| Title |
Evaluation of Water Quality Characteristic Using Factor Analysis in the Nakdong River |
| Authors |
박해식(Hae Sik Park),박청길(Chung Kil Park),송미경(Mi Koung Song),백경훈(Kyung Hoon Baek),신성교(Sung Kyo Shin) |
| Abstract |
The study was conducted to evaluate water quality utilizing factor analysis in the Nakdong River. The relationships between BOD concentration and flow rate, weighted BOD concentration which it was considered BOD load and flow rate, show that water quality in the lower stream is affected by flow rate, especially, in winter and spring. The three factors derived from the factor analysis explained 75.0% of the variability within the data. Factor I (44.0%) was artificial pollution pattern by domestic sewage and industrial wastewater. Factor II (19.2%) was metabolism pattern. Factor III (11.75%) was hydrological variation pattern. The upper stream was influenced of hydrological factor and the water clarity in the middle stream was related to artificial pollution. The lower stream including Mulgum was strongly affected by the metabolised factor. |