• 关键词：缓冲组分  缓冲强度  缓冲模型  数值解法

• 基金项目：

• 刘洪杰
• 华南师范大学地理系,广州

• 摘要：提出了一种反映水体pH变化的基本缓冲模型(微分方程型)。将不同类型天然水体的缓冲强度函数代入基本模型,即得到实际可用的各种具体缓冲模型。水体缓冲强度是pH的函数,可通过一种由热力学平衡关系和限定条件组成的多元方程组求出。缓冲模型没有解析解,但可应用微分方程的数值解法,通过计算机给出结果。

• Abstract：According to the principle of mass balance and buffer relations in waters, a fundamental buffer model on the variation of pH in waters was suggested, from which, the corresponding concrete buffer models for various waters could be derived by inputing the buffer intensities functions. A function of buffer intensity of a specific water was presented as multivariate equations consisting of thermodynamic equations and boundary conditions. The differential equations could be solved numerically with the help of a computer.

• Key words：buffer  buffer intensity  buffer model  numerical solution

• 
  摘要点击次数： 1693 全文下载次数： 2335