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Application of Spectrophotometry for Analysis of Arsine Gas in Electrometallurgical Research

HENRI PALOMA¨KI, JARI AROMAA

2025enspectrophotometryarsineelectrometallurgicalcoppergas

Abstract

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Electrowinning is an essential process for removing impurities from copper electrorefining circuits, yet it poses the risk of generating toxic arsine gas when dissolved arsenic is present. This study aims to explore the formation of arsine gas and improve operational safety in industrial settings using laboratory-scale experiments. We paired the silver diethyldithiocarbamate (AgDDC) spectrophotometric method with electrochemical cells to effectively detect and quantify arsine gas. The methodology involved assessing the limits for arsine gas formation under various conditions. The results indicated that the method could reliably detect the onset of arsine gas evolution and perform semi-quantitative analysis when specific procedures are adhered to. However, for comprehensive quantitative assessments, further research is necessary to align conditions between standard and electrochemical measurements. This work highlights the potential of utilizing the AgDDC spectrophotometric approach for monitoring arsenic removal in hydrometallurgical processes, ultimately contributing to more sustainable practices in copper production.

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Cite This Work

@article{cb29d2fe-5266-47b4-8604-80466d25997a,
  title={Application of Spectrophotometry for Analysis of Arsine Gas in Electrometallurgical Research},
  author={HENRI PALOMA¨KI and JARI AROMAA},
  year={2025},
  language={en}
}
TY  - JOUR
TI  - Application of Spectrophotometry for Analysis of Arsine Gas in Electrometallurgical Research
AU  - HENRI PALOMA¨KI
AU  - JARI AROMAA
PY  - 2025
LA  - en
ER  -

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