Problems in the fingerprints based polycyclic aromatic hydrocarbons source apportionment analysis and a practical solution
| Autor: | Lixia Wang, Yonghong Zou, Erik R. Christensen |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Pollution
Geologic Sediments Health Toxicology and Mutagenesis media_common.quotation_subject Mineralogy Coal combustion products Toxicology Combustion Rivers Apportionment Coal Polycyclic Aromatic Hydrocarbons media_common Principal Component Analysis Chemistry business.industry Sediment Bayes Theorem General Medicine Models Theoretical Aquatic environment Environmental chemistry Principal component analysis Illinois business Water Pollutants Chemical Environmental Monitoring |
| Zdroj: | Environmental Pollution. 205:394-402 |
| ISSN: | 0269-7491 |
| Popis: | This work intended to explain the challenges of the fingerprints based source apportionment method for polycyclic aromatic hydrocarbons (PAH) in the aquatic environment, and to illustrate a practical and robust solution. The PAH data detected in the sediment cores from the Illinois River provide the basis of this study. Principal component analysis (PCA) separates PAH compounds into two groups reflecting their possible airborne transport patterns; but it is not able to suggest specific sources. Not all positive matrix factorization (PMF) determined sources are distinguishable due to the variability of source fingerprints. However, they constitute useful suggestions for inputs for a Bayesian chemical mass balance (CMB) analysis. The Bayesian CMB analysis takes into account the measurement errors as well as the variations of source fingerprints, and provides a credible source apportionment. Major PAH sources for Illinois River sediments are traffic (35%), coke oven (24%), coal combustion (18%), and wood combustion (14%). |
| Databáze: | OpenAIRE |
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