克拉玛依市大气降水化学的统计学分析

运用相关分析、因子分析和聚类分析等统计学分析方法，对2009—2010年新疆克拉玛依市的大气降水化学组成和分布特征进行分析。结果表明，SO4^2-、Cl^-、Ca^2＋和Na^＋是降水中主要离子。降水的pH值、电导率、降水量和各离子组份均呈现明显的正偏态分布，降水样品以低离子含量的样本为主，因子分析和聚类分析2种分类方法分析降水中水溶性离子主要分为3类。SO4^2-、Cl^-、Mg^2＋、F^-主要来自人为活动的贡献，K^＋、Ca^2＋主要来源于土壤和沙尘等地壳，H^＋与其他阴、阳离子间并未表现出明显的相关关系，表明研究区域的降水酸度是所有致酸离子和各种离子综合作用的结果，而不是降水中某个单一的离子组份确定的。

Chemornetric Analysis of Atmospheric Precipitation of Xinjiang Karamay

The characteristics and distribution of precipitation chemistry of Karamay in the central region of xinjiang province during 2009 - 2010 was analyzed by statistical methods such as regression analysis, factor analysis and duster analysis to investigate. The results indicated SO4^2- ,Cl^- and Ca^2＋ and Na^＋ were the major ions in the precipitation. Skewness calculations for pH, EC and all the ions had showed a positive value that indicated a right asymmetric shape of the data distribution. Precipitation samples was low ionic in the sample of mainly, the precipitation of water soluble ion divided mainly into three categories using factor analysis and cluster analysis . SO4^2- , Cl^- ,Mg^2＋ . F^- mainly came from human activity, K^＋ ,Ca^2＋ mainly came from the soil and dust on the earth＇ s crust. H ＋ with other anion and cation had no distinct correlation. It was indicated that the precipitation＇ s acidity was all the ions comprehensive role as a result, instead of precipitation in a single set of the components.