Assessment of water quality using multivariate statistical techniques: A case study of the Nakdong river basin, Korea

Title
Assessment of water quality using multivariate statistical techniques: A case study of the Nakdong river basin, Korea
Author(s)
이순화박성묵Kazama Futaba[Kazama Futaba]
Keywords
Principal component analysis; Water quality; Assessment of water qualities; Multivariate statistical techniques; Nakdong river basins; Cluster analysis
Issue Date
201409
Citation
Environmental Engineering Research, v.19, no.3, pp.197 - 203
Abstract
This study estimated spatial and seasonal variation of water quality to understand characteristics of Nakdong river basin, Korea. All together 11 parameters (discharge, water temperature, dissolved oxygen, 5-day biochemical oxygen demand, chemical oxygen demand, pH, suspended solids, electrical conductivity, total nitrogen, total phosphorus, and total organic carbon) at 22 different sites for the period of 2003-2011 were analyzed using multivariate statistical techniques (cluster analysis, principal component analysis and factor analysis). Hierarchical cluster analysis grouped whole river basin into three zones, i.e., relatively less polluted (LP), medium polluted (MP) and highly polluted (HP) based on similarity of water quality characteristics. The results of factor analysis/principal component analysis explained up to 83.0%, 81.7% and 82.7% of total variance in water quality data of LP, MP, and HP zones, respectively. The rotated components of PCA obtained from factor analysis indicate that the parameters responsible for water quality variations were mainly related to discharge and total pollution loads (non-point pollution source) in LP, MP and HP areas; organic and nutrient pollution in LP and HP zones; and temperature, DO and TN in LP zone. This study demonstrates the usefulness of multivariate statistical techniques for analysis and interpretation of multi-parameter, multi-location and multi-year data sets. ? 2014 Korean Society of Environmental Engineers.
URI
http://hdl.handle.net/YU.REPOSITORY/30781http://dx.doi.org/10.4491/eer.2014.008
ISSN
1226-1025
Appears in Collections:
공과대학 > 환경공학과 > Articles
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE