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Micellar mediated trace level quantification through the ring opening process.

Malingappa Pandurangappa1, Kempahanumakkagari Suresh Kumar1

  • 1Department of Studies in Chemistry, Bangalore University, Central College Campus, Dr Ambedkar Veedhi, Bangalore, 5600 01, India. mprangachem@gmail.com.

Analytical Methods : Advancing Methods and Applications
|September 17, 2020
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Summary
This summary is machine-generated.

This study introduces a new method for detecting trace mercury in industrial wastewater using rhodamine B hydrazide. The technique offers a sensitive and reliable way to monitor mercury pollution.

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Area of Science:

  • Analytical Chemistry
  • Environmental Chemistry
  • Spectrophotometry

Background:

  • Mercury contamination in industrial effluent poses significant environmental and health risks.
  • Accurate and sensitive detection methods are crucial for effective environmental monitoring.
  • Existing methods may lack the sensitivity or efficiency required for trace-level analysis.

Purpose of the Study:

  • To develop a micellar-mediated method for trace mercury estimation in industrial effluent.
  • To utilize the spirolactam ring opening of rhodamine B hydrazide for mercury detection.
  • To optimize extraction and detection parameters for enhanced sensitivity and reliability.

Main Methods:

  • A catalytic reaction between mercuric ion and rhodamine B hydrazide forms colored rhodamine B.
  • Cloud point extraction using Triton X-114 for preconcentration of the dye.
  • Spectrophotometric measurement of extracted dye absorbance at 556 nm.
  • Optimization of reagent concentrations, pH, and salt effects.

Main Results:

  • The method demonstrated a limit of detection of 1.4 ng/mL and a linear range of 10-100 ng/mL.
  • High selectivity for mercury was observed in the presence of various interfering ions.
  • Recovery studies on spiked real samples confirmed the method's validity.
  • Preconcentration and enrichment factors of 5 and 12 were achieved, respectively.

Conclusions:

  • The proposed micellar-mediated spectrophotometric method is effective for trace mercury determination in industrial effluent.
  • The method offers high sensitivity, selectivity, and reliability, comparable to standard techniques.
  • This approach provides a valuable tool for environmental monitoring of mercury pollution.