1. A ubiquitous tire rubber-derived chemical induces acute mortality in coho salmon.
- Author
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Tian Z, Zhao H, Peter KT, Gonzalez M, Wetzel J, Wu C, Hu X, Prat J, Mudrock E, Hettinger R, Cortina AE, Biswas RG, Kock FVC, Soong R, Jenne A, Du B, Hou F, He H, Lundeen R, Gilbreath A, Sutton R, Scholz NL, Davis JW, Dodd MC, Simpson A, McIntyre JK, and Kolodziej EP
- Subjects
- Animals, Northwestern United States, Antioxidants, Benzoquinones, Oncorhynchus kisutch physiology, Phenylenediamines, Rubber chemistry, Rubber toxicity
- Abstract
In U.S. Pacific Northwest coho salmon ( Oncorhynchus kisutch ), stormwater exposure annually causes unexplained acute mortality when adult salmon migrate to urban creeks to reproduce. By investigating this phenomenon, we identified a highly toxic quinone transformation product of N -(1,3-dimethylbutyl)- N '-phenyl-p-phenylenediamine (6PPD), a globally ubiquitous tire rubber antioxidant. Retrospective analysis of representative roadway runoff and stormwater-affected creeks of the U.S. West Coast indicated widespread occurrence of 6PPD-quinone (<0.3 to 19 micrograms per liter) at toxic concentrations (median lethal concentration of 0.8 ± 0.16 micrograms per liter). These results reveal unanticipated risks of 6PPD antioxidants to an aquatic species and imply toxicological relevance for dissipated tire rubber residues., (Copyright © 2021, American Association for the Advancement of Science.)
- Published
- 2021
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