【摘要】 <正> 海洋中的二氧化碳-碳酸盐体系是重要而复杂的平衡体系。它对于大气一海洋界面以及海水的化学和海洋沉积物的沉积过程起着重要的作用,计有如下一些平衡关系:更多还原

【Abstract】 The system of CO₂ and degree of saturation of CaCO₃ have been calculated from measurements of pH and alkalinity in the northeast region of the South China Sea. Concentration of total CO₂, HCO₃^- and CO₃^2- are 1.86—2.49mM/l, 1.60—2.38 mM/l and 0.07—0.28 mM/l respectively. According to concentration of CO₃^2- and Edmond and Gieskes’ （1970） K’_sp and △ of calcite and aragonite in sea water, the degrees of saturation of calcite and aragonite havebeen calculated. Location of the saturation horizon for calcite and aragonite are found to occur in the range of 600—1300 meters and 330—430 meters respectively.更多还原