Journal
MARINE ENVIRONMENTAL RESEARCH
Volume 91, Issue -, Pages 41-44Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.marenvres.2013.08.003
Keywords
Toxicity test; New chemicals; Probits; Ecotoxicology
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Every year thousands of new substances are synthetized and marketed. Either by regulatory demands or scientific purposes, these substances should all be tested. The determination of lethal concentration (LC) in a given population after toxicity testing in the laboratory is still the best way to establish and compare toxicity. In this technical note, we propose an R function to estimate LC with improvements on the choice of experimental design and calculation parameters, as well as in editing and spreadsheet loading. Although only LC50 values are considered herein, the same statistical considerations apply to EC50 and ED50 from quantal (dichotomous, binomial, binary) data. A running example is also provided. (C) 2013 Elsevier Ltd. All rights reserved.
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