Sökning: "Johan Mellqvist"

Hittade 2 avhandlingar innehållade orden Johan Mellqvist.

1. 1. Application of dispersive UV-visible absorption spectroscopy for in-situ detection of gaseous pollutants in flue gases

   Författare :Johan Mellqvist; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; flue gas; nonlinearity; NO; NH_{3< sub>}; NO_{2< sub>}; SO_{2< sub>}; DOAS; temperature; in-situ;

   Sammanfattning : .... LÄS MER

3. 2. Application of Infrared and UV-Visible Remote Sensing Techniques for Studying the Stratosphere and for Estimating Antrophogenic Emissions

   Författare :Johan Mellqvist; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; stratospheric ozone; temperature dependence; non linearity; FTIR; VOC; flue gas; DOAS; long path FTIR; fugitive emissions;

   Sammanfattning : Infrared and UV/visible broadband absorption techniques have been used in three applications related to environmental research and atmospheric science. The techniques are based on measuring the attenuation of light by the atmosphere in the infrared and UV/visible region, and since a very large number of species absorb light in these wavelength regions, the techniques studied allow the measurement of several species simultaneously. LÄS MER