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PCB Method Comparison of High and Low Resolution Sediment Analysis

Publication number Date Published
14-03-009March 2014
VIEW NOW PCB Method Comparison of High and Low Resolution Sediment Analysis (Number of pages: 72) (Publication Size: 1031KB)

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Author(s) Coots, R.
Description In Washington State, the sediment management community has used Aroclor analysis for PCB screening assessments. Aroclor analysis can be problematic due to limitations. Newer high resolution methods provide congener detail allowing human health assessment. A more informative method for screening surveys is needed to replace Aroclor analysis.

There are three general types of sediment analyses for PCBs: (1) congeners, (2) homologs, and (3) Aroclors. A total of 10 sediment samples were split three ways and analyzed by congeners, homologs, and Aroclors. Results were compared, emphasizing the congeners to homolog methods.

Total PCBs by congeners compared to homologs were highly correlated. Total PCB Aroclors were also compared to congeners; a weaker yet still strong relationship was reported.
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Keywords methods, sediment, PCBs

Quality Assurance Project Plan: PCB Method Comparison of High Resolution and Homolog Analysis