Chemometrics in assessment of seasonal variation of water quality in fresh water systems
- Chemometrics in assessment of seasonal variation of water quality in fresh water systems
- 카넬; Sushil R. Kanel; 이석헌; 이영수
- Water quality; Bagmati River; Factor analysis; Discriminant analysis; Seasonal variation
- Issue Date
- Environmental monitoring and assessment
- VOL 174, NO 1-4, 529-545
- The chemometric techniques were applied
for evaluation of the seasonal variation of
water qualities at 17 stations along a stretch of
the Bagmati river of Nepal for 23 water quality
parameters measured during 1999–2003. The
application of discriminant analysis confirmed
the classification of the water quality measurements
into three seasons: pre-monsoon, monsoon,
and post-monsoon affording 93.8% correct classification.
Factor analysis and box–whisker plots
facilitated to investigate the seasonal variation of
water quality and the pattern of pollution sources.
Application of FA revealed that the influence of water quality parameters changes from season to
season. A parameter that is most important in
contributing to water quality variation for one
season may not be important for another season.
Comparison of the discriminant analysis and factor
analysis helped to identify the most important
water quality parameters, as water temperature,
DO, EC, COD, CL, Ca, alkalinity, PO4P, and TP,
that are most important for seasonal variation and
play a significant role in establishment of water
quality control strategy.
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