研究论文
李祚泳.我国部分城市降水中离子浓度与pH值的关系研究[J].环境科学学报,1999,19(3):303-306
我国部分城市降水中离子浓度与pH值的关系研究
- Relation between ion concentration and pH in precipitation in number of Chinese cities
- 摘要：为了对酸雨的危害进行有效地控制,有必要研究降水中某些离子的浓度与降水pH值的关系。应用投影寻踪回归新技术,建立了以某些离子作因子的我国部分城市降水pH值的投影寻踪预测模型,并计算了各离子对降水pH值的权重贡献率。结果表明这些城市降水pH值不但受酸性离子[SO42-]和[NO3-]的影响,而且也强烈地受碱性离子[Ca2+]和[NH4+]的影响。
- Abstract：The relation between ion concentrations and pH in precipitations were investigated. The prediction model of pH acidity values in precipitations in a number of cities of China was studied using a new projection pursuit regression technique. The weighted contributions can be also calculated. The results suggest that the pH acidity values in precipitations of these cities are affected by not only acid ions SO42- and NO3- , but also alkaline ions Ca2+ and NH4+ intensely.
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