Donald Mackay

TL;DR: Sensitivity analyses reveal that the performance and reliability of the BETR model is strongly influenced by parameters controlling degradation rates, which have a high potential to contribute alpha-HCH contamination in the Arctic due to high rates of emission in these regions despite low Transfer Efficiencies.

TL;DR: The activity approach may be used to describe transport and partitioning of multivalent ionizable organic compounds and to build multimedia fate models.

TL;DR: The reproductive failure of several species - including the peregrine falcon, the double crested cormorant, the brown pelican, and the osprey - has been attributed to organochlorine contamination, highlighting the extent to which wildlife tissues can be used to indicate general levels of environmental contamination and provide guidance to the scientific and regulatory communities about the state of the environment.

TL;DR: In this article, the applicability of several analytical techniques (purge-and-trap gas chromatography, high pressure liquid chromatography and fluorescence) for the determination of dissolved hydrocarbon concentrations is discussed critically.

TL;DR: A mass balance model to describe the sources, transport and fate of seven polycyclic aromatic hydrocarbons in the water and sediments of, and atmosphere over Lac Saint Louis, Quebec is developed and calibrated.