Community Based Environmental Risk Analysis for Ciprofloxacin Hydrochloride

摘要

The negative effects of pharmaceuticals residues in aquatic environment to organisms have been attracted more and more attention in the public. In this paper, the effects of ciprofloxacin hydrochloride on community of aquatic organisms were analyzed. The acute toxicity values (EC_(50)/LC_(50)) for Chlorella vulgaris, Photobacterium phosphoreum, Daphnia magna and guppy were 20.61, 63.27, 135.15 and 365.00 mg/L respectively. The results showed that the higher chain level of organism could lead to stronger tolerance of ciprofloxacin hydrochloride. Standardization Risk Quotient (SRQ) was proposed basing on the introduction of the normalization factor into risk models. SRQ can be directly applied to judge the risk levels for the exogenous pollutants into the environment without considering the effects of aquatic organisms from different food chains.