Main content

Fluorotelomer Acids are More Toxic than Perfluorinated Acids

Show simple item record (MacDonald) Phillips, Michelle M. Dinglasan-Panlilio, Mary Joyce A. Mabury, Scott A. 2011-09-07T02:32:31Z 2011-09-07T02:32:31Z 2007
dc.description.abstract Saturated and unsaturated fluorotelomer carboxylic acids have been identified as intermediates in the degradation of fluorotelomer alcohols to perfluorinated carboxylic acids(PFCAs). Although surface waters are the likely environmental sink for telomer acids, no fate or toxicity data exist for this matrix. We assessed the acute toxicity of the 4:2, 6:2, 8:2, and 10:2 saturated (FTCA) and unsaturated (FTUCA)fluorotelomer carboxylic acids toDaphnia magna,Chironomus tentans, and Lemna gibba. In general, toxicity increased with increasing fluorocarbon (FC) chain length, particularly for telomer acids of g8 FCs. In addition, the FTCAs were generally more toxic than the corresponding FTUCAs. Acute EC50s ranged from 0.025 mg/L (0.04 ímol/L) for D. magna(10:2 FTCA, immobility) to 63 mg/L (167 ímol/L) for C. tentans(6:2 FTCA, growth). While chain-length trends observed in the current study agree with those previously reported for PFCAs, the toxicity thresholds generated here are up to 10 000 times smaller. Our data provide the first evidence that PFCA precursors are more toxic than the PFCAs themselves.
dc.language.iso en en_US
dc.publisher Environmental Science and Technology en_US
dc.subject Fluorotelomer carboxylic acids en_US
dc.subject Fluorotelomer alcohols en_US
dc.subject Surface waters en_US
dc.subject Toxicity en_US
dc.title Fluorotelomer Acids are More Toxic than Perfluorinated Acids en_US
dc.type Article en_US
dc.contributor.affiliation School of Environmental Sciences
dc.rights.license All items in the Atrium are protected by copyright with all rights reserved unless otherwise indicated.
dcterms.relation (MacDonald) Phillips, M.M., Dinglasan-Panlilio, M.J.A., Mabury, S.A., Solomon, K.R., and Sibley, P.K. "Fluorotelomer Acids are More Toxic than Perfluorinated Acids." Environmental Science and Technology 41.20 (2007): 7159-7163

Files in this item

Files Size Format View
FTCA_paper_EST_41_7159-7163.pdf 150.3Kb PDF View/Open

This item appears in the following Collection(s)

Show simple item record