Applications of fluorescence spectroscopy for predicting percent wastewater in an urban stream

Jami H. Goldman, Stewart A. Rounds, Joseph Needoba

Research output: Contribution to journalArticle

68 Citations (Scopus)

Abstract

Dissolved organic carbon (DOC) is a significant organic carbon reservoir in many ecosystems, and its characteristics and sources determine many aspects of ecosystem health and water quality. Fluorescence spectroscopy methods can quantify and characterize the subset of the DOC pool that can absorb and re-emit electromagnetic energy as fluorescence and thus provide a rapid technique for environmental monitoring of DOC in lakes and rivers. Using high resolution fluorescence techniques, we characterized DOC in the Tualatin River watershed near Portland, Oregon, and identified fluorescence parameters associated with effluent from two wastewater treatment plants and samples from sites within and outside the urban region. Using a variety of statistical approaches, we developed and validated a multivariate linear regression model to predict the amount of wastewater in the river as a function of the relative abundance of specific fluorescence excitation/emission pairs. The model was tested with independent data and predicts the percentage of wastewater in a sample within 80% confidence. Model results can be used to develop in situ instrumentation, inform monitoring programs, and develop additional water quality indicators for aquatic systems.

Original languageEnglish (US)
Pages (from-to)4374-4381
Number of pages8
JournalEnvironmental Science and Technology
Volume46
Issue number8
DOIs
StatePublished - Apr 17 2012

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fluorescence spectroscopy
Fluorescence spectroscopy
Organic carbon
dissolved organic carbon
Wastewater
fluorescence
wastewater
Fluorescence
Rivers
Ecosystems
river
Water quality
water quality
urban region
ecosystem health
environmental monitoring
Monitoring
instrumentation
relative abundance
Watersheds

ASJC Scopus subject areas

  • Chemistry(all)
  • Environmental Chemistry

Cite this

Applications of fluorescence spectroscopy for predicting percent wastewater in an urban stream. / Goldman, Jami H.; Rounds, Stewart A.; Needoba, Joseph.

In: Environmental Science and Technology, Vol. 46, No. 8, 17.04.2012, p. 4374-4381.

Research output: Contribution to journalArticle

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