The effects of salinity, pH, and dissolved organic matter on acute copper toxicity to the rotifer, Brachionus plicatilis ("L" strain)

Archives of Environmental Contamination and Toxicology
W R ArnoldD S Smith

Abstract

This paper presents data from original research for use in the development of a marine biotic ligand model and, ultimately, copper criteria for the protection of estuarine and marine organisms and their uses. Ten 48-h static acute (unfed) copper toxicity tests using the euryhaline rotifer Brachionus plicatilis ("L" strain) were performed to assess the effects of salinity, pH, and dissolved organic matter (measured as dissolved organic carbon; DOC) on median lethal dissolved copper concentrations (LC50). Reconstituted and natural saltwater samples were tested at seven salinities (6, 11, 13, 15, 20, 24, and 29 g/L), over a pH range of 6.8-8.6 and a range of dissolved organic carbon of <0.5-4.1 mg C/L. Water chemistry analyses (alkalinity, calcium, chloride, DOC, hardness, magnesium, potassium, sodium, salinity, and temperature) are presented for input parameters to the biotic ligand model. In stepwise multiple regression analysis of experimental results where salinity, pH, and DOC concentrations varied, copper toxicity was significantly related only to the dissolved organic matter content (pH and salinity not statistically retained; alpha=0.05). The relationship of the 48-h dissolved copper LC50 values and dissolved organic carbo...Continue Reading

References

Oct 1, 1995·Archives of Environmental Contamination and Toxicology·B S AndersonJ D Goetzl
Oct 13, 2001·Environmental Toxicology and Chemistry·D M Di ToroR C Santore
Apr 28, 2006·Integrated Environmental Assessment and Management·W Ray Arnold
Aug 28, 2007·Archives of Environmental Contamination and Toxicology·L W HallW R Arnold
Oct 4, 2008·Comparative Biochemistry and Physiology. Toxicology & Pharmacology : CBP·Sunita R NadellaChris M Wood

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Citations

Jul 9, 2010·Archives of Environmental Contamination and Toxicology·W R ArnoldD S Smith
Aug 13, 2013·Ecotoxicology and Environmental Safety·F GissiM S Adams
Jun 15, 2011·Bulletin of Environmental Contamination and Toxicology·Károly Schöll, Gergely Szövényi
Nov 15, 2014·Environmental Science and Pollution Research International·Karen S ChristiansenWillie J G M Peijnenburg
Jan 10, 2021·Comparative Biochemistry and Physiology. Toxicology & Pharmacology : CBP·Abhipsa BalBiswaranjan Paital
Jan 2, 2014·Environmental Science & Technology·Christopher A CooperD Scott Smith
Dec 25, 2019·Environmental Science & Technology·Zishuang Shao, Wen-Xiong Wang

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