PMID: 11337878May 8, 2001Paper

Development of a freshwater aquatic toxicity database for ambient water quality criteria for methyl tertiary-butyl ether

Environmental Toxicology and Chemistry
D C WongA Steen

Abstract

The detection of methyl tertiary-butyl ether (MTBE) in groundwater and surface water in recent years has drawn attention to its potential effects in aquatic ecosystems. To address concerns regarding MTBE environmental effects and to establish safe concentrations in surface waters, a collaborative effort was initiated in 1997 to develop aquatic toxicity databases sufficient to derive ambient water quality criteria for MTBE consistent with United States Environmental Protection Agency (U.S. EPA) requirements. Acute toxicity data for six species, chronic toxicity data for a fish and an invertebrate, and plant toxicity data were developed in order to complete the freshwater database. The toxicity tests followed U.S. EPA and American Society for Testing and Materials (ASTM, Philadelphia, PA, USA) procedures and were conducted in accordance with U.S. EPA Good Laboratory Practice guidelines. Based on measured exposure concentrations, acute toxicity endpoints ranged from 472 to 1742 mg MTBE/L, while chronic endpoints (IC25) were 57 to 308 mg MTBE/L. Aquatic invertebrates were generally more sensitive than fish to MTBE in both acute and chronic exposures. Acute-to-chronic ratios for fathead minnows and Daphnia magna were 3.4 and 11.3, r...Continue Reading

Citations

Nov 6, 2003·Toxicology in Vitro : an International Journal Published in Association with BIBRA·Hella Lichtenberg-FratéJost Ludwig
Mar 27, 2012·Environmental Toxicology and Chemistry·David K DeForest, Eric J Van Genderen

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