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Asbestos in organochlorine insecticide powder sprinkled between pages of antiquarian books in a library in Japan. | LitMetric

AI Article Synopsis

  • University librarians aimed to assess their antiquarian book collection before renovations, discovering a foul-smelling powder between the pages.
  • The powder underwent extensive analysis using advanced techniques, revealing it mainly consisted of talc and contained benzene hexachloride (BHC) as well as 0.52 wt% asbestos from the tremolite-actinolite series.
  • This study marks the first documentation of asbestos in insecticides, indicating that the powder was likely used as a bulking agent for BHC.

Article Abstract

Librarians at a university had planned to check the collection prior to the library renovations that began in 2015. They had previous knowledge of the presence of a light greyish-white powder with an unpleasant odour (hereinafter referred to as 'powder') sprinkled between the pages of antiquarian books in the library archive. The purpose of this study was to identify this powder with the help of experts from both inside and outside the university. The powder was qualitatively analysed using gas chromatography with mass spectrometry after hexane extraction. The powder was examined under a polarised light microscope and a field-emission scanning electron microscope equipped with an energy-dispersive X-ray spectrometer. Benzene hexachloride (BHC) was detected in the powder. Talc was the most abundant particle in the powder. The powder also contained 0.52 wt% asbestos, which belonged to the tremolite-actinolite series. No other types of asbestos were detected. The powder was presumed to be a bulking agent for BHC, and its major constituent was talc. This is the first report on asbestos-containing insecticides.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11292307PMC
http://dx.doi.org/10.2486/indhealth.2023-0185DOI Listing

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