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TitleDo the water chemistry parameters pH, alkalinity and dissolved organic carbon affect the bioaccumulation and toxicity of metals in a metals-contaminated system? A case study
AuthorNorwood, W P; Milne, L; Grapentine, L C; Dixon, D G; Alpay, S; Brown, M
SourceProceedings of the 40th Annual Aquatic Toxicity Workshop:; by Jackman, P (ed.); Burridge, L E (ed.); Murdoch, M (ed.); Morais, R (ed.); Leblanc, J (ed.); Allen Jarvis, R (ed.); Canadian Technical Report of Fisheries and Aquatic Sciences 3098, 2014 p. 43
LinksATW 2013 Proceedings (PDF, 1.72 MB)
Alt SeriesEarth Sciences Sector, Contribution Series 20130186
PublisherDepartment of Fisheries and Oceans
MeetingAquatic Toxicity Workshop; Moncton, NB; CA; October 6-9, 2013
Mediapaper; on-line; digital
File formatpdf
Subjectsgeochemistry; lake sediments; lake water geochemistry; lake sediment geochemistry; alkalinity; acidity; organic carbon; cobalt geochemistry
ProgramTools for environmental impacts and adaptation for metal mining, Environmental Geoscience
AbstractA northern Quebec lake system impacted by acid mine tailings for 70 years was sampled in 2011 and 2012. Alkalinity, dissolved organic carbon (DOC), and pH were measured. As well, major ions and up to 45 dissolved metals were measured across the system. In conjunction, Hyalella azteca sediment toxicity tests, waterborne toxicity tests, and some in situ cage tests were performed to assess toxicity and metal bioaccumulation. The data will be presented and the relationships of pH, alkalinity, and dissolved organic carbon to the bioaccumulation and toxicity of metals in the amphipods will be examined. Results obtained from laboratory testing of the effect of alkalinity, DOC, and pH on the bioaccumulation and toxicity of cobalt (Co) will be compared to field results to determine if laboratory-based models can be used to predict field effects.
Summary(Plain Language Summary, not published)
The current study in a northern Quebec lake system downstream of acid mine tailings will test the relationship between acidity, alkalinity, and dissolved organic carbon with metal concentrations and toxicity both at the field site and in the lab. The goal of this study is to determine whether or not laboratory-tested models that consider all of these parameters can be developed to predict field effects.