Occurrence and Distribution of Two Hydroxylated Polychlorinated Biphenyl Congeners in Chicago Air.

ABSTRACT: We measured hydroxylated polychlorinated biphenyls (OH-PCBs) in both gas and particulate phases in 30 Chicago air samples, the first report of OH-PCBs in environmental air samples. Concentrations of 2OH-PCB2 and 6OH-PCB2 in both phases were similar to PCB2 measured in the same samples, from non-detect to 11 pgm^-3 and 12 ngg^-1 for the gas and particulate phases, respectively. We found that OH-PCB2s sorbed more to particulates than did PCB2; seasonal variability was larger than spatial variability across Chicago; and partial pressure and temperature strongly correlated with the two OH-PCBs (p<0.0001). Similar 6OH-PCB2:2OH-PCB2 ratios were found in our air samples and Aroclors, suggesting that Aroclors are a legacy source of OH-PCB2s to the atmosphere and appear to be vo

SUBMITTER: Awad AM 

PROVIDER: S-EPMC6148743 | biostudies-literature | 2016 Feb

REPOSITORIES: biostudies-literature