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Identifying fluorescent pulp mill effluent in the Gulf of Maine and its watershed

January 1, 2012

Using fluorescence spectroscopy and parallel factor analysis (PARAFAC) we characterized and modeled the fluorescence properties of dissolved organic matter (DOM) in samples from the Penobscot River, Androscoggin River, Penobscot Bay, and the Gulf of Maine (GoM). We analyzed excitation-emission matrices (EEMs) using an existing PARAFAC model (Cory and McKnight, 2005) and created a system-specific model with seven components (GoM PARAFAC). The GoM PARAFAC model contained six components similar to those in other PARAFAC models and one unique component with a spectrum similar to a residual found using the Cory and McKnight (2005) model. The unique component was abundant in samples from the Androscoggin River immediately downstream of a pulp mill effluent release site. The detection of a PARAFAC component associated with an anthropogenic source of DOM, such as pulp mill effluent, demonstrates the importance for rigorously analyzing PARAFAC residuals and developing system-specific models.

Citation Information

Publication Year 2012
Title Identifying fluorescent pulp mill effluent in the Gulf of Maine and its watershed
DOI 10.1016/j.marpolbul.2012.05.040
Authors Kaelin M. Cawley, Kenna D. Butler, George R. Aiken, Laurel G. Larsen, Thomas G. Huntington, Diane M. McKnight
Publication Type Article
Publication Subtype Journal Article
Series Title Marine Pollution Bulletin
Index ID 70189575
Record Source USGS Publications Warehouse
USGS Organization National Research Program - Central Branch