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. 2018 Jan:191:1-6.
doi: 10.1016/j.chemosphere.2017.10.014. Epub 2017 Oct 4.

Toxicity of Cold Lake Blend and Western Canadian Select dilbits to standard aquatic test species

Mace G Barron  1 , Robyn N Conmy  2 , Edith L Holder  3 , Peter Meyer  4 , Gregory J Wilson  5 , Vanessa E Principe  5 , Morgan M Willming  6
Affiliations

Toxicity of Cold Lake Blend and Western Canadian Select dilbits to standard aquatic test species

Mace G Barron et al. Chemosphere. 2018 Jan.

Abstract

Dilbits are blends of bitumen and natural gas condensates or crude oils with only limited toxicity data. Two dilbits, Cold Lake Blend and Western Canadian Select, were tested as either unweathered or weathered oils for acute and chronic toxicity to standard freshwater and estuarine organisms. Water accommodated fractions of the dilbits were characterized for total petroleum hydrocarbons (TPH), polycyclic aromatic hydrocarbons (PAHs), and monoaromatics (BTEX). Acute toxicity of unweathered and weathered dilbits ranged from 4 to 16 mg/L TPH, 8 to 40 μg/L total PAHs, and 0.7 to 16 mg/L BTEX in Ceriodaphnia dubia, Pimephales promelas, Americamysis bahia, and Menidia beryllina. Concentrations of weathered dilbits causing impaired growth (A. bahia) and reproduction (C. dubia) ranged from 0.8 to 3.5 mg/L TPH and 6 to 16 μg/L PAHs. The two dilbits had generally similar acute and short term chronic toxicity expressed as TPH or total PAHs as other crude oils and other petroleum products.

Keywords: Bitumen; Dilbit; Toxicity; Water accommodated fraction.

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References

    1. Alderman SL, Lin F, Farrell AP, Kennedy CJ, Gillis TE. Effects of diluted bitumen exposure on juvenile sockeye salmon: from cells to performance. Env Tox Chem. 2016;36:354–360. - PubMed
    1. Alharbi HA, Morandi G, Giesy JP, Wiseman SB. Effect of oil sands process-affected water on toxicity of retene to early life-stages of Japanese medaka (Oryzias latipes) Aquat Tox. 2016;176:1–9. - PubMed
    1. Barron MG, Ka’aihue L. Critical evaluation of CROSERF test methods for oil dispersant toxicity testing under subarctic conditions. Mar Poll Bull. 2003;46:1191–1199. - PubMed
    1. Barron MG, Hemmer MJ, Jackson CR. Development of aquatic toxicity benchmarks for oil products using species sensitivity distributions. Integrat Environ Assess Manag. 2013;9:610–615. - PubMed
    1. Bauer AE, Frank RA, Headley JV, Peru KM, Farwell AJ, Dixon DG. Toxicity of oil sands acid-extractable organic fractions to freshwater fish: Pimephales promelas (fathead minnow) and Oryzias latipes (Japanese medaka) Chemosphere. 2017;171:168–176. - PubMed

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