volume 41, issue 1, P168-176 2007
DOI: 10.1016/j.watres.2006.09.009
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Erik R. Christensen, Sidharta Arora

Abstract: Apportionment of sources of polycyclic aromatic hydrocarbons (PAHs) by a factor analysis model based on time records for seven sediment cores from central Lake Michigan is reconsidered to provide a more quantitative treatment, and one additional factor (source). The effect of mixing depth was observed on the unmixed fluxes, and a computer program was developed for estimation of the average PAH fluxes from the reconstructed PAH records. The new factor analysis model with nonnegative constraints includes not onl…

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