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Occupational exposure to aluminium phosphide and phosphine gas? A suspected case report and review of the literature

Department of Environmental and Molecular Toxicology, Oregon State University, 333 Weniger, Corvallis, OR 97331-6502, USA; sudakind{at}ace.orst.edu

The manufacture and application of aluminium phosphide fumigants pose risks of inhalation exposure to phosphine gas. This article presents a case report of suspected inhalation exposure to phosphine gas in a manufacturing facility for aluminium phosphide fumigants, which was associated with acute dyspnoea, hypotension, bradycardia and other signs of intoxication. These symptoms resolved within several hours after removal from exposure. A review of the data on human exposures to phosphide fumigants identifies both pesticide applicators and individuals in the vicinity of application to be at risk of accidental exposure and injury from phosphine inhalation. More recent reports have identified risks of phosphine gas inhalation in association with the clandestine production of methamphetamine. Toxicodynamic effects of phosphine result from the inhibition of cytochrome c oxidase and subsequent generation of reactive oxygen species. There remain unanswered questions relating to the toxicokinetics of phosphine, as well as the assessment of human exposure utilizing biomarkers. As initial signs and symptoms of intoxication from phosphine gas may be nonspecific and transient, there is a need for improved recognition of the potential hazards associated with phosphide fumigants and phosphine gas.

Key Words: environmental • epidemiology • fumigant • human • occupational • phosphide • phosphine • poisoning • toxicodynamics • toxicokinetics • toxicology

Human & Experimental Toxicology, Vol. 24, No. 1, 27-33 (2005)
DOI: 10.1191/0960327105ht496oa


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