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Extractive Spectrophotometric Detection of Sn(II) Using 6-bromo-3-hydroxy-2-(5-methylfuran-2-yl)-4H-chromen-4-one.

Pankaj Bhatia1, Virender2, Harish Kumar Sharma2

  • 1Department of Chemistry, Kurukshetra University Kurukshetra, Kurukshetra, 136119, India. pankajbhatia457@gmail.com.

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|September 4, 2023
PubMed
Summary

This study introduces a new spectrophotometric method for detecting trace amounts of tin(II) using a BHMF ligand. The method is highly selective, sensitive, and reproducible, offering a valuable tool for tin analysis.

Keywords:
Beer-Lambert lawDetectionMetal ionsSpectroscopicTin(II)

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Area of Science:

  • Analytical Chemistry
  • Spectrophotometry
  • Trace Analysis

Background:

  • Accurate determination of tin(II) is crucial in various scientific and industrial applications.
  • Existing methods for tin(II) determination may lack sensitivity, selectivity, or simplicity.
  • There is a need for reliable and efficient analytical techniques for trace tin analysis.

Purpose of the Study:

  • To develop an extractive spectrophotometric method for the quantitative determination of tin(II) traces.
  • To utilize the complexation reaction between tin(II) and 6-bromo-3-hydroxy-2-(5-methylfuran-2-yl)-4H-chromen-4-one (BHMF) for detection.
  • To establish a sensitive, selective, and reproducible method for tin(II) analysis.

Main Methods:

  • Extractive spectrophotometry involving the formation of a yellow tin(II)-BHMF complex.
  • Complexation in a slightly acidic medium (HCl) with a 1:2 stoichiometry.
  • Spectrophotometric measurement of the complex's absorbance at 434 nm.

Main Results:

  • The method demonstrated a linear Beer's range of 0-1.3 μg Sn mL⁻¹.
  • High molar absorptivity (9.291 × 10⁴ L mol⁻¹ cm⁻¹) and sensitivity were achieved.
  • The method showed excellent selectivity, free from interferences from various metal ions, anions, and complexing agents.
  • The tin(II)-BHMF complex was stable for at least two days.

Conclusions:

  • The developed extractive spectrophotometric method is simple, highly selective, sensitive, and reproducible for tin(II) determination.
  • The method was successfully applied to analyze synthetic and gunmetal alloy samples, with results in good agreement with certified values.
  • This procedure offers a valuable alternative due to the scarcity of superior methods for trace tin(II) analysis.