Abstract The ca. 300 Ma Fengcheng Formation in the Junggar Basin of NW China is
reported to develop a rare alkaline lake (soda lake) in this study, based on an expanded …

Nitrogen is an essential nutrient for all life on Earth and it acts as a major control on
biological productivity in the modern ocean. Accurate reconstructions of the evolution of life …

Atmospheric ammonia (NH3) and ammonium (NH4+) can substantially influence air quality,
ecosystems, and climate. NH3 volatilization from fertilizers and wastes (v-NH3) has long …

The reduction of ammonia (NH3) emissions is urgently needed due to its role in aerosol
nucleation and growth causing haze formation during its conversion into ammonium (NH4+) …

Recent advances in stable isotope measurements now allow for detailed investigations of
the sources, transformations, and deposition of reactive nitrogen (N) species. Stable …

Groundwater nitrogen contamination is becoming increasingly serious worldwide, and
natural nitrogen attenuation processes such as anaerobic ammonium oxidation coupled to …

Reducing atmospheric ammonia (NH3) emissions is critical to mitigating poor air quality.
However, the contributions of major agricultural and non-agricultural source emissions to …

Nitrogen isotope compositions in sedimentary rocks (d 15 N sed) are routinely used for
reconstructing Cenozoic N-biogeochemical cycling and are also being increasingly applied …

RATIONALE Ammonia (NH3) emissions are a substantial source of nitrogen pollution to
sensitive terrestrial, aquatic, and marine ecosystems and dependable quantification of NH3 …

Accurate identification of nitrate (NO 3−) sources is critical to address the issue of
groundwater pollution. The nitrogen (N) isotopic enrichment factor (ɛ p/s) is an important …