Jouko Silvola , Pertti Martikainen, Hannu Nykänen

A mobile automatic gas chromatograph system to measure C02, CH4 and N2O fluxes from soil in the field

Silvola J., Martikainen P., Nykänen H. A mobile automatic gas chromatograph system to measure C02, CH4 and N2O fluxes from soil in the field.

Tiivistelmä

A caravan has been converted into a mobile laboratory for measuring fluxes of C02, CH4 and N2O from the soil in the field. The caravan is equipped with a gas chromatograph fitted with TC-, FI- and EC-detectors, and a PC controlled data logger. The gas collecting chambers can be used up to 50 m from the caravan. The closing and opening of the chambers, as well as the flows of sample gases from chambers to the gas chromatograph, is pneumatically regulated. Simultaneous recordings of temperature, light intensity and the depth of water table are made. The system has been used for two months in 1992, and some preliminary results are presented. Keywords: Automated measuring, carbon dioxide, methane, nitrous oxide, peatland

Avainsanat
peatland; Carbon dioxide; methane; Automated measuring; nitrous oxide

Vastaanotettu 31.10.2017 Julkaistu 1.1.1992

Katselukerrat 3140

Saatavilla http://suo.fi/article/9718 | Lataa PDF