Comparative assessment of the global fate of α- and β-hexachlorocyclohexane before and after phase-out.

@article{Whrnschimmel2012ComparativeAO,
  title={Comparative assessment of the global fate of α- and β-hexachlorocyclohexane before and after phase-out.},
  author={Henry W{\"o}hrnschimmel and Pascal Tay and Harald von Waldow and Hayley Shi-Wen Hung and Yi-Fan Li and Matthew MacLeod and Konrad Hungerbuhler},
  journal={Environmental science & technology},
  year={2012},
  volume={46 4},
  pages={
          2047-54
        }
}
Technical hexachlorocyclohexane (HCH) was one of the most widely used pesticides during the 20th century. Although production and use were phased-out during the 1990s, two of its major components, α- and β-HCH, are still ubiquitous in the environment. Here, we have collected and analyzed data on concentrations of α- and β-HCH in the atmosphere and oceans, including spatial and temporal trends and seasonalities. We apply a global fate and transport model to both isomers over the period 1950 to… CONTINUE READING

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