Abstract
An environmental monitoring program was established to determine the impact of emissions from resource recovery facilities on the background of PCDDs and PCDFs. Fish, sediment, and soil samples were collected from areas surrounding five resource recovery facilities and one control site. Over 500 samples were analyzed to characterize the environmental levels before and after the resource recovery facilities initiated operations. All samples were analyzed for total tetra- through octahomologs and 2,3,7,8-substituted isomers. The resulting data base was investigated by multivariate statistical techniques (cluster analysis and principal component analysis—PCA) to determine the relationships of the residue levels between sample types and sample locations. The results of the effort demonstrate distinct differences between the sample matrices. The PCA provided a clear separation of patterns for fish versus soil and sediment. In addition, there were distinct groupings of patterns influenced by fish species.
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