Results 201 to 210 of about 88,113 (258)

Electronic Structure and Geometry of NO2+ and NO2−

The Journal of Chemical Physics, 1969
The electronic structure of NO2+ and NO2− has been investigated as a function of angle by means of ab initio MO LCAO SCF wavefunctions. Atomic orbitals used in the basis set are close to free-atom Hartree–Fock solutions. Several excited states, in addition to the ground states, have been obtained for the two ions.
Gary V. Pfeiffer, Leland C. Allen
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An interfacial role for NO2

Nature Chemistry, 2021
Atmospheric chemists have been unable to explain the rapid sulfate formation observed during wintertime aerosol pollution events. Now, kinetic measurements in atmospherically relevant aerosol particles have highlighted a significant role for nitrogen dioxide in sulfate formation via its interfacial reaction with dissolved SO2.
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Indoor NO2 pollution and personal exposure to NO2 in two areas with different outdoor NO2 pollution

Environmental Monitoring and Assessment, 1986
Indoor NO2 concentrations were measured in the kitchen, the living room and bedroom of 612 houses in two different areas in the Netherlands. In a group of housewives living in these homes, personal exposure to NO2 was measured. NO2 concentrations indoors were dependent on the presence or absence of (un)vented gas appliances.
Fischer, P., Brunekreef, B., Boleij, J.S.M.   +2 more
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Roadside NO2/NOx and primary NO2 from individual vehicles

Atmospheric Environment, 2023
Traffic-derived nitrogen oxides (NOx) is a major component of kerbside pollution in large cities and represent an important source of exposure and health risk to urban populations, especially during the use of roadside pave-ments. The ratio of ambient NO2/NOx (xNO(2)) varies widely in urban environments, influenced by relative source strengths, but ...
Peter Brimblecombe, Mengyuan Chu, Chun-Ho Liu, Yunfei Fu, Peng Wei, Zhi Ning   +5 more
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The HMO treatment of the ONO2, NNO2 and CNO2 groups

Tetrahedron, 1967
Abstract Parameters have been chosen for the coulomb and resonance integrals for the HMO treatment of the ONO 2 , NNO 2 and CNO 2 groups, which correctly predict values of the dipole moments of nitric esters, nitramines and aromatic C-nitro compounds.
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The reaction kinetics of NO2

Toxicology, 1994
The chemistry of NO2. is reviewed. Experimental results from both the liquid and gas phase, and from both aqueous and non-aqueous systems, are used to gain insight into the basic chemistry of this radical.
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NO, NO2 and N2O

2002
The soil of forest ecosystems can function as both, a source and a sink for atmospheric N2O, NO, and even NO2 (e.g. Butterbach-Bahl et al. 1998; Papen and Butterbach-Bahl 1999; Gasche and Papen 1999). The fluxes of NO and N2O observed at the soil/atmosphere interface are the result of simultaneous dynamic production and consumption processes taking ...
Rainer Gasche, Hans Papen
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Postnatal tolerance to NO2 toxicity

Experimental and Molecular Pathology, 1982
Abstract Nursing neonatal rats (10 days old) are remarkably resistant to the cytotoxic effects of nitrogen dioxide (NO 2 ). They survive well when exposed continuousty to 50 ppm, exhibiting only minor injury of the proximal alveolar Type 1 cells. Moderate injury and loss of ciliated cells and moderate accumulation of alveolar edema are observed in ...
R J, Stephens, C, Tallent, C, Hart, D S, Negi   +3 more
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Validation of a diffusive sampler for NO2

Journal of Environmental Monitoring, 1999
A diffusive sampler for NO2, Willems badge, was validated in laboratory experiments and field tests. The collecting reagent for NO2 in the sampler is triethanolamine, and the analysis is based on a modified colorimetric method, the Saltzman method. The analysis was performed by a flow injection analysis (FIA) technique.
A, Hagenbjörk-Gustafsson, R, Lindahl, J O, Levin, D, Karlsson   +3 more
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Study of the anomalous NO2 symmetric stretch in p-NO2 aniline

Spectrochimica Acta Part A: Molecular Spectroscopy, 1982
Abstract The anomalous doublet corresponding to the NO2 symmetric stretch in p-NO2 aniline is studied by i.r. spectroscopy in 17 solvents and in the crystal. Deuteration of the amino group collapses the doublet and its nature is assigned to Fermi resonance and not to solute self-association.
José Fernández Bertrán, Miriam Hernández, Boris La Serna   +2 more
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