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Carbon monoxide concentrations were measured over an 8-day period (March 1997) in freshly fallen snow samples collected at Mount Sonnblick (Austria). Diurnal changes were systematically observed in the snow, with higher CO during daytime, indicating that light-dependent CO production processes...
The ozonolysis of propene has been investigated in a temperature controlled reaction chamber at 295, 260, and 230 K. Experiments were performed using a total zero air pressure of 760 Torr (STP) and propene/ozone reactant mixing ratios ranging from 2.3 to 23 ppmv. An analysis of FTIR spectra...
Eighteen soil samples from central Sudan were fractionated by dry sieving ina size fraction from <45 μm to >300 μm while aerosols generatedfrom these soils were fractionated in the particle size range from 0.25 μmto >16 μm. The elemental concentrations of soil samples were determinedby...
Ambient gas phase nitrous acid (HONO) has been measured by Tunable Diode Laser Absorption Spectroscopy with sub-ppbv detection limits. An R-branch line in the 1263.4 cm−1 ν3 band was found tobe free of interference and suitable for ambient HONO measurements. Nitrous acid was measured during the...
In this study, the results of four different field experiments concerning the speciation of iron and the concentrations of some other chemical compounds in cloudwater samples are compared to one-another. Hydrogen peroxide concentrations were higher during campaigns, conducted at sites not much...
Nutrient ecology and trace gas processing are intimately coupled in the surface ocean and participate in key linkages through the Earth biogeochemical system. We have added water column photochemistry for volatile sulfur and organic compounds to large scale nutrient cycle modules, in order to...
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