• Publications
  • Influence
Biological monitoring of polyfluoroalkyl substances: A review.
The pattern of contamination in wildlife varied among species and locations suggesting multiple emission sources and knowledge gaps with respect to the transport, accumulation, biodegradation, temporal/spatial trends and PFS precursors have been identified. Expand
Trophic magnification factors: considerations of ecology, ecosystems, and study design.
Empirical TMFs are likely to be useful for understanding the food web biomagnification potential of chemicals, but may be less useful in species- and site-specific risk assessments, where the goal is to predict absolute contaminant concentrations in organisms in relation to threshold levels. Expand
Biological and chemical factors of importance in the bioaccumulation and trophic transfer of persistent organochlorine contaminants in Arctic marine food webs.
The present paper summarizes the recent literature with an emphasis on identifying important ecological factors for explaining variability of OC concentrations among organisms and introduces simplification into models developed to assess OC dynamics in aquatic food webs. Expand
Levels and trends of brominated flame retardants in the Arctic.
Air and harbor sediment results for PBDEs indicate that there are local sources near highly populated areas within the Arctic and findings of PBBs on moss and TBBPA on an air filter indicates that these compounds may also reach the Arctic by long-range atmospheric transport. Expand
Endosulfan, a global pesticide: a review of its fate in the environment and occurrence in the Arctic.
Endosulfan does fulfil several of the criteria under the UNEP Stockholm Convention for designation as a persistent organic pollutant and is present in marine mammals, although there is uncertainty in the various Arctic biota datasets due to differences in analytical techniques. Expand
Are there other persistent organic pollutants? A challenge for environmental chemists.
  • D. Muir, P. Howard
  • Environmental Science, Medicine
  • Environmental science & technology
  • 2 November 2006
The question of whether there is now sufficient information to permit a broader array of chemicals to be determined in environmental matrices is addressed and 30 chemicals with high predicted bioconcentration and low rate of biodegradation are listed. Expand
Toward a global network for persistent organic pollutants in air: results from the GAPS study.
The Global Atmospheric Passive Sampling (GAPS) study aims to demonstrate the feasibility of using passive samplers to assess the spatial distribution of persistent organic pollutants on a worldwideExpand
Arctic contaminants: sources, occurrence and pathways.
It is concluded that both the atmosphere and the ocean are important transport media for potentially toxic organic compounds in the northern polar region and even for the HCH substances, which are relatively easily measured and simple in composition compared to other synthetic organics. Expand
Persistent organic pollutants and mercury in marine biota of the Canadian Arctic: an overview of spatial and temporal trends.
This review summarizes and synthesizes the significant amount of data which was generated on mercury (Hg) and persistent organic pollutants (POPs) in Canadian Arctic marine biota since the firstExpand
Perfluorinated acids in Arctic snow: new evidence for atmospheric formation.
High Arctic ice caps experience contamination solely from atmospheric sources, and atmospheric oxidation of volatile precursors is a primary source of PFAs to the Arctic, suggesting a fast response to changes in production. Expand