Search Results - "Hewitt, L. M"

Acute toxicity of aromatic and non-aromatic fractions of naphthenic acids extracted from oil sands process-affected water to larval zebrafish by Scarlett, A.G., Reinardy, H.C., Henry, T.B., West, C.E., Frank, R.A., Hewitt, L.M., Rowland, S.J.

“…•Toxicity of oil sands process water extract to fish determined (LC50 ∼8mgL−1).•Toxicity of esterifiable free naphthenic acids determined (LC50…”
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Forensic source differentiation of petrogenic, pyrogenic, and biogenic hydrocarbons in Canadian oil sands environmental samples by Wang, Zhendi, Yang, C., Parrott, J.L., Frank, R.A., Yang, Z., Brown, C.E., Hollebone, B.P., Landriault, M., Fieldhouse, B., Liu, Y., Zhang, G., Hewitt, L.M.

“…•Characterized hydrocarbons (HCs) in various oil sands impacted environmental samples.•Investigated the distribution patterns of oil PAHs/biomarkers from the…”
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Application of the Target Lipid Model and Passive Samplers to Characterize the Toxicity of Bioavailable Organics in Oil Sands Process-Affected Water by Redman, A. D, Parkerton, T. F, Butler, J. D, Letinski, D. J, Frank, R. A, Hewitt, L. M, Bartlett, A. J, Gillis, P. L, Marentette, J. R, Parrott, J. L, Hughes, S. A, Guest, R, Bekele, A, Zhang, K, Morandi, G, Wiseman, S, Giesy, J. P

“…Oil sand operations in Alberta, Canada will eventually include returning treated process-affected waters to the environment. Organic constituents in oil sand…”
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Chemical fingerprinting of naphthenic acids and oil sands process waters—A review of analytical methods for environmental samples by Headley, J. V, Peru, K. M, Mohamed, M. H, Frank, R. A, Martin, J. W, Hazewinkel, R. R.O, Humphries, D, Gurprasad, N. P, Hewitt, L. M, Muir, D. C.G, Lindeman, D, Strub, R, Young, R. F, Grewer, D. M, Whittal, R. M, Fedorak, P. M, Birkholz, D. A, Hindle, R, Reisdorph, R, Wang, X, Kasperski, K. L, Hamilton, C, Woudneh, M, Wang, G, Loescher, B, Farwell, A, Dixon, D. G, Ross, M, Pereira, A. Dos Santos, King, E, Barrow, M. P, Fahlman, B, Bailey, J, Mcmartin, D. W, Borchers, C. H, Ryan, C. H, Toor, N. S, Gillis, H. M, Zuin, L, Bickerton, G, Mcmaster, M, Sverko, E, Shang, D, Wilson, L. D, Wrona, F. J

“…This article provides a review of the routine methods currently utilized for total naphthenic acid analyses. There is a growing need to develop chemical…”
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Assessing Risks of Shallow Riparian Groundwater Quality Near an Oil Sands Tailings Pond by Roy, J.W., Bickerton, G., Frank, R.A., Grapentine, L., Hewitt, L.M.

“…The potential discharge of groundwater contaminated by oil sands process‐affected water (OSPW) is a concern for aquatic ecosystems near tailings ponds…”
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Wild fish from the Bay of Quinte Area of Concern contain elevated tissue concentrations of PCBs and exhibit evidence of endocrine-related health effects by Simmons, D.B.D., McMaster, M.E., Reiner, E.J., Hewitt, L.M., Parrott, J.L., Park, B.J., Brown, S.B., Sherry, J.P.

“…The Bay of Quinte (BOQ) is an Area of Concern listed under the Great Lakes Water Quality Agreement. The presence of dioxins and dioxin-like PCBs in fish in the…”
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Responses of white sucker ( Catostomus commersoni) to 20 years of process and waste treatment changes at a bleached kraft pulp mill, and to mill shutdown by Bowron, L.K., Munkittrick, K.R., McMaster, M.E., Tetreault, G., Hewitt, L.M.

“…The impacts of pulp mill effluents on white sucker ( Catostomus commersoni) have been studied at Jackfish Bay, ON, Canada since the late 1980s. The site…”
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Androgenic effects of a Canadian bleached kraft pulp and paper effluent as assessed using threespine stickleback ( Gasterosteus aculeatus) by Wartman, C.A., Hogan, N.S., Hewitt, L.M., McMaster, M.E., Landman, M.J., Taylor, S., Kovacs, T.G., van den Heuvel, M.R.

“…The presence of unidentified estrogens and androgens in effluents from pulp and paper mills is well documented. However, their role in effluent effects on fish…”
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Long-term effects of an early-life exposure of fathead minnows to sediments containing bitumen. Part II: Behaviour, reproduction, and gonad histopathology by Vignet, C., Frank, R.A., Yang, C., Shires, K., Bree, M., Sullivan, C., Norwood, W.P., Hewitt, L.M., McMaster, M.E., Parrott, J.L.

“…The oil sands area of northern Alberta has river sediments that contain natural bitumen. Eggs and fish in these rivers may be exposed to bitumen-related…”
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Natural sunlight induced photooxidation of naphthalene in aqueous solution by MCCONKEY, B. J, HEWITT, L. M, DIXON, D. G, GREENBERG, B. M

“…There is surprisingly little data on the photooxidation of polycyclic aromatic hydrocarbons (PAHs) under environmentally relevant lighting conditions. The…”
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The toxicity of organic fractions from aged oil sands process-affected water to aquatic species by Bauer, Anthony E., Hewitt, L.M., Parrott, J.L., Bartlett, A.J., Gillis, P.L., Deeth, L.E., Rudy, M.D., Vanderveen, R., Brown, L., Campbell, S.D., Rodrigues, M.R., Farwell, A.J., Dixon, D.G., Frank, R.A.

“…The process of surface mining and extracting bitumen from oil sand produces large quantities of tailings and oil sands process-affected water (OSPW). The…”
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Naphthenic acid fraction compounds reduce the reproductive success of wood frogs (Rana sylvatica) by affecting offspring viability by Robinson, C.E., Elvidge, C.K., Frank, R.A., Headley, J.V., Hewitt, L.M., Little, A.G., Robinson, S.A., Trudeau, V.L., Vander Meulen, I.J., Orihel, D.M.

“…Understanding the toxicity of organic compounds in oil sands process-affected water (OSPW) is necessary to inform the development of environmental guidelines…”
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Preliminary fingerprinting of Athabasca oil sands polar organics in environmental samples using electrospray ionization Fourier transform ion cyclotron resonance mass spectrometry by Headley, J. V., Barrow, M. P., Peru, K. M., Fahlman, B., Frank, R. A., Bickerton, G., McMaster, M. E., Parrott, J., Hewitt, L. M.

“…There is a growing need to develop analytical methods that can distinguish compounds found within industrially derived oil sands process water (OSPW) from…”
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Meltwater from snow contaminated by oil sands emissions is toxic to larval fish, but not spring river water by Parrott, J.L., Marentette, J.R., Hewitt, L.M., McMaster, M.E., Gillis, P.L., Norwood, W.P., Kirk, J.L., Peru, K.M., Headley, J.V., Wang, Z., Yang, C., Frank, R.A.

“…To assess the toxicity of winter-time atmospheric deposition in the oil sands mining area of Northern Alberta, embryo-larval fathead minnow (Pimephales…”
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Long-term effects of an early-life exposure of fathead minnows to sediments containing bitumen. Part I: Survival, deformities, and growth by Vignet, C., Frank, R.A., Yang, C., Wang, Z., Shires, K., Bree, M., Sullivan, C., Norwood, W.P., Hewitt, L.M., McMaster, M.E., Parrott, J.L.

“…The aim of this study was to investigate the long-term effects of a short exposure to natural sediments within the Athabasca oil sand formation to critical…”
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A preparative method for the isolation and fractionation of dissolved organic acids from bitumen-influenced waters by Bauer, Anthony E., Frank, R.A., Headley, J.V., Milestone, C.B., Batchelor, S., Peru, K.M., Rudy, M.D., Barrett, S.E., Vanderveen, R., Dixon, D.G., Hewitt, L.M.

“…The surface mining of oil sands north of Fort McMurray, Alberta produces considerable tailings waste that is stored in large tailings ponds on industrial lease…”
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Brown bullhead at the St. Lawrence River (Cornwall) Area of Concern: health and endocrine status in the context of tissue concentrations of PCBs and mercury by Pinheiro, M. D. O., Simmons, D. B. D., Villella, M., Tetreault, G. R., Muir, D. C. G., McMaster, M. E., Hewitt, L. M., Parrott, J. L., Park, B. J., Brown, S. B., Sherry, J. P.

“…The St. Lawrence River, at Cornwall Ontario, has accumulated sediment contaminants, mainly mercury (Hg) and polychlorinated biphenyls (PCBs), from industrial…”
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Mass spectral characterisation of a polar, esterified fraction of an organic extract of an oil sands process water by Rowland, S. J., Pereira, A. S., Martin, J. W., Scarlett, A. G., West, C. E., Lengger, S. K., Wilde, M. J., Pureveen, J., Tegelaar, E. W., Frank, R. A., Hewitt, L. M.

“…RATIONALE Characterising complex mixtures of organic compounds in polar fractions of heavy petroleum is challenging, but is important for pollution studies and…”
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Chronic toxicity of oil sands tailings pond sediments to early life stages of fathead minnow (Pimephales promelas) by Parrott, J.L., Raine, J.C., McMaster, M.E., Hewitt, L.M.

“…In this study fathead minnow (Pimephales promelas) embryo-larval stages were exposed to two oil sands tailings pond sediments which had previously been shown…”
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Differential changes in gene expression in rainbow trout hepatocytes exposed to extracts of oil sands process-affected water and the Athabasca River by Gagné, F., Douville, M., André, C., Debenest, T., Talbot, A., Sherry, J., Hewitt, L.M., Frank, R.A., McMaster, M.E., Parrott, J., Bickerton, G.

“…The oil sands region of northern Alberta represents the world's largest reserves of bitumen, and the accelerated pace of industrial extraction activity has…”
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