恩诺沙星对雨生红球藻的生长抑制毒性测定

The growth inhibition toxicity of enrofloxacin to Haemafococcus pluvialis

以雨生红球藻Haemafococcus pluvialis为研究对象,测定了恩诺沙星对雨生红球藻的生长抑制毒性.结果表明:在25℃条件下,24 h时恩诺沙星对雨生红球藻的生长不产生抑制的最高质量浓度为50μg/mL,致使雨生红球藻完全死亡的最低质量浓度为180μg/mL.随时间的延长,雨生红球藻对恩诺沙星的耐受力增强.24、48 h时恩诺沙星对雨生红球藻的EC50分别为119.67和152.29μg/mL.在天然水体中恩诺沙星不会对雨生红球藻的生长造成直接的抑制毒性.

The growth inhibition toxicity of enrofloxacin to Haemafococcus pluvialis was studied at 25 ℃. The results showed that the maximum concentration of enrofloxacin that could not have inhibition to the growth of experimental alga was 50 μg/mL; the minimum concentration that caused all alga die was 180 μg/mL. The sensitivity of H. pluvialis to enrofloxacin decreased along with the time extension. The EC50 of enrofloxacin to H. pluvialis were 119.67 and 152.29 μg/mL at 24 and 48 h, respectively. Enrofloxacin didn＇t have growth inhibition toxicity to H. pluvialis in nature water.