因子分析法在水质评价中的应用

因子分析法是主成分分析方法的推广和深化，用于研究样本中变量之间的相关关系，把原来的多个变量化为少数几个综合指标的一种多元分析方法。用该法对嘉陵江顺庆段水质进行评价，结果表明该水体受到了不同程度的有机物污染，其中NO-3-N、SS、BOD5和非离子氨所占的负荷最大，这为环境治理提供了科学的依据。

Application of Factor Analysis in Water Quality Evaluation

Factor analysis, an extension of principal component analysis, is mainly applied to study the relationship between variables in a sample. As a kind of multivariate analysis, the original multiple variables were transformed into a few comprehen- sive indexes in factor analysis. This method is applied to evaluate the water quality of Jialing River in Sunqing area. The results show that the water has different degrees of organic pollution with major pollutants of NO-3 - N, SS, BOD5 and non - ionic ammo- nia. This paper aims to provide scientific basis for environmental management.