The emissions of CO and other volatiles from the world's subaerial volcanoes.

Volcanoes are the main pathway to the surface for volatiles that are stored within the Earth. Carbon dioxide (CO) is of particular interest because of its potential for climate forcing. Understanding the balance of CO that is transferred from the Earth's surface to the Earth's interior, hinges on accurate quantification of the long-term emissions of volcanic CO to the atmosphere.

Emission of hexanal and carbon monoxide from storage of wood pellets, a potential occupational and domestic health hazard.

Objectives: The objective of the present study was to investigate and describe the emissions of volatile compounds, particularly hexanal and carbon monoxide, from large- and small-scale storage of wood pellets.

Methods: Air sampling was performed with Fourier transform infrared spectroscopy and adsorbent sampling in pellet warehouses, domestic storage rooms, lumber kiln dryers and experimental set-ups. Literature studies were included to describe the formation of hexanal and carbon monoxide and the toxicology of hexanal.