PCDD/F and PCB history in dated sediments of a rural lake.

@article{Isosaari2002PCDDFAP,
  title={PCDD/F and PCB history in dated sediments of a rural lake.},
  author={Pirjo Isosaari and Hannu Pajunen and Terttu Vartiainen},
  journal={Chemosphere},
  year={2002},
  volume={47 6},
  pages={575-83}
}
Concentrations of polychlorinated dibenzo-p-dioxins (PCDD), dibenzofurans (PCDF) and biphenyls (PCB) were analysed from a sediment core, which had been sampled from a remote lake in Finland. The deepest subsamples were analysed from a depth of 4.0 m, and were more than 8000 years old. At the surface of the sediment core, low levels of industrial background contamination were detected. The sum of 2,3,7,8-substituted PCDD/Fs was 35 ng/kg d.w. (dry weight), or 1.2 ng/kg d.w. in WHO's toxicity… CONTINUE READING