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Related Concept Videos

Flame Photometry: Overview01:02

Flame Photometry: Overview

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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Fast reactions occurring in times shorter than the time needed to mix reactants pose a unique challenge for investigation. In a liquid-phase continuous-flow system, reactants A and B are swiftly pushed into the mixing chamber, where mixing occurs within 1 ms. The reaction mixture then flows through an observation tube, and one measures light absorption to determine species concentrations at various points of the tube. This method is most appropriate when relatively large volumes of reactants...
Flame Photometry: Lab01:16

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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...
Controlled-Current Coulometry: Overview01:27

Controlled-Current Coulometry: Overview

Controlled current coulometry, also known as amperostatic coulometry, is a technique used in electrochemical analysis to measure the quantity of a substance through the controlled passage of current. It involves the application of a constant current to an electrochemical cell containing the analyte of interest. As the current flows through the cell, the analyte undergoes a redox reaction at the electrode surface, resulting in a charge transfer. By monitoring the time required for a certain...
Spectrophotometry: Introduction01:16

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A Modular Microfluidic Technology for Systematic Studies of Colloidal Semiconductor Nanocrystals
09:58

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Published on: May 10, 2018

Development of a photometric system for continuous flow analysis.

S S Randhawa1, Baban K S Bansod, Anirudh K Singh

  • 1Central Scientific Instruments Organisation, Chandigarh 160030, India. ss_randhawa1@rediffmail.com

Journal of Automated Methods & Management in Chemistry
|October 18, 2008
PubMed
Summary
This summary is machine-generated.

This study presents an improved photometric system for clinical laboratory chemical analyses. The new system utilizes a microcontroller for enhanced absorbance measurement, offering better precision and linearity.

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Area of Science:

  • Clinical chemistry
  • Analytical instrumentation
  • Photometry

Background:

  • Colorimetric methods are standard for clinical laboratory chemical analyses.
  • Existing photometric systems may have limitations in precision and linearity.

Purpose of the Study:

  • To describe an improved photometric system for clinical chemical analysis.
  • To evaluate the performance characteristics of the novel instrument.

Main Methods:

  • Development of a photometric system using a tungsten lamp, photo-diode detector, and 8051 microcontroller.
  • Investigation of photometric linearity, precision, and instrumental drift.

Main Results:

  • The improved system demonstrates specific performance characteristics.
  • Detailed analysis of linearity, precision, and drift was conducted.

Conclusions:

  • The developed photometric system offers advancements for clinical chemical analysis.
  • The instrument's performance metrics indicate its suitability for laboratory applications.