Abstract
Chromium poses a potential threat to coastal ecosystems. We used standard toxicity bioassays (semi-static, chronic) to evaluate EDTA as a chelating agent for reducing trivalent and hexavalent chromium toxicity on Petrolisthes laevigatus. Crab survival decreased linearly with increased chromium concentrations and dropped significantly beginning at 40 mg/L Cr (VI) and 80 mg/L Cr (III). No significant differences were observed with Cr (III) + EDTA as compared with untreated controls. Cr (VI) toxicity was greater than that of Cr (III), with low individual survival rates. The protective effect of EDTA in the medium increased crab survival by 41%–48%.
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We thank Dr. L. DiSalvo and D. Barriga for translation assistance.
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Urrutia, C., Rudolph, A., Lermanda, M.P. et al. Assessment of EDTA in Chromium (III–VI) Toxicity on Marine Intertidal Crab (Petrolisthes laevigatus). Bull Environ Contam Toxicol 80, 526–528 (2008). https://doi.org/10.1007/s00128-007-9310-8
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DOI: https://doi.org/10.1007/s00128-007-9310-8