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Related Experiment Video

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TD-DFT Guided Advanced E-Eye Sensing Technique for On-site Quantification of Fe, Cr, F, and As in the Environmental, Biological, and Food Samples
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A visual strip sensor for determination of iron.

Sanjukta A Kumar1, Neha Thakur1, Harshala J Parab1

  • 1Analytical Chemistry Division, BARC, Trombay, Mumbai 400085, India.

Analytica Chimica Acta
|December 3, 2014
PubMed
Summary

A novel visual strip sensor for iron (Fe) detection has been developed. This sensor accurately quantifies iron in water and juices, offering a simple yet effective method for environmental and food analysis.

Keywords:
1,10-PhenanthrolineAcrylamideGround waterIronPoly(propylene)Visual strip sensor

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Area of Science:

  • Analytical Chemistry
  • Materials Science
  • Environmental Science

Background:

  • Iron (Fe) is an essential element but elevated levels can indicate contamination.
  • Accurate and accessible methods for iron detection in various aqueous samples are crucial.

Purpose of the Study:

  • To develop a visual strip sensor for the rapid and sensitive detection of iron (Fe(II)).
  • To evaluate the sensor's performance in diverse aqueous matrices like natural water and fruit juices.

Main Methods:

  • Synthesis of a visual sensor strip via UV-radiation induced graft polymerization of acrylamide on a poly(propylene) base.
  • Immobilization of 1,10-phenanthroline as an iron-selective reagent within the polymer matrix.
  • Colorimetric analysis of Fe(II) interaction with the sensor strip, observing color change intensity.

Main Results:

  • The sensor strip exhibited an orange-red color change upon interaction with Fe(II).
  • Color intensity was directly proportional to Fe(II) concentration, enabling quantitative analysis.
  • Detection limits were 50 ng/mL (visual) and 20 ng/mL (spectrophotometric), with an overall detection limit of 1.0 ng/mL.
  • Successful application in analyzing iron content in groundwater and fruit juices.

Conclusions:

  • The developed visual strip sensor provides a sensitive and effective method for iron detection in aqueous samples.
  • This sensor offers a promising tool for on-site monitoring of iron levels in environmental and food applications.
  • The method combines simplicity with high sensitivity, making it suitable for various analytical needs.