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

Nitrate pollution in surface water has become an environmental problem of global concern.
The effective way for controlling the nitrate pollution of surface water is to identify the …

Nitrogen oxides (NO x, including NO and NO2) play an important role in the formation of
atmospheric particles. Thus, NO x emission reduction is critical for improving air quality …

Anthropogenic reactive nitrogen emissions have a significant impact on atmospheric
chemical composition and earth surface ecosystem. As one of the most important sinks of …

Abstract In China, nitrate (NO 3−) becomes the main contributor to fine particles (PM 2.5)
because the emissions of its precursor, nitrogen oxides (NO x), were not recognized and …

δ18O is widely used to track nitrate (NO3–) formation but overlooks NO3 radical reactions
with hydrocarbons (HCs), particularly in heavily emitting hazes. This study introduces high …

To constrain sources of anthropogenic nitrogen (N) deposition is critical for effective
reduction of reactive N emissions and better evaluation of N deposition effects. This study …

The rapid mass increase of atmospheric nitrate is a critical driving force for the occurrence of
fine-particle pollution (referred to as haze hereafter) in Bei**g. However, the exact …

In recent years, there are still huge amounts of NOx emissions in the Northeast, and this
inevitably increases the concentration of aerosol nitrate (NO 3−), which plays an important …

Nitrogen oxides (NOx) in the atmosphere directly affect air quality; however, their oxidation
products (eg, nitrate) are essential nutrients in terrestrial and marine ecosystems. To date …