Natural oxidation of black carbon in soils : Changes in molecular form and surface charge along a climosequence

  title={Natural oxidation of black carbon in soils : Changes in molecular form and surface charge along a climosequence},
  author={Chih-Hsin Cheng and Johannes Lehmann and Mark H Engelhard},
The aim of this work was to investigate changes in molecular form and surface charge of black carbon (BC) due to longterm natural oxidation and to examine how climatic and soil factors affect BC oxidation. Black C was collected from 11 historical charcoal blast furnace sites with a geographic distribution from Quebec, Canada, to Georgia, USA, and compared to BC that was newly produced (new BC) using rebuilt historical kilns. The results showed that the historical BC samples were substantially… CONTINUE READING
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