Nitrate (NO3−) contamination of surface-and groundwater is an environmental problem in
many regions of the world with intensive agriculture and high population densities …

Interest in perchlorate as environmental pollutant has increased since 1997, when high
concentrations have been found in the waters of the Colorado River, USA. Perchlorate is …

We report a new method for measurement of the isotopic composition of nitrate (NO3-) at the
natural-abundance level in both seawater and freshwater. The method is based on the …

We report a novel method for measurement of the oxygen isotopic composition (18O/16O) of
nitrate (NO3-) from both seawater and freshwater. The denitrifier method, based on the …

Nitrate (NO3−) concentrations in public water supplies have risen above acceptable levels
in many areas of the world, largely as a result of overuse of fertilizers and contamination by …

We compiled new and published data on the natural abundance N isotope composition
(δ15N values) of soil and plant organic matter from around the world. Across a broad range …

La agricultura tiene efectos directos e indirectos en las tasas y composiciones de la recarga
y de la biogeoquímica de las aguas subterráneas. Entre los primeros, cabe citar la …

A detailed isotopic characterization (δ15NNtotal, δ15NNO3, δ18ONO3, δ34SSO4,
δ18OSO4, δ13CCtotal, and 87Sr/86Sr) of 27 commercial fertilizers used in Spain is …

Despite a rapidly growing literature on analytical methods and field applications of O isotope‐
ratio measurements of NO3− in environmental studies, there is evidence that the reported …

The Atacama along the Pacific Coast of Chile and Peru is one of the driest and possibly
oldest deserts in the world. It represents an extreme habitat for life on Earth and is an analog …