000200467 001__ 200467
000200467 005__ 20181203023542.0
000200467 0247_ $$2doi$$a10.1039/c3em00707c
000200467 02470 $$2ISI$$a000340081400009
000200467 037__ $$aARTICLE
000200467 245__ $$aNon-contact assessment of COD and turbidity concentrations in water using diffuse reflectance UV-Vis spectroscopy
000200467 269__ $$a2014
000200467 260__ $$aCambridge$$bRoyal Soc Chemistry$$c2014
000200467 300__ $$a6
000200467 336__ $$aJournal Articles
000200467 520__ $$aWater contamination is an important environmental concern underlining the need for reliable real-time information on contaminant concentrations in natural waters. Here, a new non-contact UV-Vis spectroscopic approach for monitoring contaminants in water, and especially wastewater, is proposed. Diffuse reflectance UV-Vis spectroscopy was applied to measure simultaneously the chemical oxygen demand (COD) and turbidity (TUR) concentrations in water. The measurements were carried out in the wavelength range from 200–1100 nm. The measured spectra were analysed using partial-least-squares (PLS) regression. The correlation coefficient between the measured and the reference concentrations of COD and TUR in the water samples were R2 = 0.85 and 0.96, respectively. These results highlight the potential of non-contact UV-Vis spectroscopy for the assessment of water contamination. A system built on the concept would be able to monitor wastewater pollution continuously, without the need for laborious sample collection and subsequent laboratory analysis. Furthermore, since no parts of the system are in contact with the wastewater stream the need for maintenance is minimised.
000200467 6531_ $$aWater contamination
000200467 6531_ $$aNon-contact measurement
000200467 6531_ $$aDistance spectroscopy
000200467 6531_ $$aWastewater
000200467 6531_ $$aTurbidity
000200467 6531_ $$aChemical oxygen demand
000200467 700__ $$0247413$$aAgustsson, Jon$$g223880
000200467 700__ $$aAkermann, Olivier
000200467 700__ $$0240314$$aBarry, David Andrew$$g169209
000200467 700__ $$0242873$$aRossi, Luca$$g103441
000200467 773__ $$j16$$k8$$q1897-1902$$tEnvironmental Sciences: Processes and Impacts
000200467 8564_ $$uhttp://pubs.rsc.org/en/Content/ArticleLanding/2014/EM/C3EM00707C#!divAbstract$$zURL
000200467 8564_ $$s695064$$uhttps://infoscience.epfl.ch/record/200467/files/c3em00707c.pdf$$yPublisher's version$$zPublisher's version
000200467 909C0 $$0252101$$pECOL$$xU11221
000200467 909CO $$ooai:infoscience.tind.io:200467$$particle$$pENAC
000200467 917Z8 $$x103441
000200467 917Z8 $$x169209
000200467 937__ $$aEPFL-ARTICLE-200467
000200467 973__ $$aEPFL$$rREVIEWED$$sPUBLISHED
000200467 980__ $$aARTICLE