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June 14, 2026Environmental Technology & InnovationOpen Access

Chlorine Radicals in the Environment: A Critical Review of Reactivity, Formation, and Reaction Across Aqueous and Atmospheric Compartments

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Authors

FYFei YangTianjin Chengjian UniversityWTWen TianTianjin Chengjian UniversityYBYuxin BianTianjin Chengjian University

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Overview

Critical review explores chlorine radicals’ sources, detection, and reactivity in water and air, suggesting pathways for improved environmental management.

Key Points

  • This review aims to integrate the formation pathways, detection techniques, and reaction mechanisms of chlorine radicals across aqueous and atmospheric environments.
  • Systematic review of chlorine radicals' sources such as photolysis and photocatalytic activation.
  • Evaluation of identification techniques including electron spin resonance and quenching experiments.
  • Examination of factors affecting reactivity like pH, oxidant dosage, and co-existing species.
  • Identified major formation pathways for chlorine radicals from various processes, including photolysis and sea-salt contributions.
  • Clarified dominant reaction mechanisms with organic contaminants, emphasizing the role of molecular structure and environmental conditions.
  • Highlighted knowledge gaps in current methods for in situ detection of transient chlorine radical intermediates.

Cite This Study

Yang et al. (2026) studied this question.

synapsesocial.com/papers/6a2e456cb1cc60ccdea8a75ehttps://doi.org/10.1016/j.eti.2026.105042
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  5. 5Laser Flash Photolysis of HCIO, CIO<sup>−</sup>, HBrO, and BrO<sup>−</sup> in Aqueous Solution. Reactions of Cl‐ and Br‐Atoms1985 · 277 citations