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Flame Photometry: Overview01:02

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Flame photometry, also known as flame emission spectrometry, is a technique used for the qualitative and quantitative analysis of elements present in a sample using a flame as the source of excitation energy. The concept of flame photometry was realized in the early 1860s by Kirchhoff and Bunsen, who discovered that specific elements emit characteristic radiation when excited in flames. The first instrument developed for this purpose was used to measure sodium (Na) in plant ash using a Bunsen...
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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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In a flame photometer, when a solution like potassium chloride is aspirated into the flame, the solvent evaporates, leaving behind dehydrated salt. This salt dissociates into free gaseous atoms in their ground state. Some of these atoms absorb energy from the flame, leading to their excitation. The excited atoms return to the ground state, emitting photons at characteristic wavelengths. Because only electronic transitions are involved, the resulting emission lines are very narrow. The intensity...
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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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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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Development and Functionalization of Electrolyte-Gated Graphene Field-Effect Transistor for Biomarker Detection
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Graphene based multifunctional flame sensor.

Darim B Ferry1, R Pavan Kumar, Siva K Reddy

  • 1Department of Instrumentation and Applied Physics, Indian Institute of Science Bangalore, Karnataka 560012, India.

Nanotechnology
|April 23, 2015
PubMed
Summary

A novel graphene-based flame sensor utilizes differential heat transfer to detect flames. This tunable system offers a scalable method for versatile flame detection, adaptable to various flame types.

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Area of Science:

  • Materials Science
  • Sensor Technology
  • Nanotechnology

Background:

  • Graphene's unique electrical, thermal, and high surface area properties make it an ideal sensing material.
  • Flame detection sensors are crucial for safety and industrial applications.

Purpose of the Study:

  • To develop a novel graphene-based flame sensor utilizing differential heat transfer mechanisms.
  • To create a tunable and scalable flame detection system adaptable to various flame types.

Main Methods:

  • Exploiting the response of few-layer graphene to flame along two different directions.
  • Developing a complete sensor module with signal conditioning and a microcontroller-based flame detection algorithm.
  • Implementing a tunable threshold for sensor calibration based on flame characteristics.

Main Results:

  • Demonstrated a novel configuration for graphene-based flame sensing.
  • Developed a functional sensor module with baseline drift compensation.
  • Achieved tunable flame detection adaptable to different flame types.

Conclusions:

  • The developed graphene-based sensor offers a novel and scalable approach for versatile flame detection.
  • The system's adaptability to various flame types presents significant potential for safety and industrial applications.
  • This work opens avenues for modifying complex sensing schemes using graphene.