Figures & data
Table 1. Contribution of IPCC sectors anthropogenic emissions of N2O in Gg yr−1 in USA, OECD Europe, and China, subdivided by IPCC sectors (from EDGAR database, JRC/PBL, Citation2012)
Figure 1. N2O releases in air (t yr−1) in 2011 in Italy, and contribution (%) of each subactivity of IPCC sectors: 1 = Energy sector; 3 = Mineral industry; 4 = Chemical industry; 7 = Intensive livestock production and aquaculture. Data from E-PRTR.
Table 2. Characteristics of the cement plants analyzed
Table 3. Average concentration of punctual measurements of N2O, NOx, CO, and CO2 on a monthly basis, collected by inline instruments installed on plants, and NOx/N2O ratio
Figure 2. Profiles of N2O and NH3 (mg Nm−3) for plants with highest N2O/NOx ratio. (a) profile of plant E; (b) profile of plant F.
Table 4. Mean, minimum, and maximum concentrations of CO, CO2, and N2O obtained with NDIR and FTIR techniques and relative accuracy index (Iar)
Figure 3. Profiles of (a) CO (mg Nm−3) and (b) CO2 (% v/v) obtained in a simultaneous sampling campaign with FTIR- and NDIR-based instruments in plant G.
Figure 4. Profiles of N2O (mg Nm−3) obtained in a simultaneous sampling campaign in plant G with FTIR- and NDIR-based instruments: good accordance in trend.
Figure 5. Profiles of N2O (mg Nm−3) obtained in a simultaneous sampling campaign in plant C with FTIR- and NDIR-based instruments.
