降水中离子浓度与pH值的确定性相关关系研究

关于降水中离子浓度与pH值关系问题的研究多是基于降水化学数据的统计分析。从酸碱平衡理论出发 ,在电中性方程的基础上 ,建立了降水中离子浓度与pH值的确定性相关关系式。结果表明 ,该式具有普适性 ,是反映多种离子综合作用的重要参数。用公式对 50组降水化学数据做了计算分析 ,结果表明 ,降水离子浓度与 pH值的关系研究应考虑足够多的离子种类 ,降水化学数据也应满足 :( 1 )离子平衡值等于或接近 1 .0 ;( 2 )ΔC的正负号与 pH值范围的关系协调一致。可作为降水化学数据是否准确、合理的判据

Research on Relationship between Ion Concentrations and pH in Precipitation Based on Electric-charge Balance Equation

On the basis of electric-charge balance equation, a definite theoretical formula for describing the relationship between ion concentrations and pH values in precipitation is derived. In this paper, combined influence of ten kinds of ions under ion-balance condition is discussed. It has been showed that difference between the sum of all the cations concentrations and that of all the anions concentrations is a reasonable expression for relative concentrations of both ions, being an essential parameter for describing combined effects of various ions. 50 groups of precipitation sampling data were processed using the formula and several results were made with respect to the prerequisites for the research.