The bioreactivity of the sub-10 μm component of volcanic ash: Soufrière Hills volcano, Montserrat.

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  • Author(s): Jones T;Jones T; Bérubé K
  • Source:
    Journal of hazardous materials [J Hazard Mater] 2011 Oct 30; Vol. 194, pp. 128-34. Date of Electronic Publication: 2011 Aug 05.
  • Publication Type:
    Journal Article
  • Language:
    English
  • Additional Information
    • Source:
      Publisher: Elsevier Country of Publication: Netherlands NLM ID: 9422688 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1873-3336 (Electronic) Linking ISSN: 03043894 NLM ISO Abbreviation: J Hazard Mater Subsets: MEDLINE
    • Publication Information:
      Original Publication: Amsterdam : Elsevier,
    • Subject Terms:
      Particle Size* ; Volcanic Eruptions*; Electrophoresis, Polyacrylamide Gel ; Microscopy, Electron, Scanning ; West Indies
    • Abstract:
      With the recent eruption of the Icelandic volcano Eyafallajökull and resulting ash cloud over much of Europe there was considerable concern about possible respiratory hazards. Volcanic ash can contain minerals that are known human respiratory health hazards such as cristobalite. Short-term ash exposures can cause skin sores, respiratory and ocular irritations and exacerbation of pre-existing lung conditions such as asthma. Long-term occupational level exposures to crystalline silicon dioxide can cause lung inflammation, oedema, fibrosis and cancer. The potential health effects would be dependent on factors including mineralogy, surface chemistry, size, and levels and duration of exposure. Bulk ash from the Soufrière Hills volcano was sourced and inhalable (<2.5 μm) ash samples prepared and physicochemically characterised. The fine ash samples were tested for bioreactivity by SDS-PAGE which determined the strength of binding between mineral grains and lung proteins. Selected proteins bound tightly to cristobalite, and bound loosely to other ash components. A positive correlation was seen between the amount of SiO(2) in the sample and the strength of the binding. The strength of binding is a function of the mineral's bioreactivity, and therefore, a potential geo-biomarker of respiratory risk.
      (Copyright © 2011 Elsevier B.V. All rights reserved.)
    • Publication Date:
      Date Created: 20110830 Date Completed: 20130306 Latest Revision: 20111017
    • Publication Date:
      20221213
    • Accession Number:
      10.1016/j.jhazmat.2011.07.092
    • Accession Number:
      21872393