INTERACTION BETWEEN CADMIUM AND CIPROFLOXACIN DURING UPTAKE AND ELIMINATION BY EARTHWORM
Land application of wastes can result in accumulation of metals and antimicrobials in terrestrial systems. Interaction between metals and antimicrobials may change their speciations in soil solution, thus affecting their bioaccumulation. Bioaccumulation must be considered as a time-dependent process under the dynamic influence of biological and geochemical factors. In the present study, earthworms were exposed to quartz sand percolated with solution containing cadmium (Cd) and ciprofloxacin (CIP). The accumulation and elimination kinetics of Cd and CIP were measured. Results showed that both Cd and CIP could be accumulated by earthworm. Cd had no significant effect on CIP accumulation and elimination. However, CIP facilitated the Cd accumulation. Without CIP, concentration of Cd in earthworm didnt change during the elimination phase. However, with CIP, Cd concentration in earthworm decreased significantly. Good relationship was found between the Cd and CIP concentrations in elimination phase (p<0.05), suggesting that Cd and CIP could be taken, stored and eliminated as Cd-CIP complex.
Wen B Huang R X Zhang S Z
Research Center for Eco-Environmental Sciences,Chinese Academy of Sciences,P.O. Box 2871,Beijing 100085,China
国际会议
北京
英文
1-4
2009-08-24（万方平台首次上网日期，不代表论文的发表时间）