摘要
通过对云贵高原湖泊沉积物一水界面铁、锰、硫体系的研究 ,揭示了湖泊铁、锰循环受氧化还原边界层、沉积物一水界面等多重界面的控制 ;湖水中硫酸盐的浓度制约着其扩散的物理过程 ,进而影响着硫酸盐还原作用 ;硫酸盐还原对铁、锰循环产生亚扩散层屏蔽效应 ;铁、锰循环伴随有微量金属元素的沉积后再迁移现象 ;沉积物一水界面为认识湖泊污染问题、有效地解决湖泊铁、锰的季节性污染等提供了科学依据。
Studies of the Fe, Mn and S systems at the sediment\|water interface of lakes on the Yunnan\|Guizhou plateau revealed that the Fe\|Mn cycle is controlled by redox boundary layer and sediment\|water interface and the concentrations of sulfate constrain its diffusion and affect sulfate reduction. Sulfate reduction has a screening effect on the Fe cycle and the Fe\|Mn cycle is accompanied with the removement of trace metals. Scientific evidence is developed for resolving reasonal pollution of lakes caused by Fe, Mn and S.\;
出处
《地质地球化学》
CSCD
北大核心
1999年第3期47-52,共6页
Geology-Geochemistry
关键词
湖泊
沉积物
水界面
铁
锰
硫体系
sediment\|water interface
Fe\|Mn cycle
sulfate reduction
