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High levels of isocyanic acid in smoke generated during hot iron cauterization
Linköping University, Department of Clinical and Experimental Medicine, Division of Neuro and Inflammation Science. Linköping University, Faculty of Medicine and Health Sciences. Region Östergötland, Heart and Medicine Center, Occupational and Environmental Medicine Center.
Linköping University, Department of Clinical and Experimental Medicine, Division of Neuro and Inflammation Science. Linköping University, Faculty of Medicine and Health Sciences.
2019 (English)In: Archives of Environmental & Occupational Health, ISSN 1933-8244, E-ISSN 2154-4700Article in journal (Refereed) Epub ahead of print
Abstract [en]

Pyrolysis of nitrogen containing biofuels generates isocyanic acid (ICA) and we here studied if ICA also is present in cauterization smoke. Air sampling was performed when animal technicians that had developed airway symptoms worked with dehorning. Tissue heated in a laboratory model was used to mimic cauterization. ICA in air at the workplace exceeded 10 times the national exposure limit. In the laboratory, the ICA generated per mg tissue from heated hair, horn and nail was 13.9 +/- 7.8, 24.0 +/- 4.1 and 32.0 +/- 2.9 mu g, respectively. Three workers were medically examined and two were diagnosed with asthma and a third had severe airway problem that resembled asthma. The study shows that high levels of ICA are generated during cauterization of nitrogen-containing tissue. If this could trigger airway symptoms deserves to be investigated further.

Place, publisher, year, edition, pages
ROUTLEDGE JOURNALS, TAYLOR & FRANCIS LTD , 2019.
Keywords [en]
Asthma; dehorning; hydrogen cyanide; hot shoeing; isocyanates; particles; surgical smoke
National Category
Public Health, Global Health, Social Medicine and Epidemiology
Identifiers
URN: urn:nbn:se:liu:diva-158587DOI: 10.1080/19338244.2019.1593920ISI: 000470430700001PubMedID: 31070514OAI: oai:DiVA.org:liu-158587DiVA, id: diva2:1334794
Note

Funding Agencies|County Council of Ostergotland Sweden [LIO-677581, LIO-702611]

Available from: 2019-07-03 Created: 2019-07-03 Last updated: 2019-07-03

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CiteExportLink to record
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