Sources of nitrate in rivers draining sixteen watersheds in the northeastern U . S . : Isotopic constraints

Abstract

The feasibility of using nitrogen and oxygen isotope ratios of nitrate (NO3 ) for elucidating sources and transformations of riverine nitrate was evaluated in a comparative study of 16 watersheds in the northeastern U.S.A. Stream water was sampled repeatedly at the outlets of the watersheds between January and December 1999 for determining concentrations… (More)

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