Diffusive Gradients in Thin Films Can Predict the Toxicity of Metal Mixtures to Two Microalgae: Validation for Environmental Monitoring in Antarctic Marine Conditions

Environmental Toxicology and Chemistry
Darren J KoppelDianne F Jolley

Abstract

Anthropogenic contamination in the Antarctic near-shore marine environment is a challenge for environmental managers because of its isolation, high costs associated with monitoring and remediation activities, and the current lack of Antarctic-specific ecotoxicological data. The present study investigated the application of diffusive gradients in thin films (DGT) with a Chelex-100 binding resin for metal contaminant assessment in Antarctic marine conditions. Diffusion coefficients for cadmium (Cd), copper (Cu), nickel (Ni), lead (Pb), and zinc (Zn), determined at 1 °C, ranged between 2.1 and 2.6×10-6  cm2 /s and were up to 32% lower than those derived by theoretical calculations. Competition of metals on the DGT binding resin was observed at subsaturation concentrations, reducing the effective capacity for metal uptake by approximately 60%. The lability of the dissolved (0.45 µm filterable) Cd, Cu, Pb, and Zn metal fraction to DGT was generally >90% and unaffected by the presence of the Antarctic marine microalga Phaeocystis antarctica. Both DGT and dissolved metal concentrations gave equivalent mixture toxicity predictions in independent action and concentration addition models to P. antarctica and Cryothecomonas armigera; that...Continue Reading

References

Jun 7, 1985·Journal of Theoretical Biology·M C Berenbaum
Oct 3, 2002·Comparative Biochemistry and Physiology. Toxicology & Pharmacology : CBP·D Scott SmithJames R Kramer
Jun 2, 2005·Environmental Science & Technology·Peter M Chapman, Martin J Riddle
Jun 20, 2006·Marine Pollution Bulletin·Anne S PalmerAshley T Townsend
Sep 24, 2008·Environmental Toxicology and Chemistry·Nicole A HillEmma L Johnston
Jul 26, 2012·Environmental Science & Technology·Stuart L SimpsonDianne F Jolley
May 14, 2014·Water Research·Jennifer D HochmuthKarel A C De Schamphelaere
Feb 24, 2015·Environmental Toxicology and Chemistry·Francesca GissiDianne F Jolley
Jun 24, 2015·Archives of Environmental Contamination and Toxicology·Zhihao WuYuanzhi Xu
Jan 24, 2016·Environmental Toxicology and Chemistry·Jessica R HolanAndrew R Davis
Apr 25, 2016·Journal of Environmental Management·Daniela DiasAntónio Pais Antunes
Nov 13, 2017·The Science of the Total Environment·Olga V OleinikovaOleg S Pokrovsky

❮ Previous
Next ❯

Citations

Mar 26, 2021·Environmental Science and Pollution Research International·Viet Huu NguyenSeunghee Han
Mar 23, 2021·Environmental Toxicology and Chemistry·Gabriella K MacoustraAleicia Holland
Aug 25, 2021·Environmental Pollution·Darren J KoppelDianne F Jolley

❮ Previous
Next ❯

Related Concepts

Related Feeds

Antibody Specificity

Antibodies produced by B cells are highly specific for antigen as a result of random gene recombination and somatic hypermutation and affinity maturation. As the main effector of the humoral immune system, antibodies can neutralize foreign cells. Find the latest research on antibody specificity here.