Nitrates monitoring by UV–vis spectral analysis

Autor: Steve Pontvianne, Benoît Pollier, Aziz Assaad, Marie-Noëlle Pons, François Guérold, Philippe Wagner, Chafatayne Oucacha, Arnaud Legout
Přispěvatelé: Laboratoire Réactions et Génie des Procédés (LRGP), Centre National de la Recherche Scientifique (CNRS)-Université de Lorraine (UL), Zone Atelier du Bassin de la Moselle [LTSER France] (ZAM), Université de Lorraine (UL)-Centre National de la Recherche Scientifique (CNRS), Unité de recherche Biogéochimie des Ecosystèmes Forestiers (BEF), Institut National de la Recherche Agronomique (INRA), Laboratoire Interdisciplinaire des Environnements Continentaux (LIEC), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Terre et Environnement de Lorraine (OTELo), Institut national des sciences de l'Univers (INSU - CNRS)-Université de Lorraine (UL)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Lorraine (UL)-Centre National de la Recherche Scientifique (CNRS)-Institut Ecologie et Environnement (INEE), Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS), LTER-ZAM, the Region Lorraine, Conseil Departemental des Vosges, Parc Naturel Regional des Ballons des Vosges, LTER, Zone Atelier du Bassin de la Moselle
Jazyk: angličtina
Rok vydání: 2017
Předmět:
ultraviolet radiation
Second derivative
0208 environmental biotechnology
Ion chromatography
02 engineering and technology
STREAMS
010501 environmental sciences
Aquatic Science
01 natural sciences
Oligotrophic
spectroscopie
moselle
chemistry.chemical_compound
Nitrate
nitrate
[CHIM.ANAL]Chemical Sciences/Analytical chemistry
[SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry
Tributary
ultraviolet
Spectroscopy
Nitrites
0105 earth and related environmental sciences
Hydrology
geography
geography.geographical_feature_category
Nitrates
Thermal conductivity detector
pollution des rivières
sweet water
6. Clean water
UV–vis spectroscopy
020801 environmental engineering
eau douce
chemistry
Environmental chemistry
Environmental science
[SDE.BE]Environmental Sciences/Biodiversity and Ecology
Eutrophication
Zdroj: Ecohydrology and Hydrobiology
Ecohydrology and Hydrobiology, Elsevier, 2017, 17 (1), pp.46-52. ⟨10.1016/j.ecohyd.2016.12.001⟩
ISSN: 1642-3593
Popis: International audience; The monitoring of nitrates using the second derivative of UV–vis spectra has been tested for a large set of samples (≈900) covering a large range of freshwater environments in the Moselle River drainage basin (headwater streams in the Vosges Mountains; tributaries, including the Madon River and Vologne River; and waters of various origins exposed to anthropogenic activities in villages). Satisfactory linear correlations (coefficient of determination > 0.74) were obtained between nitrate concentrations (measured by ion chromatography with a conductivity detector) and the maxima of the second derivative in the UV range for sets of mesotrophic and eutrophic samples. The meaningfulness of the linear regressions was verified by applying a Fisher-Snedecor test using a level of confidence of 0.05. The quality of the correlation decreased when the samples came from oligotrophic environments due to the limited sensitivity of the ion chromatography technique. UV–vis spectroscopy combined with the second derivative method appears to be a good alternative for monitoring nitrate-related eutrophication in the laboratory as well as in situ using submersible spectrophotometers.
Databáze: OpenAIRE
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