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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...
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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...
Microbial Biosensors01:17

Microbial Biosensors

Microbial biosensors are analytical devices that utilize living microbes to detect specific substances through measurable signals. These devices consist of two main components: biosensing organisms and signal-transducing elements. Biosensing organisms, such as Escherichia coli or Saccharomyces cerevisiae, are typically housed in multiwell plates connected to transducers, enabling rapid, real-time detection of target analytes.Signal Generation MechanismWhen a target analyte—such as...

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Related Experiment Video

Updated: Jul 24, 2026

Multi-analyte Biochip (MAB) Based on All-solid-state Ion-selective Electrodes (ASSISE) for Physiological Research
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Chemical sensors for space applications.

S L Bonting1

  • 1SETI Institute, NASA-Ames Research Center, Moffett Field, California.

Advances in Space Biology and Medicine
|January 1, 1992
PubMed
Summary

Chemical sensors enable efficient onboard analysis for space missions, reducing crew time and resource use. These sensors offer real-time monitoring for biomedical experiments and life support systems.

Area of Science:

  • Space Science
  • Analytical Chemistry
  • Biomedical Engineering

Background:

  • Space missions require extensive chemical analysis for biomedical experiments and life support systems.
  • Onboard analysis is crucial due to limited Space Shuttle logistics.
  • Conventional analytical instruments are unsuitable for spacecraft due to size, power, and crew time constraints.

Purpose of the Study:

  • To discuss the types and requirements of chemical sensors for space applications.
  • To highlight the advantages of chemical sensors over traditional methods for space missions.
  • To explore the potential of chemical sensors for real-time monitoring in space.

Main Methods:

  • Discussion of chemical sensor principles, including selectors and transducers.

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  • Review of sensor requirements for biomedical experimentation and water recycling.
  • Analysis of sensor advantages: miniaturization, low power, minimal sample preparation.

    • Main Results:

    • Chemical sensors offer selective and quantitative analyte measurement.
    • Sensors enable real-time or continuous monitoring of various analytes without separation.
    • Sensors are compact, require low power, and minimal sample treatment.

    Conclusions:

    • Chemical sensors are highly advantageous for onboard analysis in space.
    • They efficiently utilize scarce resources like crew time, space, and power.
    • Sensors facilitate rapid data transmission, supporting long-term space exploration and safety.