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<p>The presence of pesticide residues in cultural heritage collections poses health risks to museum professionals, making mitigation essential. This study evaluates gamma radiation as a decontamination strategy through two complementary experiments. Standard solutions of organochlorine pesticides (dichlorodiphenyltrichloroethane, hexachlorobenzene, and lindane) were irradiated to assess degradation, while model materials (cotton, wood, vegetable fiber, and feathers) were artificially contaminated and irradiated with 30&#xa0;kGy. Analyses by gas chromatography–mass spectrometry, Fourier-transform infrared spectroscopy, colorimetry, and scanning electron microscopy demonstrated pesticide degradation without significant chemical, chromatic, or structural alterations, highlighting ionizing radiation as a promising method for decontaminating cultural heritage materials.</p> Graphical Abstract <p></p>

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Gamma irradiation-induced degradation of organochlorine pesticides: groundwork for applications in cultural heritage materials

  • 期刊论文

  • 发表日期：

    2026年1月8日

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  • Ana Carolina Delgado Vieira,
  • Pablo A. S. Vasquez,
  • Maria José Alves de Oliveira,
  • Marcio Nardelli Wandermuren,
  • Joyce Cristale

摘要

The presence of pesticide residues in cultural heritage collections poses health risks to museum professionals, making mitigation essential. This study evaluates gamma radiation as a decontamination strategy through two complementary experiments. Standard solutions of organochlorine pesticides (dichlorodiphenyltrichloroethane, hexachlorobenzene, and lindane) were irradiated to assess degradation, while model materials (cotton, wood, vegetable fiber, and feathers) were artificially contaminated and irradiated with 30 kGy. Analyses by gas chromatography–mass spectrometry, Fourier-transform infrared spectroscopy, colorimetry, and scanning electron microscopy demonstrated pesticide degradation without significant chemical, chromatic, or structural alterations, highlighting ionizing radiation as a promising method for decontaminating cultural heritage materials.

Graphical Abstract