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Related Concept Videos

Volatilization01:10

Volatilization

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Volatilization gravimetry is an analytical technique that measures the mass lost due to the volatilization of the substance. This technique is used to estimate the amount of volatile material in a sample. To perform this method, heat a known amount of the sample to a high temperature in a crucible or other suitable vessel. The volatile substance in the sample evaporates, and the vapor is completely expelled from the crucible either by heating the sample or bubbling a stream of inert gas through...
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Gas Chromatography: Types of Detectors-II01:19

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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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Gas Chromatography: Types of Detectors-I01:21

Gas Chromatography: Types of Detectors-I

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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).
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Gas Chromatography: Overview of Detectors01:13

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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.
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High-Performance Liquid Chromatography: Types of Detectors01:15

High-Performance Liquid Chromatography: Types of Detectors

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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...
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MALDI-TOF Mass Spectrometry01:19

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Mass spectrometry is a powerful characterization technique that can identify and separate a wide variety of compounds ranging from chemical to biological entities, based on their mass-to-charge ratio (m/z). The instruments that allow this detection, known as mass spectrometers, have three components: an ion source, a mass analyzer, and a detector. These spectrometers differ based on the nature of their ion source and analyzers.Matrix-assisted laser desorption ionization (MALDI) is a commonly...
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Advances in volatile organic compound biomarker detection.

Mark Woollam1, Eray Schulz1, Mangilal Agarwal2

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Summary

Volatile organic compounds (VOCs) offer noninvasive biomarkers for disease detection across various samples. Volatilomics research advances technology and data analysis for early diagnosis and synthetic biomarkers.

Keywords:
Biomarker discoveryChemometricsClinical validationElectronic nose (e-Nose)Gas chromatography (GC)Mass spectrometry (MS)Volatile organic compounds (VOCs)

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Area of Science:

  • Biomedical Science
  • Analytical Chemistry
  • Biochemistry

Background:

  • Volatile organic compounds (VOCs) of biological origin are increasingly recognized as valuable noninvasive biomarkers.
  • Volatilomics, the study of VOCs, has evolved since the 1970s, focusing on identifying biomarkers for diseases like cancer, metabolic disorders, and infections.
  • VOCs can be detected in diverse biological samples, including breath, urine, blood, and sweat.

Purpose of the Study:

  • To review viable biological sample types for VOC analysis.
  • To highlight technological advancements in VOC sampling and analytical techniques.
  • To discuss data processing strategies and biomarker selection methods.

Main Methods:

  • Exploration of various biological sample matrices for VOC detection.
  • Review of recent technological innovations in sample collection and analytical instrumentation.
  • Analysis of sophisticated data processing algorithms and biomarker identification techniques.
  • Review of current research on VOC discovery for specific diseases and sample types.

Main Results:

  • Significant advancements in sampling and analytical technologies for VOC detection.
  • Development of sophisticated data processing strategies for high-confidence biomarker selection.
  • Review of state-of-the-art studies identifying VOC biomarkers for various diseases.
  • Progress in addressing challenges such as elucidating VOC origins and clinical validation.

Conclusions:

  • Volatilomics holds significant potential for noninvasive disease diagnosis and monitoring.
  • Technological and analytical advancements are crucial for realizing the clinical utility of VOC biomarkers.
  • Innovative approaches, including synthetic biomarkers, promise future applications in early and at-home disease detection.