Open AccessDetermining Gas Sampling Timelines for Estimating Emissions in Small Chamber Incubation Experiments
Author(s) -
Dai Huong Nguyen,
Peter Grace,
Clemens Scheer,
David Rowlings
Publication year - 2014
Publication title -
iosr journal of engineering
Language(s) - English
Resource type - Journals
eISSN - 2278-8719
pISSN - 2250-3021
DOI - 10.9790/3021-04241416
Subject(s) - greenhouse gas , incubation , environmental science , sampling (signal processing) , timeline , incubation period , closing (real estate) , zoology , chemistry , mathematics , statistics , biology , physics , ecology , detector , law , political science , optics , biochemistry
A laboratory experiment was set up in small chambers for monitoring greenhouse gas emissions and determining the most suitable time for sampling. A six-treatment experiment was conducted, including a one week pre-incubation and a week for incubation. Timelines for sampling were 1, 2, 3, 6 and 24 hours after closing the lid of the incubation chambers. Variation in greenhouse gas fluxes was high due to the time of sampling. The rates of gas emissions increased in first three hours and decreased afterward. The rates of greenhouse gas emissions at 3 hours after closing lids was close to the mean for the 24-h period