ASSESSMENT OF RIVER WATER QUALITY VIA ENVIRONMENTRIC MULTIVARIATE STATISTICAL TOOLS AND WATER QUALITY INDEX: A CASE STUDY OF NAKDONG RIVER BASIN, KOREA

作者：Venkatramanan Senapathi; Chung Sang Yong^*; Lee Seung Yeop; Park Namsik

来源：Carpathian Journal of Earth and Environmental Sciences, 2014, 9(2): 125-132.

• Correlation analysis
• Factor analysis (FA)
• Cluster analysis (CA)
• Water Quality Index (WQI)

Nakdong River Basin has been extensively studied to assess the overall water quality and to identify the major variables responsible for water quality variations in the basin. A total of 14 sampling points were selected in the riverine network of the River Basin during the year of 2011. Specifically, the temperature, pH, DO, BOD, COD, TP, TOC, TSS, NH4-N, NO3-N, PO4-P, Chl.alpha and Cl were investigated. Based on the WQI and NWQS, the river quality status for Nakdong River Basin falls under good to moderate class which indicate that, the water is suitable for industries and irrigation. Thus, they may not be suitable for recreational, water supply or fisheries purposes. Environmentric multivariate statistical tools of correlation matrix, factor analysis (FA) and cluster analysis (CA) revealed that the surface water quality was mainly controlled by anthropogenic activities. Therefore, the identification of the main pollution sources in the River Basin will help water authorities make better and more informed decisions on the improvement of Nakdong River water quality.

• 出版日期2014-5