Physicochemical hazard assessment of ash and dome rock from the 2021 eruption of La Soufriere St Vincent for the assessment of respiratory impacts and water contamination

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dc.citation.volume539
dc.contributor.authorHorwell CJ
dc.contributor.authorDamby DE
dc.contributor.authorStewart C
dc.contributor.authorJoseph EP
dc.contributor.authorBarclay J
dc.contributor.authorDavies BV
dc.contributor.authorMangler MF
dc.contributor.authorMarvin LG
dc.contributor.authorNajorka J
dc.contributor.authorPeek S
dc.contributor.authorTunstall N
dc.date.accessioned2024-06-05T01:14:21Z
dc.date.available2024-06-05T01:14:21Z
dc.date.issued2024-01-05
dc.description.abstractLa Soufrière, St Vincent, began an extrusive eruption on 27 December 2020. The lava dome was destroyed, along with much of the pre-existing 1979 dome, in explosive eruptions from 9 to 22 April 2021. Lava domes generate crystalline silica – inhalation of which can cause silicosis in occupational settings – which can become hazardous when dome material is incorporated into volcanic ash. La Soufrière ash (17 samples) was analysed, according to IVHHN protocols, to rapidly quantify crystalline silica and test for other health-relevant properties. The basaltic andesitic ash contained <5 wt% crystalline silica, which agrees with previous analyses of ash of similar compositions and mirrors the low quantities measured in dome samples (2 area %). It contained substantial inhalable material (7–21 vol% <10 µm). Few fibre-like particles were observed, reducing concern about particle shape. Leaching assays found low concentrations of potentially toxic elements, which indicates low potential to impact health, contaminate drinking-water sources or harm grazing animals through ingestion. Collectively, these data indicate that the primary health concern from this eruption was the potential for fine-grained ash to increase ambient particulate matter, an environmental risk factor for respiratory and cardiovascular morbidity and mortality. Precautionary measures were advised to minimize exposure.
dc.description.confidentialfalse
dc.format.pagination311-329
dc.identifier.citationHorwell CJ, Damby DE, Stewart C, Joseph EP, Barclay J, Davies BV, Mangler MF, Marvin LG, Najorka J, Peek S, Tunstall N. (2024). Physicochemical hazard assessment of ash and dome rock from the 2021 eruption of La Soufrière, St Vincent, for the assessment of respiratory health impacts and water contamination. Geological Society Special Publication. 539. (pp. 311-329).
dc.identifier.doi10.1144/SP539-2023-46
dc.identifier.eissn2041-4927
dc.identifier.elements-typejournal-article
dc.identifier.issn0305-8719
dc.identifier.urihttps://mro.massey.ac.nz/handle/10179/69725
dc.languageEnglish
dc.publisherGeological Society of London
dc.publisher.urihttps://www.lyellcollection.org/doi/full/10.1144/SP539-2023-46
dc.relation.isPartOfGeological Society Special Publication
dc.rights(c) The author/sen
dc.rights.licenseCC BY 4.0en
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/en
dc.titlePhysicochemical hazard assessment of ash and dome rock from the 2021 eruption of La Soufriere St Vincent for the assessment of respiratory impacts and water contamination
dc.typeJournal article
pubs.elements-id459999
pubs.organisational-groupCollege of Health
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