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Prediction of the behavior of heavy metals over time is important to evaluate the heavy metal toxicity in algae species. Various modeling studies have been well established, but there is a need for an improved model for predicting the chronic effects of metals on algae species to combine the metal kinetics and biological response of algal cells. In this study, a kinetic dynamics model was developed to predict the copper behavior (5 μg L-1, 10 μg L-1, and 15 μg L-1) for two freshwater algae (Pseudokirchneriella subcapitata and Chlorella vulgaris) in the chronic exposure experiments (8 d and 21 d). In the experimental observations, the rapid change in copper mass between the solutions, extracellular and intracellular sites occurred within initial exposure periods, and then it was slower although the algal density changed with time. Our model showed a good agreement with the measured copper mass in each part for all tested conditions with an elapsed time (R 2 for P. subcapitata: 0.928, R 2 for C. vulgaris: 0.943). This study provides a novel kinetic dynamics model that is compromised between practical simplicity and realistic complexity, and it can be used to investigate the chronic effects of heavy metals on the algal population.
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참고문헌 (32)
참고문헌 신청
Areco MM / 2010 / Copper, zinc, cadmium and lead biosorption by Gymnogongrus torulosus. Thermodynamics and kinetics studies / Colloid Surf. B-Biointerfaces 81:620~628
Ayed HBA / 2015 / Effect of magnesium ion concentration in autotrophic cultures of Chlorella vulgaris / Algal Res 9:291~296
Campbell PGC / 2002 / Metal bioavailability to phytoplankton-applicability of the biotic ligand model / Comp. Biochem. Physiol. C-Toxicol. Pharmacol 133:189~206
Chen Z / 2008 / Biosorption of nickel and copper onto treated alga(Undaria pinnatifida) : Application of isotherm and kinetic models / J. Hazard. Mater 155:327~333
Chen Z / 2010 / Validation of the biotic ligand model in metal mixture : bioaccumulation of lead and copper / Environ. Sci. Technol 44:3580~3586
Ayed HBA / 2015 / Effect of magnesium ion concentration in autotrophic cultures of Chlorella vulgaris / Algal Res 9:291~296
Campbell PGC / 2002 / Metal bioavailability to phytoplankton-applicability of the biotic ligand model / Comp. Biochem. Physiol. C-Toxicol. Pharmacol 133:189~206
Chen Z / 2008 / Biosorption of nickel and copper onto treated alga(Undaria pinnatifida) : Application of isotherm and kinetic models / J. Hazard. Mater 155:327~333
Chen Z / 2010 / Validation of the biotic ligand model in metal mixture : bioaccumulation of lead and copper / Environ. Sci. Technol 44:3580~3586
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