detection.

Keywords:
absorption spectroscopybroadbandfiber optic measurementsfiber opticsgas sensingmultiple gasesreal-time monitoringsupercontinuum source

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Area of Science:

  • Optics and Photonics
  • Spectroscopy
  • Gas Sensing Technology

Background:

  • A gas sensing system utilizing a conventional absorption technique with a single-mode-fiber supercontinuum source (SMF-SC) is detailed.
  • The SMF-SC was generated by directing microchip laser pulses into a 1 km single-mode fiber, producing a stable, broad spectrum (350 nm bandwidth) from 1350 to 1700 nm.

Discussion:

  • The system simultaneously senses water vapor (1350-1420 nm) and acetylene (1510-1540 nm).
  • Acetylene absorption peaks reached ~30 dB depth with ~60 strong lines, indicating high sensitivity.
  • Experimental spectra were validated against Hitran database simulations.

Key Insights:

  • The SMF-SC enables broadband absorption spectroscopy for multiple gas detection.
  • The system exhibits high sensitivity for acetylene sensing.
  • Experimental results align with theoretical simulations, confirming system accuracy.

Outlook:

  • Potential for developing advanced sensors for broadband absorption spectroscopy.
  • Feasible as a cost-effective absorption spectrophotometer for multiple gases.
  • Further research could explore additional gas targets and optimize system performance.