Results 221 to 230 of about 43,444 (263)
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The photodissociation of SO2+·
International Journal of Mass Spectrometry and Ion Processes, 1985Abstract The first ion photodissociation study of SO2+· is reported. Unlike CH3I+· which photodissociates from the molecular ion ground state, SO2+· is observed to photopredissociate from the A and B states via the C and D states. The C ← B contribution to the low energy region is assigned and vibrational frequencies of 100, 46.5 and 55.5 meV are ...
S.P. Goss +2 more
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Atmospheric Environment (1967), 1978
Abstract SO2 concentration gradient measurements are reported, which have been carried out between May 1975 and September 1976 at the Kernforschungsanlage Julich. Most of the measurements were made with differential optical absorption spectroscopy. Mirrors at various heights (30, 80, 120m) on the meterological tower were used to reflect the light ...
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Abstract SO2 concentration gradient measurements are reported, which have been carried out between May 1975 and September 1976 at the Kernforschungsanlage Julich. Most of the measurements were made with differential optical absorption spectroscopy. Mirrors at various heights (30, 80, 120m) on the meterological tower were used to reflect the light ...
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Molecular beam photoionization study of SO2 and (SO2)2
The Journal of Chemical Physics, 1981Photoionization efficiency (PIE) data for SO2+ have been obtained with a wavelength resolution of 0.14 Å (FWHM) in the region 625–1005 Å using the molecular beam method. The ionization energy (IE) of SO2 was determined to be 12.348±0.002 eV (1004.08±0.20 Å).
J. Erickson, C. Y. Ng
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Ultraviolet Absorption of SO2: Dissociation Energies of SO2 and SO
The Journal of Chemical Physics, 1964The absorption intensities of SO2 were measured in the wavelength region 1849–3150 Å employing the hydrogen continuum as the source and at selected wavelengths utilizing the mercury line spectrum. The pressure dependence of the absorption intensity was investigated at 1849, 2537, and 3131 Å. The existence of an absorption continuum commencing at 2280 Å
P. Warneck, F. F. Marmo, J. O. Sullivan
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SO2+(C̃−X̃) fluorescence from Penning ionization of SO2
International Journal of Mass Spectrometry and Ion Physics, 1978Abstract In addition to SO(A 3 Π−X 3 Σ − ) and SO 2 (A 1 B 1 −X 1 A 1 ) emission, the C 2 B 2 ( v 1 ′, 0, 0)−X 2 A 1 ( v 1 ″, 0, 0) transition of SO 2 + fluorescence, which has its origin at 3376 ± 2 A, has been identified in the reaction of He(2 3 S ) with SO 2 . The symmetrical stretching vibrational frequencies of the X and C states of SO 2 +
M. Tsuji +3 more
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Precursor effects on SO2 oxidation
Atmospheric Environment (1967), 1978Abstract Smog chamber experiments were conducted to determine the relationships between SO 2 oxidation and the gaseous precursors common in polluted air: NO z , NMHC (a mixture of 17 hydrocarbons) and SO 2 . SO 2 oxidation to sulfate aerosols was first-order in SO 2 .
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Use of Air — SO2 Mixtures for Intercomparison of SO2 Monitors in the EEC
1987For an intercomparison programme among 29 continuous SO2 analysers in eight EC Member States, cylinders of air-SO2 mixtures were used as comparison standards. Two or three samples of two batches for each participating Member State were measured successively by the Central Laboratory (CL) of the JRC Ispra, calibrating with the TCM reference method, as ...
M. Payrissat, H. Rau, G. Serrini
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Practical Failure Analysis, 2002
Abstract Critical heat exchanger components are usually manufactured from durable steels, such as stainless steel, which exhibit good strength and corrosion resistance. Failure of a heat exchanger occurred due to specification of a plain carbon steel that did not survive service in the SO2 vapor environment.
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Abstract Critical heat exchanger components are usually manufactured from durable steels, such as stainless steel, which exhibit good strength and corrosion resistance. Failure of a heat exchanger occurred due to specification of a plain carbon steel that did not survive service in the SO2 vapor environment.
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Reduction of ferric iron by SO2 with heat or SO2 with activated carbon
1969In a liquid-liquid system for the separation and recovery of individual rare earths, co-extraction of ferric iron is a serious problem. This study was done to determine whether the problem could be solved by converting the iron to the ferrous state, as opposed to precipitating the ferric iron to remove it from solution.
B H Lucas, G M Ritcey
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