| [PMID]: | 21789673 |
| [Au] Autor: | Marwood C; McAtee B; Kreider M; Ogle RS; Finley B; Sweet L; Panko J |
| [Ad] Endereço: | ChemRisk Canada, 291 Woodlawn Road West, Guelph, ON, N1H 7L6, Canada. |
| [Ti] Título: | Acute aquatic toxicity of tire and road wear particles to alga, daphnid, and fish. |
| [So] Source: | Ecotoxicology;20(8):2079-89, 2011 Nov. |
| [Is] ISSN: | 1573-3017 |
| [Cp] País de publicação: | United States |
| [La] Idioma: | eng |
| [Ab] Resumo: | Previous studies have indicated that tire tread particles are toxic to aquatic species, but few studies have evaluated the toxicity of such particles using sediment, the likely reservoir of tire wear particles in the environment. In this study, the acute toxicity of tire and road wear particles (TRWP) was assessed in Pseudokirchneriella subcapita, Daphnia magna, and Pimephales promelas using a sediment elutriate (100, 500, 1000 or 10000 mg/l TRWP). Under standard test temperature conditions, no concentration response was observed and EC/LC(50) values were greater than 10,000 mg/l. Additional tests using D. magna were performed both with and without sediment in elutriates collected under heated conditions designed to promote the release of chemicals from the rubber matrix to understand what environmental factors may influence the toxicity of TRWP. Toxicity was only observed for elutriates generated from TRWP leached under high-temperature conditions and the lowest EC/LC(50) value was 5,000 mg/l. In an effort to identify potential toxic chemical constituent(s) in the heated leachates, toxicity identification evaluation (TIE) studies and chemical analysis of the leachate were conducted. The TIE coupled with chemical analysis (liquid chromatography/mass spectrometry/mass spectrometry [LC/MS/MS] and inductively coupled plasma/mass spectrometry [ICP/MS]) of the leachate identified zinc and aniline as candidate toxicants. However, based on the high EC/LC(50) values and the limited conditions under which toxicity was observed, TRWP should be considered a low risk to aquatic ecosystems under acute exposure scenarios. |
| [Mh] Termos MeSH primário: |
Cyprinidae
Daphnia/efeitos dos fármacos
Hyperotreti
Borracha/toxicidade
Poluentes da Água/toxicidade
|
| [Mh] Termos MeSH secundário: |
Animais
Ecotoxicologia/métodos
Exposição Ambiental
Sedimentos Geológicos
Temperatura Ambiente
Testes de Toxicidade Aguda
|
| [Pt] Tipo de publicação: | JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T |
[Nm] Nome de substância:
| 0 (Water Pollutants); 9006-04-6 (Rubber) |
| [Em] Mês de entrada: | 1203 |
| [Cu] Atualização por classe: | 171019 |
[Lr] Data última revisão:
| 171019 |
| [Sb] Subgrupo de revista: | IM |
| [Da] Data de entrada para processamento: | 110727 |
| [St] Status: | MEDLINE |
| [do] DOI: | 10.1007/s10646-011-0750-x |
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