Release process and dynamics of releasing oil pollutants from sediments were simulated.The changes of oil pollution concentration released from sediments at aqueous phase were discussed.The results showed that release process was a typical first-order process,which could be well characterized by a stagnant film model.The relationship between oil pollutant concentration in sediments and oil pollution concentration at aqueous phase was positive,which mean that the higher the pollution concentration,the higher the oil saturated concentration at aqueous phase,and the faster the release speed under the same release condition.%模拟水体沉积物中石油类物质向水相中释放的动力学过程,探讨在不同石油污染强度下,石油物质在水相中饱和浓度的变化。研究结果表明：上述过程可以用滞膜模型进行描述,释放过程为典型的一级动力学过程,沉积物中石油含量与水相中石油的释放浓度呈正向关系,在相同的释放条件下,污染强度越高,水相中石油的饱和浓度越高,释放速度也越快。
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