Optical and molecular insights into dissolved organic matter release in soils induced by downward migration of biochar colloids

HIGHLIGHTS

• What: Little research focuses on the effect of biochar colloid transport on soil DOM leaching through combined optical EEM and molecular FT-ICRMS characterizations. The aims of this study were to identify the role of biochar colloid transport in the soil DOM leaching and_(2) evaluate the impact and mechanism of pristine and aged biochar colloids on the composition and properties of DOM leached from different soils. The study showed that the DOM components with higher aromaticity were released during the transport of biochar colloids (Fig 6), and these released DOM could not be metabolized by microbe . . .
  

   

  

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