• 关键词：邻苯二甲酸二丁酯(DBP)  天然水体  生物降解  颗粒物效应

• 基金项目：国家自然科学基金

• 王宏
• 中国科学院生态环境研究中心,北京 100085

• 叶常明
• 中国科学院生态环境研究中心,北京 100085

• 摘要：主要研究了邻苯二甲酸二丁酯(DBP)在天然水体中的生物降解过程和颗粒物界面作用对生物降解的加速作用。根据均相和非均相水环境中DBP的生物降解模拟实验和理论推导,得出低浓度DBP的降解速率与颗粒物浓度可以近似用线性关系表示,并用效应因子表示颗粒物对生物降解速率的影响。

• Abstract：Biodegradation and suspended sediments interfacial effects of dibutyl phthalate(DBP)in natural waters were studied.According to the results of simulation experiments of DBPbiodegradation with different concentrations of suspended sediment, the relation betweenbiodegradation of trace DBP and suspended sediments was found to be experessed by linearequations. An interfacial effect factor was introduced to present the effect of suspended sedi-ments on biodegradation rates.

• Key words：dibutyl phthalate  water  biodegradation  interfacial effect

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