Toxicity of silver to two freshwater algae, Chlamydomonas reinhardtii and Pseudokirchneriella sub-capitata, grown under continuous culture conditions: influence of thiosulphate

Aquatic Toxicology
Véronique P Hiriart-BaerPeter G C Campbell

Abstract

In a test of the biotic ligand model (BLM), the uptake and toxicity of silver, in the absence or presence of the inorganic ligand, thiosulphate, were assessed for two freshwater green algae, Chlamydomonas reinhardtii and Pseudokirchneriella sub-capitata, using turbidostat continuous cultures. In the initial experiments, run in the absence of thiosulphate, the influent Ag concentration was varied from 0 to 75 nM in steps; for each influent concentration, silver uptake was calculated and the algal growth rate was determined. Silver uptake rates at low Ag concentrations were similar for both algae (e.g., 14-19 nmolm(-2)h(-1), for influent Ag(+) concentrations of approximately 9 nM) but at higher exposures uptake by P. sub-capitata exceeded that of C. reinhardtii. Despite this higher uptake rate, in the absence of thiosulphate P. sub-capitata was not more sensitive to free silver; 50% growth inhibition was reached at influent free Ag(+) concentrations of 15+/-7 and 22+/-13 nM for C. reinhardtii and P. sub-capitata, respectively. In the second series of experiments, the free Ag(+) concentration was held constant ( approximately 9 nM in the influent; 2-3 nM in the effluent) while the concentration of the silver thiosulphate complex, ...Continue Reading

Citations

Aug 31, 2011·Ecotoxicology·Andrew TurnerMurray T Brown
May 9, 2012·Bulletin of Environmental Contamination and Toxicology·Yanping SuJian Yang
Dec 6, 2011·Ecotoxicology and Environmental Safety·Abdallah OukarroumRadovan Popovic
Jan 24, 2013·Environmental Toxicology and Chemistry·Abdallah OukarroumDavid Dewez
Sep 8, 2010·Environmental Toxicology and Chemistry·Tasha L StoiberDavid E Armstrong
Aug 28, 2015·Environmental Pollution·Laura Sigg, Ursula Lindauer
Dec 3, 2011·The Science of the Total Environment·François PerreaultRadovan Popovic
May 21, 2014·Nanotoxicology·Sara Nørgaard Sørensen, Anders Baun
Jul 25, 2017·The Science of the Total Environment·Tatiana AndreaniCarlos M Pereira
Aug 21, 2018·Environmental Toxicology and Chemistry·Merethe KleivenDeborah Helen Oughton
Feb 14, 2012·Chemical Communications : Chem Comm·Joung-Min KimKeun-Hyeung Lee
Nov 24, 2017·Archives of Environmental Contamination and Toxicology·Meghan MarshallViviane Yargeau
Dec 15, 2020·The Science of the Total Environment·D Scott SmithS Lofts
Jun 19, 2007·Environmental Toxicology and Chemistry·Christel S HasslerMichael R Twiss
Mar 12, 2021·Environmental Toxicology and Chemistry·Katrien ArijsJelle Mertens
Feb 6, 2009·Environmental Science & Technology·Enrique NavarroRenata Behra
Oct 1, 2010·Langmuir : the ACS Journal of Surfaces and Colloids·Xuan LiHarold W Walker
Dec 11, 2013·Environmental Science & Technology·Simon Leclerc, Kevin J Wilkinson

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