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Determination of ni...
Determination of nitrate and other water quality parameters in groundwater from UV/Vis spectra employing partial least squares regression
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- Dahlén, Johan (author)
- Linköpings universitet,Tema vatten i natur och samhälle,Filosofiska fakulteten
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- Karlsson, Stefan (author)
- Linköpings universitet,Tema vatten i natur och samhälle,Filosofiska fakulteten
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- Bäckström, Mattias (author)
- Örebro universitet,Institutionen för naturvetenskap,Man-Technology-Environment Research Centre, Örebro University
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- Hagberg, Jessika (author)
- Örebro universitet,Institutionen för naturvetenskap,Man-Technology-Environment Research Centre, Örebro University
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- Pettersson, Håkan, 1956- (author)
- Linköpings universitet,Medicinsk radiofysik,Hälsouniversitetet
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(creator_code:org_t)
- Pergamon Press, 2000
- 2000
- English.
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In: Chemosphere. - : Pergamon Press. - 0045-6535 .- 1879-1298. ; 40:1, s. 71-77
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
Subject headings
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- The use of UV/Vis spectroscopy in combination with partial least squares (PLS) regression for the simultaneous prediction of nitrate and non-purgeable organic carbon (NPOC) in groundwaters was evaluated. A model of high quality was obtained using first order derivative spectra in the range 200–300 nm. Inclusion of non-UV-absorbing constituents in the modeling procedure, i.e., chloride, sulfate, fluoride, total carbon (TC), inorganic carbon (IC), alkalinity, pH and conductivity was also evaluated. This model seemed to be useful for prediction of chloride, TC, IC, alkalinity and conductivity, while its ability to predict sulfate, fluoride and pH was poor. In conclusion, application of PLS regression, which requires neither filtration of samples nor addition of chemicals, is a promising alternative for fast interpretation of geochemical patterns of groundwater quality.
Subject headings
- NATURVETENSKAP -- Kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences (hsv//eng)
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Miljövetenskap (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Environmental Sciences (hsv//eng)
Keyword
- Kemi
- Chemistry
- Enviromental Science
- Miljövetenskap
- Partial least squares; UV/Vis spectroscopy; Ground water quality; Geochemistry
- MEDICINE
Publication and Content Type
- ref (subject category)
- art (subject category)
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