Boron isotopes in precipitation: Experimental constraints and field evidence from French Guiana

Finally, our results show that (i) most of the dissolved boron in the coastal rivers of French Guiana originates from atmospheric inputs and (ii) the δ11B values of rivers are consistent with δ11B values of yearly averaged rainwater. We demonstrate in this study the potential use of boron isotopes as tracers of the biomass burning and stress the importance of investigating boron isotopes in biomass.