CH4 flux measurements using static chambers.
Methane (CH4) flux was measured using static chambers, made out of polypropylene. Each chamber lid was fitted with a silicone rubber septum, which allowed repeated sampling of the headspace gas with a needle and syringe, both immediately after closure and then again 20 minutes after the initial sample was taken. Samples were stored in syringes that had 3-way stopcocks, and were analysed using a gas chromatographic flame ionization detector (GC FID). Samples were taken on a weekly (late spring to early autumn) to monthly basis (late autumn to early spring), starting in May 1997. This data was published in, 'Gauci, V., Dise, N., and Fowler, D. (2002). Controls on suppression of methane flux from a peat bog subjected to simulated acid rain sulfate deposition. Global Biogeochemical Cycles, Vol 16 No 1, 10.1029/2000GB001370'.