Levels of polycyclic aromatic hydrocarbons and dibenzothiophenes in wetland sediments and aquatic insects in the oil sands area of Northeastern Alberta, Canada

摘要: An immense volume of tailings and water is accumulating in ponds located on mine leases the oil sands area Alberta, Canada. Oil mining companies have proposed to use tailings- water-amended lakes wetlands as part their remediation plans. Polycyclic aromatic hydrocarbons (PAHs) are substances concern water. In this study, we determined concentrations PAHs sediments, insect larvae adult insects collected or adjacent three groups wetlands: experimental which had been purposely added, that were but not experimentally manipulated reference near leases. Alkylated dominated PAH profile all types samples categories wetlands. Median maximum concentrations, especially alkylated tended be higher sediments than other Such was case for insects, contained expected levels ponds. Overlap among pond suggests any increase resulting from addition would modest. Biota-sediment accumulation factors parent counterparts lower Research needed examine affect bioavailability