| OCR Text |
Show 1. INTRODUCTION This report summarizes a chronic toxicity test evaluating the effects of selenium (as sodium selenate) on the hypersaline algae, Dunaliella viridis. The study measured adverse effects on specific. growth rate and cumulative area under the curve after exposing algae to a series of selenium concentrations for 96 hours. The objective of this study was to determine the NOEC, LOEC, and EC50 for growth. The data are to be used to aid in developing a selenium water quality criterion for the Great Salt Lake (GSL). Biological testing was conducted from 7-11 August 1,997, at Parametrix' s Environmental Toxicology Laboratory in Kirkland, Washington. Testing consisted of one chronic definitive bioassay using Dunaliella viridis as the test species. All selenium analyses were conducted by Sound Analytical Services in Tacoma, Washington. The body of this report presents the materials and methods used, and test results. Section 2 discusses the materials used (physical system, test substance, and test system) and test methods (technical approach used to meet the study objectives). Section 3 describes the biological and analytical results. Section 4 discusses protocol deviations. Parametrix, Inc. Final Report 1 March 1998 |
