Now showing items 1-10 of 44
DETERMINATION OF C2-C5 HYDROCARBONS IN THE ATMOSPHERE AT LOW PARTS PER 109 TO HIGH PARTS PER 1012 LEVELS
By far the most abundant hydrocarbon in unpolluted air is methane (mixing ratio cu. 1.6 ppm). The mixing ratios of other hydrocarbons are typically in the low parts per lo9 (ppb) and parts per 10” (ppt) ranges. Although ...
Problems Conncted with the Analysis of Halocarbons and Hydrocarbons in the Non-Urban Armosphere
(Taylor & Francis, 1989)
Description and Intercomparison of Techniques to measure N and S compounds in the Western Atlantic Ocean Experiment
The data set of N and S compound measurements from WATOX-85 has been examined in detail to assess that data quality and suitability for use in addressing the goals of the Western Atlantic Ocean Experiment. Accuracy estimates ...
The * Molecular Orbitals of Perfluoroalkanes as Studied by Inner-Shell Electron Energy Loss and Electron Transmission Spectroscopies
(National Research Council Canada, 1988)
Absolute oscillator strength spectra in the C 1s (280–340 eV) and F 1s (680–740 eV) regions of the perfluoro-n-alkanes from C2 to C6 and perfluorocycloalkanes from C3 to C6 have been determined from inner-shell electron ...
Measurement of the Photodissociation Coefficient of NO2 in the Atmosphere: I. Method and Surface Measurements
(Springer Verlag, 1983)
The photodissociation coefficient of NO2, J NO 2, has been measured from a balloon platform in the stratosphere. Results from two balloon flights are reported. High Sun values of J NO 2 measured were 10.5±0.3 and 10.3±0.3×10-3 ...
Fluorination Effects on the Inner-Shell Spectra of Unsaturated Molecules
The applicability of the perfluoro effect to the X-ray spectra (300–800 eV) of unsaturated organic molecules is explored. The C1s and F1s (and Ols where appropriate) oscillator strength spectra of five fluoroethylenes, ...
Calculations of the Temperature Dependence of the NO2 Photodissociation Coefficient in the Atmosphere
(Springer Verlag, 1984)
The photodissociation coefficient, J NO2 of NO2 in the atmosphere was calculated at 235 and 298 K using the measured temperature dependences of the absorption cross-sections and quantum yields. These calculations gave a ...
Measurement of Gas Phase Hydrogen Peroxide in air by Tunable Diode Laser Absorption Spectroscopy
Tunable diode laser absorption spectroscopy has been applied to the determination of gas phase hydrogen peroxide in ambient air with sub-ppbv (parts per billion by volume) detection limits for measurement times of the order ...