Chemical Review and Letters

Spectroscopic determination of mercury(II) with dimercaptophenols in the presence of hydrophobic amines

Document Type : Research Article

Authors

Kerim Avaz Kuliyev 1
S. G. Aliyev 2

1 Department of Chemistry, Azerbaijan State Pedagogical University, Baku, Azerbaijan

2 Azerbaijan State University of Oil and Industry, Baku, Azerbaijan.

https://doi.org/10.22034/crl.2025.530343.1633
Abstract
The extraction of mercury (II) ions from solutions of dimercaptophenolates in chloroform in the presence of hydrophobic amines was studied. Optimum conditions for mercury extraction, pH1/2 parameter and composition of extracted complexes are determined. The following dimercaptophenols (DP) are used: 2,6-dimercaptophenol (DMP), 2,6-dimercapto-4-methylphenol (DMP), 2,6-dimercapto-4-propylphenol (DMPP), 2,6-dimercapto-4-isopropylphenol (DMIPP) and 2,6-dimercapto-4-second-butylphenol (DMSBP). Among the hydrophobic amines used were aniline, N-methylaniline and N,N-dimethylaniline. Among the studied amines, N,N-dimethylaniline has the best extraction ability. It is established that ionic associates are formed in a slightly acidic medium (рНоpt 2.9-4.5). Maximums in light absorption spectra are observed at λ=458-472 nm. The molar coefficient of light absorption is equal to ε = (2.82-3.75)∙104. Based on the obtained data, extraction-spectrophotometric methods for determining mercury in beef liver, cheese, beef meat, fish and wheat were developed.

Graphical Abstract

Spectroscopic determination of mercury(II) with dimercaptophenols in the presence of hydrophobic amines

Keywords

mercury
hydrophobic amines
extraction-photometric method
determination

Subjects

Chemical Review and Letters
Volume 8, Issue 6 - Serial Number 6
November and December 2025
Pages 1200-1210

  • Receive Date 14 June 2025
  • Revise Date 14 July 2025
  • Accept Date 19 August 2025

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