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Abstract <p>Metrological characteristics of the atomic absorption determination of gold in solutions of various compositions with high concentrations of salts and acids obtained during experiments to study gold transport modes in high-temperature hydrothermal fluids were studied. Conditions for flame determination of Au were optimized, and the influences of composition, acid concentration, and temperature of experimental solutions, as well as methods for their accounting, were studied. The use of an acetylene-depleted air-acetylene flame allowed for a two-fold increase in the element determination sensitivity. The feasibility of using flame atomization atomic absorption spectroscopy for the determination of gold in sulfur-containing hydrothermal solutions with salt concentrations up to 100 g/L over a wide range of Au concentrations from 0.05 to 500 μg/g without preliminary separation of matrix from a limited sample volume is demonstrated.</p>

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Improvement of Metrological Characteristics of Atomic Absorption Determination of Gold in Complex Salt Systems

  • 期刊论文

  • 发表日期：

    2026年5月18日

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  • I. Yu. Zlivko,
  • V. A. Volchenkova,
  • N. A. Andreeva,
  • D. B. Petrenko,
  • I. Yu. Nikolaeva,
  • M. E. Tarnopolskaya,
  • A. V. Kolokolova,
  • L. V. Koroleva,
  • V. L. Reukov

摘要

Abstract

Metrological characteristics of the atomic absorption determination of gold in solutions of various compositions with high concentrations of salts and acids obtained during experiments to study gold transport modes in high-temperature hydrothermal fluids were studied. Conditions for flame determination of Au were optimized, and the influences of composition, acid concentration, and temperature of experimental solutions, as well as methods for their accounting, were studied. The use of an acetylene-depleted air-acetylene flame allowed for a two-fold increase in the element determination sensitivity. The feasibility of using flame atomization atomic absorption spectroscopy for the determination of gold in sulfur-containing hydrothermal solutions with salt concentrations up to 100 g/L over a wide range of Au concentrations from 0.05 to 500 μg/g without preliminary separation of matrix from a limited sample volume is demonstrated.