九龙江口厦门海区表层沉积物中重金属人为增量的测定

对沉积物的研究已得出普遍的结论:人类活动排放到天然水体中的重金属污染物,通常以相当不稳定的化学形式—非晶格相存在于表层沉积物中,由于重金属在沉积物/水界面存在着大的浓度梯度,当水环境条件发生变化时,这些弱结合态的金属会再度释放进入水体引起水体的二次污染.     

MECHANISM OF PHOSPHORUS RELEASE FROM THE SEDIMENT-WATER INTERFACE IN XIAMEN BAY

The adsorption/desorption of phosphorus across the sediment -water interface is the main mechanism that controls the buffering capacity of DRP in coastal and estuarine water. Determination by three processes revealed that: 1) DRP flux from early diagenesis in surface sediment is F = 31.9ug/(m2.d ), which is only 1/1600 of the ammonia released; 2) at normal temperature and in the long term, the TDP released by adsorption /desorption across the sediment-water interface is a function of the major environmental factors; and 3) based on the determined SODR and assumed average water depth H(m) and residence time tR(d), the maximum flux of DRP can be estimated.     

厦门西海域磷的生物地球化学行为和环境容量

基于笔者近年来海域的现场观测和有关:(1)磷各种形态的含量;(2)不同形态之间的迁移、转化和贮藏;(3)再生、矿化的动力学过程的实验室模拟研究等方面的工作,得出的结果表明半封闭厦门港湾水体中磷的生物地球化学过程及其水环境容量,主要由悬浮颗粒物的吸附/解吸及生物碎屑的生物-化学分解过程所控制.提出了厦门港湾磷环境容量的模式.