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Types of Toxins01:36

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Humans continually engage with an environment rich in potentially harmful chemicals. These are introduced to our bodies through inhalation, ingestion, or skin contact. These chemicals exist in various forms, such as air and environmental pollutants, agricultural chemicals, organic solvents, and heavy metals.
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Dioxins and Dioxin-Like Compounds: Current Challenges in Sensing and Future Perspectives.

Imran Muhammad1, Tie-Zhen Ren1

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|November 24, 2025
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Summary

Highly toxic dioxins (PCDDs/PCDFs) persist in the environment, necessitating rapid detection. Cyclodextrin-based optical sensors offer a promising, sensitive, and selective solution for monitoring these persistent organic pollutants.

Keywords:
Cyclodextrindioxinenvironmental matriceshost-guest interactionsensor

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Area of Science:

  • Environmental Chemistry
  • Analytical Chemistry
  • Sensor Technology

Background:

  • Polychlorinated dibenzo-p-dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs) are highly toxic persistent organic pollutants.
  • Despite emission reductions, concerning concentrations persist in air, water, and soil, posing public health risks.
  • Current detection methods like GC-MS and HRMS are costly, complex, and lack optimal selectivity.

Purpose of the Study:

  • To address the urgent need for sensitive, selective, and rapid detection strategies for trace-level dioxin contamination.
  • To explore the potential of cyclodextrin (CD)-based sensing platforms for dioxin detection.
  • To bridge the gap in experimental CD-based optical sensors for dioxins.

Main Methods:

  • Review of conventional analytical techniques for dioxin detection.
  • Evaluation of cyclodextrin properties for selective molecular binding of lipophilic pollutants.
  • Identification of the lack of experimental CD-based fluorescent or colorimetric systems for dioxins.

Main Results:

  • Conventional methods for dioxin detection face limitations in cost, complexity, stability, and selectivity.
  • Cyclodextrins' hydrophobic cavities are conceptually suitable for binding lipophilic dioxins.
  • No experimental CD-based fluorescent or colorimetric sensors for dioxins have been reported.

Conclusions:

  • There is a critical gap in developing experimental CD-based optical sensors for dioxin detection.
  • CD-derived optical sensors represent a potential next-generation platform for sensitive, selective, and rapid dioxin monitoring.
  • Further research into CD-based optical sensing is warranted for effective environmental monitoring.