Ecotoxicity evaluation of a liquid detergent using the automatic biotest ECOTOX
Synthetic detergents are common pollutants reaching aquatic environments in different ways after usage at homes, institutions and industries. In this study a liquid detergent, used for dish washing, was evaluated for its toxicity during long- and short-term tests using the automatic biotest ECOTOX....
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Veröffentlicht in: | Ecotoxicology (London) 2013-08, Vol.22 (6), p.1043-1052 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | Synthetic detergents are common pollutants reaching aquatic environments in different ways after usage at homes, institutions and industries. In this study a liquid detergent, used for dish washing, was evaluated for its toxicity during long- and short-term tests using the automatic biotest ECOTOX. Different parameters of
Euglena gracilis
like motility, swimming velocity, gravitactic orientation, cell compactness and cell growth were used as end points. In short-term experiments, the maximum adverse effects on motility, velocity, cell shape and gravitaxis were observed after 1 h of exposure. With further increase in exposure time to the detergent a slight recovery of these parameters was observed. In long-term experiments, the detergent caused severe disturbances to
E. gracilis
. Motility, cell growth and cell compactness (shape) with EC
50
values of 0.064, 0.18 and 2.05 %, respectively, were found as the most sensitive parameters to detergent stress. There was a slight positive effect on gravitactic orientation at the lowest two concentrations; at higher concentrations of the detergent cells orientation was highly impaired giving EC
50
values of 1.75 and 2.52 % for upward swimming and r-value, respectively. |
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ISSN: | 0963-9292 1573-3017 |
DOI: | 10.1007/s10646-013-1091-8 |