EVALUATION OF CHROMIUM (VI) TOXICITY TO Chlorella vulgaris Beijerinck CULTURES

• Tipo: Artigo em Revista Científica Internacional
• Data: 2011

Autores

Rodriguez, E (Autor) Outra; Santos, C (Autor) Outra; Lucas, E (Autor) Outra; Pereira, MJ (Autor) Outra

Revista

Título: Fresenius Environmental Bulletin

Vol. 20

Páginas: 334-339

ISSN: 1018-4619

Editora: Technische Universitat Munchen

Indexação

ISI Web of Knowledge - 6 Citações

Scopus - 7 Citações

Outras Informações

ID Authenticus: P-002-XN3

Abstract (EN): In order to analyze Cr(VI) toxicity, Chlorella vulgaris Beijerinck cultures were exposed for 96h to Cr(VI) (0.000, 0.100, 0.250, 0.350, 0.500, 0.750 and 1.000 mg/l). Several endpoints were measured by conventional methods and flow cytometry (FCM): a) density (FCM, cell counting and spectrophotometry); b) volume and granularity (FCM); c) chlorophyll-a concentration (spectrophotometry) and algal autofluorescence (FL- FCM). Results demonstrate that, except for FL, all parameters were affected by Cr(VI), being cell density the most affected (lowest EC50: 0.332 mg/L- for FCM). Cell volume and granularity were similarly affected. As for FL and chl a concentration, while the first showed no significant differences among treatments, the latter decreased. Taken all together, we demonstrate that Cr(VI) severely affects the parameters tested.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 6