Assessment of Tentatively Identified Compounds in Superfund Samples

摘要

Stored mass spectral data for 27 semivolatile samples analyzed by 7 private laboratories under contract with the U.S. Environmental Protection Agency were reanalyzed at the Environmental Research Laboratory, Athens, GA (AERL). Results of the reanalysis were compared with the original contract laboratory data. In instances where specific compound identifications had been made by a contract laboratory, AERL identifications agreed 36% of the time, disagreed with the identification 11% of the time, disagreed on the presence of the GC peak 19% of the time, or concluded that data were insufficient for identification 34% of the time.