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| Online Evaluation of Water Quality by Mid-infrared Spectroscopy in River Network Areas of Suzhou City |
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Ligang Fang,
Jinxiang Li,
Zhaobin Liu,
Changbo Tang and Zhu Liang |
Abstract:
Fifty typical stations were selected to measure mid-infrared
spectroscopy in the river network areas of Suzhou city, on November 23, 2009
and five water quality parameters were analyzed for every measured station,
including Total Phosphorous (TP), Total Nitrogen (TN), K, Mg and Cu. The correlations
between the water quality parameters and spectral reflectance were analyzed.
The single band, multiple linear regression and synergy interval partial least
squares (SiPLS) models were built based on reflectance. The results show that,
for TN and TP, the SiPLS models have the smallest RMSE and TN and TP can be
detected efficiently by in situ mid-infrared spectral analysis (r>0.76).
For the prediction of K, Mg, the results indicate that the optimal method is
with the single band models of the reflectance and the concentration derived
from the single band models are strongly correlated with the measured concentration
(r>0.79). The study indicated that the water quality parameters can be monitored
by mid-infrared spectroscopy technology, which would provide the water supply
and conservancy authorities with referenced spatial information to manage water
resources.
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How to cite this article:
Ligang Fang, Jinxiang Li, Zhaobin Liu, Changbo Tang and Zhu Liang, 2013. Online Evaluation of Water Quality by Mid-infrared Spectroscopy in River Network Areas of Suzhou City. Journal of Applied Sciences, 13: 1767-1773.
DOI: 10.3923/jas.2013.1767.1773
URL: https://scialert.net/abstract/?doi=jas.2013.1767.1773
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