alexa Uptake, distribution and elimination of alpha-pinene in man after exposure by inhalation.
Chemical Engineering

Chemical Engineering

Journal of Analytical & Bioanalytical Techniques

Author(s): Falk AA, Hagberg MT, Lf AE, WigaeusHjelm EM, Wang ZP

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Abstract The toxicokinetics of alpha-pinene were studied in human volunteers exposed by inhalation (2 h, 50 W) in an exposure chamber on four occasions. The exposures were about 10, 225, and 450 mg/m3 (+)-alpha-pinene and 450 mg/m3 (-)-alpha-pinene. The relative pulmonary uptake was about 60\% for the higher exposures, and total uptake increased linearly with increasing exposure. The total blood clearance was high, about 1.11.h-1.kg-1. After the exposure was terminated, less than 0.001\% of the total uptake was eliminated unchanged in the urine and about 8\% in exhaled air. A long half-time in poorly perfused tissues indicates a high affinity to adipose tissues. There was a statistically significant exposure-response relationship among five subjects who experienced irritation. Short-time exposure to alpha-pinene did not give rise to acute changes in lung function 20 min after the exposure.
This article was published in Scand J Work Environ Health and referenced in Journal of Analytical & Bioanalytical Techniques

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