# is nitrogen gas a compound

Nitrogen dioxide » There are seven oxides of nitrogen that may be found in the ambient air. Nitrous oxide (N2O) is a greenhouse gas with significant anthropogenic sources contributing to its worldwide abundance (∼ 0.3 ppm). However, nitric oxide (NO) and nitrogen dioxide (NO2) are the two principal nitrogen oxides associated with combustion sources. Ambient concentrations of these two gases vary widely according to local sources and sinks, but can exceed a total concentration (NO + NO2) of 500 μg/m3 in dense urban areas. Nitrous acid (HONO) is a common pollutant in ambient and indoor environments, produced by the reaction of nitrogen dioxide with water. Ncbi.nlm.nih.gov

War! What is it good for? Mustard gas medicine » …chemical warfare agents, particularly mustard gas and the nitrogen mustards.… J Invest Dermatol 1972; 58:1–4. [PubMed] [Google Scholar]. 4. Sulzberger MB, Baer … Ncbi.nlm.nih.gov

Overview of Greenhouse Gases | US EPA » Information on emissions and removals of the main greenhouse gases to and from the atmosphere. Epa.gov

Exhaustive Conversion of Inorganic Nitrogen to Nitrogen Gas Based on a Photoelectro-Chlorine Cycle Reaction and a Highly Selective Nitrogen Gas Generation Cathode » A novel method for the exhaustive conversion of inorganic nitrogen to nitrogen gas is proposed in this paper. The key properties of the system design included an exhaustive photoelectrochemical cycle reaction in the presence of Cl–, in which Cl· generated from oxidation of Cl– by photoholes selectively converted NH4+ to nitrogen gas and some NO3– or NO2–. The NO3– or NO2– was finally reduced to nitrogen gas on a highly selective Pd–Cu-modified Ni foam (Pd–Cu/NF) cathode to achieve exhaustive conversion of inorganic nitrogen to nitrogen gas. The results indicated total nitrogen removal efficiencies of 30 mg L–1 inorganic nitrogen (NO3–, NH4+, NO3–/NH4+ = 1:1 and NO2–/NO3–/NH4+ = 1:1:1) in 90 min were 98.2%, 97.4%, 93.1%, and 98.4%, respectively, and the remaining nitrogen was completely removed by prolonging the reaction time. The rapid reduction of nitrate was ascribed to the capacitor characteristics of Pd–Cu/NF that promoted nitrate adsorption in the presence of an electric doub Pubs.acs.org

Accurate and Compatible Force Fields for Molecular Oxygen, Nitrogen, and Hydrogen to Simulate Gases, Electrolytes, and Heterogeneous Interfaces » Gas molecules and interfaces with liquids and solids play a critical role in living organisms, sorption, catalysis, and the environment. Monitoring adsorption and heterogeneous interfaces remains difficult in experiments, and earlier models for molecular simulations lead to errors over 100% in fundamental molecular properties. We introduce conceptually new force field parameters for molecular oxygen, nitrogen, and hydrogen that reduce deviations to <5%. We employ a combination of a harmonic bond stretching potential and Lennard-Jones parameters with 12-6 and 9-6 options, leading to computed bond lengths, Raman peaks, liquid densities, vaporization enthalpies, and free energies of hydration in impressive agreement with experiments. Reliable free energies of hydration were obtained upon validation of density and vaporization energy without significant further parameter adjustments. We illustrate applications to O2 adsorption on Pt electrocatalysts and N2 adsorption in zeolites, showing <5% deviation in adsorpti Pubs.acs.org

Enrichment and characterization of marine anammox bacteria associated with global nitrogen gas production - PubMed » Microbiological investigation of anaerobic ammonium oxidizing (anammox) bacteria has until now been restricted to wastewater species. The present study describes the enrichment and characterization of two marine Scalindua species, the anammox genus that dominates almost all natural habitats investig … Pubmed.ncbi.nlm.nih.gov

Characterization of important sulfur and nitrogen compounds in Lang baijiu by application of gas chromatography-olfactometry, flame photometric detection, nitrogen phosphorus detector and odor activity value - PubMed » The volatile compounds in three Lang baijiu ("Honghualangshi, Y1", "Langjiulangge, Y2", and "Laolangjiu, Y3") were identified by gas chromatography-olfactometry (GC-O), gas chromatography-mass spectrometry (GC-MS), flame photometric detection (FPD), and nitrogen phosphorus detector (NPD) with the ai … Pubmed.ncbi.nlm.nih.gov

Nitrogen » It is a diatomic nitrogen, a gas molecular entity and an elemental molecule.… Journal of Chemical Physics 1964;41:756-759. Crystal Structure Depiction. Crystal … Pubchem.ncbi.nlm.nih.gov