期刊
BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY
卷 91, 期 2, 页码 191-196出版社
SPRINGER
DOI: 10.1007/s00128-013-1029-0
关键词
Aquatic toxicity; Mercury; Species sensitivity distribution
资金
- The Portuguese Foundation for Science and Technology (FCT) [SFRH/BPD/45807/2008]
- CAPES-FCT [240/09]
- [SFRH/BD/27637/2006]
- Fundação para a Ciência e a Tecnologia [SFRH/BD/27637/2006, SFRH/BPD/45807/2008] Funding Source: FCT
Mercury toxicity to aquatic organisms was evaluated in different taxonomic groups showing the following species sensitivity gradient: Daphnia magna > Daphnia longispina > Pseudokirchneriella subcapitata > Chlorella vulgaris > Lemna minor > Chironomus riparius. Toxicity values ranged from 3.49 mu g/L (48 h-EC50 of D. magna) to 1.58 mg/L (48 h-EC50 of C. riparius). A species sensitivity distribution was used to estimate hazardous mercury concentration at 5 % level (HC5) and the predicted no effect concentration (PNEC). The HC5 was 3.18 mu g Hg/L and the PNEC varied between 0.636 and 3.18 mu g Hg/L, suggesting no risk of acute toxicity to algae, plants, crustaceans and insects in most freshwaters.
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