| 蛋白核小球藻与DEP的相互作用 |
| 摘要点击 1817 全文点击 1911 投稿时间：1994-04-01 |
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| 中文关键词 蛋白核小球藻 邻苯二甲酸二乙酯 藻类毒性 富集与降解 |
| 英文关键词 chlorella pyrenoidosa chick diethyl phthalate algal bioassay accumulation biodegradation |
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| 中文摘要 |
| 运用评价化学品对藻类毒性的标准实验方法,得出邻苯二甲酸二乙酯(DEP)抑制蛋白核小球藻生长的96h-EC50为80mg/L.实验结果表明,蛋白核小球藻对DEP有明显的富集与降解作用,富集量和浓缩系数(BCF)都在12h达到最大,分别为9.8mg/g和205。此后富集量随时间的延长而逐渐降低,96h降到1.8mg/g。BCF在72h内也随时间的延长而逐渐减小,并在72h降到最小80,72h以后又随时间的延长而升高,96h增加到91。蛋白核小球藻日平均降解7.3mg/L DEP,日平均降解率14.6%。用动力学方程(-de/dt=K N r)拟合降解过程,计算值与实测值的平均相对偏差为4.0%。 |
| 英文摘要 |
| The standard method of algal bioassay for evaluting toxicity of toxic chemicals was applied and the 96h—EC50 of diethyl phthalate (DEP)inhibitillg the growth of Chlorella pyrenoidosa was calculated as 80mg/L.It was found that C. pyrenoidosa was able to accumulate and biodegrade DEP.Accumulated amount of DEP and biological concentration factors(BCF)reached maximum values(9.83mg/g,205)at 12 h. As time went on afterward,accumulated amount declined gradually with time and reached a minimum value (1.8 mg/g)at 96 h,and BCF also decreased gradually with time before 72 h and reached minimum (80)at 72 h,but after 72 h,BCF increased gradually with time and reached 91 at 96 h. Average biodegraded amount of DEP per day was 7.3 mg/L and average biodegradation rate per day was 14.6%.If using kinetic equation of —dc/dt= K N T to fit the biodegradation process,the average relative deviation between calculated values and observed values was 4.0%. |
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