Nonlinearities in source receptor relationships for sulfur and nitrogen compounds

Article Abstract:

The likely magnitude of nonlinearities in the source-receptor relationship for sulfur and oxidized nitrogen and their causes were identified by examining the emission and deposition data for the UK. The dry deposition process was found to be strongly influenced by ambient concentrations of NH(sub 3) resulting in a substantial increase in deposition rate on decline of both SO(sub 2) concentrations and the ratio of SO(sub 2)/NH(sub 3) whereas during the period form 1987 to 2001, the concentrations and deposition of NO(sub 3) in precipitation have declined little following a reduction in emissions of 45 percent.

United Kingdom, All Other Basic Inorganic Chemical Manufacturing, Industrial inorganic chemicals, not elsewhere classified, Sulfur Compounds, Nitrogen Compounds, Sedimentation and deposition, Deposition (Geology), Sulphur compounds

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Projected stream water fluxes of N[O.sub.3] and total organic carbon from the Storgama headwater catchment, Norway, under climatic change and reduced acid deposition

Article Abstract:

Regression models for concentration and flux of NO3 and TOC are used with scenarios of climate and acid deposition to project changes in concentrations and fluxes. The decrease in NO3 fluxes in the Storgama headwater catchments in Norway is related to decreasing trends in N deposition whereas TOC fluxes are related to the decline in sulfur deposition.

Norway, Industrial Gas Manufacturing, Industrial gases, Nitrogen, Usage, Nitrogen (Chemical element), Watersheds, Regression analysis

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