| Autor: |
Moriarity RJ; Department of Physical and Environmental Sciences, University of Toronto , Toronto, ON, Canada., Wilton MJ; Department of Physical and Environmental Sciences, University of Toronto , Toronto, ON, Canada., Liberda EN; School of Occupational and Environmental Health, Ryerson University , Toronto, ON, Canada., Tsuji LJS; Department of Physical and Environmental Sciences, University of Toronto , Toronto, ON, Canada., Peltier RE; Department of Environmental Health Sciences, University of Massachusetts , Amherst, MA, USA. |
| Abstrakt: |
Indoor concentrations of black carbon (BC) were measured when wood was burned for traditional cultural activities in a study in a Cree community located in subarctic Canada. The study also included an intervention using a propane-fuelled heater to mitigate in situ BC. Mass concentrations of BC were measured in a game-smoking tent for 39 days and in hunting cabins on the west coast of James Bay, Canada, for 8 days. Five-minute averaged BC mass concentration (N = 12,319) data were recorded and assessed using optimised noise-reduction averaging. Mean BC mass concentrations were lower in hunting cabins (mean = 8.25 micrograms per cubic metre (µg m -3 )) and higher in the game-smoking tent (mean = 15.46 µg m -3 ). However, excessive BC peaks were recorded in the game-smoking tent (maximum = 3076.71 µg m -3 ) when the fire was stoked or loaded. The intervention with the propane heater in a hunting cabin yielded a 90% reduction in measured BC mass concentrations. We do not presume that exposure to BC is of concern in hunting cabins with appropriate wood-burning appliances that are well-sealed and vent outside. In game-smoking tents, we advise that persons take intermittent breaks outside of the tent for fresh air. |
