Department of Aquatic Biosciences, National Chiayi University, 300 University Rd., Chiayi 60004, Taiwan, ROC.
Bioresour Technol. 2011 May;102(9):5425-30. doi: 10.1016/j.biortech.2010.11.033. Epub 2010 Nov 13.
This study investigated the effects of light (visible light - 5800 lux, 24h) or dark regime and aerobic or anaerobic condition on the decay of added oxolinic acid (OA) at 5, 10 and 20 mg L(-1) in eel pond sediment. An asymptotic decaying exponential model C(t)=C(min)+C(o) × exp (-k × t) was used to facilitate quantitative approach to OA transformation, where C(t) is the concentration of OA after t days, C(min) the estimated level-off concentration of OA residue, C(o) the concentration of added OA and k the decaying coefficient. OA decayed faster under light (C(min)=4.6 mg L(-1)) than under dark (C(min)=7.8 mg L(-1)) and also decayed faster under aerobic (C(min)=4.0 mg L(-1)) than under anaerobic condition (C(min)=8.5 mg L(-1)). C(min) increased with C(o). Sundrying and tilling eel pond bottom should be able to reduce OA residue significantly.
本研究调查了光照（可见光 - 5800 勒克斯，24 小时）或黑暗条件以及需氧或厌氧条件对鳗鱼池塘沉积物中添加的氧氟沙星（OA）在 5、10 和 20mg/L(-1) 下衰减的影响。采用渐近衰减指数模型 C(t)=C(min)+C(o) × exp (-k × t) 来促进 OA 转化的定量方法，其中 C(t) 是 t 天后 OA 的浓度，C(min) 是估计的 OA 残留水平浓度，C(o) 是添加的 OA 浓度，k 是衰减系数。OA 在光照下（C(min)=4.6mg/L(-1))比在黑暗下（C(min)=7.8mg/L(-1))衰减更快，在需氧条件下（C(min)=4.0mg/L(-1))比在厌氧条件下（C(min)=8.5mg/L(-1))衰减更快。C(min)随 C(o)增加而增加。晒塘和翻耕鳗鱼池塘底部应该能够显著减少 OA 残留。
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