再悬浮条件下沉积物内源磷迁移-转化机制研究进展

被引:27
作者
郑西来
张俊杰
陈蕾
机构
[1] 中国海洋大学海洋环境与生态教育部重点实验室
关键词
沉积物-水界面; 再悬浮; 扰动; 内源磷; 迁移-转化;
D O I
10.14042/j.cnki.32.1309.2013.02.010
中图分类号
X131.2 [水污染化学];
学科分类号
083001 ;
摘要
对沉积物再悬浮的驱动力及其耦合效应、再悬浮-内源磷迁移转化机制及主要影响因素进行了阐述,探讨了该领域未来可能的研究方向。相关研究发现,沉积物再悬浮的各种驱动力既可以单独作用也可相互耦合,其耦合效应具有显著的时空变异性;再悬浮使还原态沉积物暴露于有氧环境,沉积物中铁、锰的氧化以及沉积物颗粒的吸附促进了内源水溶态无机磷(SRP)的去除,而进入水体的内源有机磷则通过生物矿化和光化学分解转化为SRP;沉积物物化特征、水动力、水生生物以及水体理化性质等因素控制着再悬浮过程中内源磷的迁移和转化。指出再悬浮条件下沉积物内源磷迁移转化的多过程耦合效应、沉积物中磷形态的转化及其生物有效性、内源有机磷矿化与光化学分解机制及其调控因素将是本领域需要进一步研究的重点。
引用
收藏
页码:287 / 295
页数:9
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