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Validating the chronic Pb algae bioavailability model at high pH : single-species evaluation : final report, 12 June 2017

(2017)
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Abstract
We investigated toxicity of Pb to Pseudokirchneriella subcapitata using the standard 72h-growth inhibition assays at 2 pH levels (pH 7.2 & pH 8.4) and 2 P (P 10 ug/L & P 100 ug/L) levels, i.e. at 4 treatments in total. This was done to test whether an existing algae Pb bioavailability model developed for pH≤8.0, can be used at higher pH>8.0. The algae Pb bioavailability model calibrated on Pb toxicity at pH 7.2 (P 100 µg/L) predicted filtered Pb toxicity(EC50 and EC20) at pH 8.4 (P 100 µg/L) with reasonable accuracy, i.e. within 2-fold error. Although the slope of the linear relationship between pH and log10(EC50 as Pb2+ acitivity) for the pH range between 7.2 and 8.4 (present study) was slightly lower than that of the pH range between 6 and 8 (existing model), our study suggests that the chronic algae Pb bioavailability model can be extrapolated to predict Pb toxicity up to pH 8.4.
Keywords
ecotoxicology, lead, algae, bioavailability, risk assessment

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Citation

Please use this url to cite or link to this publication:

MLA
De Schamphelaere, Karel, and Charlotte Nys. “Validating the Chronic Pb Algae Bioavailability Model at High pH : Single-species Evaluation : Final Report, 12 June 2017.” 2017 : n. pag. Print.
APA
De Schamphelaere, K., & Nys, C. (2017). Validating the chronic Pb algae bioavailability model at high pH : single-species evaluation : final report, 12 June 2017. Ghent, Belgium: Ghent University. Faculty of Bioscience Engineering. Laboratory of Environmental Toxicology and Aquatic Ecology.
Chicago author-date
De Schamphelaere, Karel, and Charlotte Nys. 2017. “Validating the Chronic Pb Algae Bioavailability Model at High pH : Single-species Evaluation : Final Report, 12 June 2017”. Ghent, Belgium: Ghent University. Faculty of Bioscience Engineering. Laboratory of Environmental Toxicology and Aquatic Ecology.
Chicago author-date (all authors)
De Schamphelaere, Karel, and Charlotte Nys. 2017. “Validating the Chronic Pb Algae Bioavailability Model at High pH : Single-species Evaluation : Final Report, 12 June 2017”. Ghent, Belgium: Ghent University. Faculty of Bioscience Engineering. Laboratory of Environmental Toxicology and Aquatic Ecology.
Vancouver
1.
De Schamphelaere K, Nys C. Validating the chronic Pb algae bioavailability model at high pH : single-species evaluation : final report, 12 June 2017. Ghent, Belgium: Ghent University. Faculty of Bioscience Engineering. Laboratory of Environmental Toxicology and Aquatic Ecology; 2017.
IEEE
[1]
K. De Schamphelaere and C. Nys, “Validating the chronic Pb algae bioavailability model at high pH : single-species evaluation : final report, 12 June 2017.” Ghent University. Faculty of Bioscience Engineering. Laboratory of Environmental Toxicology and Aquatic Ecology, Ghent, Belgium, 2017.
@misc{8564298,
  abstract     = {We investigated toxicity of Pb to Pseudokirchneriella subcapitata using the standard 72h-growth inhibition assays at 2 pH levels (pH 7.2 & pH 8.4) and 2 P (P 10 ug/L & P 100 ug/L) levels, i.e. at 4 treatments in total. This was done to test whether an existing algae Pb bioavailability model developed for pH≤8.0, can be used at higher pH>8.0. The algae Pb bioavailability model calibrated on Pb toxicity at pH 7.2 (P 100 µg/L) predicted filtered Pb toxicity(EC50 and EC20) at pH 8.4 (P 100 µg/L) with reasonable accuracy, i.e. within 2-fold error. Although the slope of the linear relationship between pH and log10(EC50 as Pb2+ acitivity)  for the pH range between 7.2 and 8.4 (present study) was slightly lower than that of the pH range between 6 and 8 (existing model), our study suggests that the chronic algae Pb bioavailability model can be extrapolated to predict Pb toxicity up to pH 8.4.},
  author       = {De Schamphelaere, Karel and Nys, Charlotte},
  keywords     = {ecotoxicology,lead,algae,bioavailability,risk assessment},
  language     = {eng},
  pages        = {20},
  publisher    = {Ghent University. Faculty of Bioscience Engineering. Laboratory of Environmental Toxicology and Aquatic Ecology},
  title        = {Validating the chronic Pb algae bioavailability model at high pH : single-species evaluation : final report, 12 June 2017},
  year         = {2017},
}