Kowalkowski Tomasz, Zbytniewski Radosław, Szpejna Jacek, Buszewski Bogusław
Department of Environmental Chemistry and Ecoanalytics, Faculty of Chemistry, Nicholas Copernicus University, Gagarina 7, 87-100 Toruń, Poland.
Water Res. 2006 Feb;40(4):744-52. doi: 10.1016/j.watres.2005.11.042. Epub 2006 Jan 25.
The main aim of this work is focused on water quality classification of the Brda river (Poland) and evaluation of pollution data obtained by the monitoring measurement during the period 1994-2002. The study presents the application of selected chemometric techniques to the pollution monitoring dataset, namely, cluster analysis, principal component analysis, discriminant analysis and factor analysis. The obtained results allowed to determine natural clusters and groups of monitoring locations with similar pollution character and identify important discriminant variables. Chemometric analysis confirmed the classification of water purity of the Brda river made by the Inspection of Environmental Protection but the results showed more differentiation between monitored locations. This enables better evaluation of the water quality in a monitored region. On the basis of the chemometric approach, it was also found that some locations were under the high influence of municipal contamination, and some others under the influence of agriculture (discharges from fields) within the observed time period.
这项工作的主要目标集中在布日达河（波兰）的水质分类以及对1994年至2002年期间通过监测测量获得的污染数据的评估。该研究展示了选定的化学计量技术在污染监测数据集上的应用，即聚类分析、主成分分析、判别分析和因子分析。所得结果有助于确定具有相似污染特征的监测地点的自然聚类和组，并识别重要的判别变量。化学计量分析证实了环境保护检查对布日达河水质的分类，但结果显示监测地点之间的差异更大。这使得能够更好地评估监测区域内的水质。基于化学计量方法，还发现在观察期内，一些地点受城市污染影响较大，而其他一些地点受农业（农田排放）影响较大。
